How much postage for 3 oz letter

Letters (Metered): Metered letters are prepaid mail that doesn't require postage stamps; they're marked using an electrical machine in the post office. Down below is a table of the weight and prices of shipping mattered letters: Weight being (under ) Price. 1 (oz.) $0.64. 2 (oz) $0.88.

Letters may involve disks, magnetic tapes, or any storage device enclosed in an envelope fit for First-Class mail. The following are the postage rates for letters sent via First-Class mail. Letters – 1 oz. (Stamped) $0.60; Letters – 1 oz. (Metered) $0.57; Letters – Additional Ounces (Stamped) $0.24; Letters – Additional Ounces (Metered ...Subsequently, question is, how much does it cost to mail a 2.6 oz letter? USPS Rate Changes 2020 . Letters 2019 Rates 2020 Rates; First-Class Mail letter (1 oz.) $0.50: $0.50: First-Class Mail letter - each additional ounce: ... Postage; 3 ounces ($0.85) One Domestic Forever stamp, and two 15¢ Additional Ounce stamps ($0.85) Or you can overpay ...As of April 2023, the cost of the non-machinable surcharge is 40 cents. So if you are sending out a letter that weighs one ounce, USPS will require $1.03 (it’s the 63 cent postage rate for a 1 ounce letter plus the 40 cents for the non-machinable surcharge). Note that although postage rates are increasing in July, 2023, the nonmachinable …3 oz. $1.87-One regular Forever Stamp + 5 Additional Ounce Stamps (results in $0.01 ... for calculating postage for letters/envelopes it became MUCH more difficult to use. For example, every person using the calculator sees two checkbox option about shipping live animals or day-old poultry. I wonder how many people that message applies to? ...The postage for the 2-ounce letter is now 78 cents ($0.78). While the forever stamp costs $0.58. Please Note: The letter rates depend upon the size of the envelope as well, these rates are for business envelopes that are mainly 6-1/8″ in height and 11.5″ in length. Standard envelopes ( manila envelopes) are placed in the category of large ...$1.55 for a 1 oz letter or postcard: 7-21 business days: Yes: United Kingdom: International Standard: £1.70 for a letter up to 20g: 3-5 working days: Yes: Canada: International Letter-post: $3.19 CAD for a 30g letter: ... So, how much postage should you mail a letter to Germany? Let's say you're mailing a postcard or international mail ...

Retail Postage Price Calculator Retail Calculator Video Library. ... What is the weight of your mail piece? Pounds. Ounces. Please select from the following options. View Dimensions. Letter. Large Envelope. Package. ... Property Minimum Maximum; Length: 5 inches: 11-1/2 inches: Height: 3-1/2 inches: 6-1/8 inches: Thickness: 0.007 inch: 1/4 inch ...Oct 20, 2022 · How much postage is needed to send a first class letter to Canada? Doesn't matter the month or year, as the current rates are 85 cents for the first ounce, $1.17 for a two ounce letter and $1.49 ... The $0.55 stamp entitles you to send a single ounce of mail through the postal system. Now, the overwhelming majority of postal officers, workers, and even postmasters aren’t going to lose their mind if you’re stamped envelope comes in weighing at 1.3 ounces or so.Some restrictions apply. For additional information, visit the Postage Calculator. Back ^ 5. In most cases, the expected delivery date that is printed on your receipt or provided at checkout will reflect a delivery time of 1, 2, or 3 days based on origin, destination, and Post Office ™ acceptance time. Exceptions and restrictions apply.Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.68¢ Letter 1-oz (56) 85¢ Semipostal (4) 92¢ First-Class 2-oz (2) $1.12 Non-Machineable (1) $1.16 First-Class 3-oz (1) Show More. Issue Year ... Additional Postage 3¢ | Multiple Formats. $90.00 - $300.00 Pears Stamps. Additional Postage 10¢ $2.00 Grapes Stamps. Additional Postage 5¢ $1.00 ...How much postage for 2.2 oz letter? The about of postage you need for a 2.2 oz. letter in the United States is $.70. This is for a standard envelope.

25 mm. 1.0 in. Weight. 750 g. 10.5 oz. Envelopes of C4 size can be posted under the large letter postage rate, however a C3 envelope would be too large. US envelopes of the following sizes are covered by the UK's large letter …The cost of a Canadian stamp for postage within Canada is $1.07 for a postage stamp for sending a standard-size letter mail of up to 30 grams or up to 5 paper sheets. If you purchase stamps in a coil or booklet, the price drops to $0.92 per stamp. This postal rate is for all standard-size mail items that are shipped within Canada.How much to mail a 3.7 oz letter? Updated: 9/20/2023. Wiki User. ∙ 11y ago. Best Answer. That depends where you are posting it and how much it costs to post.The postage rate for First Class Mail is 45 cents for a standard 1 ounce letter within the United States. ... How much postage for a 3.6 oz? What do you mean by mis-handled baggage? Up to $100 insurance included 3; you can buy additional insurance coverage up to $5,000. Priority Mail®. You're sending important items that need to arrive in 1-3 business days. 4. Flat Rate Envelope: From $9.85. USPS Mailing Box (Flat Rate): From $10.40. Your Own Box By Weight/Zone: From $9.25. 1-3 business days 4. Calculate the postage required for your letter or parcel using Find a Rate. Pay for and print postage with Ship Online. Look up U.S. postal rates. Look up the postal website of your originating country. Learn the postage you need for a letter or parcel depending on its weight, size and destination.

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Letters up to 3 ounces will run you $0.78 in postage. Finally, you can send a letter up to 3.5 ounces for $0.95. Send a letter that weighs more than 3.5 ounces and your postage rates bump up considerably. USPS will charge flat-size prices (or even parcel prices) for letter-size mail that exceed 3.5 ounces in weight. A 4 ounce flat envelope runs ... Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.The postage rate of large envelopes (also known as flat mail) starts at $1.00 in 2020 and goes up in 20 cents intervals based on weight. For example, a "flat" that weighs 1.05 ounces will require $1.20 cents to mail. The same "non-machinable" rule described above (in the standard letter section) does not apply here.The most important factor is knowing the current first-class mail rate. As of 2022, the postage for a standard 1 ounce letter is $0.60. This means any single envelope weighing 1 ounce or less can be mailed with just one forever first-class stamp. These special stamps allow you to lock in the current 1 ounce rate regardless of future price ...Requires Ground Transportation. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size.You can mail a first-class letter up to 3.5 ounces — costing $2.08 —before flat-rate charges apply. Sending a standard-sized postcard costs $1.15. ... For a first-class letter to Canada, the first ounce of postage costs 85 cents, a two-ounce letter costs $1.17 and a three-ounce letter costs $1.49, as of the time of publication. ...

6 ounces ($2.46) One Global Forever stamp, one Domestic Forever stamp, two 10¢ stamps, one 2¢ stamp, and one 1¢ stamp ($2.46) Or you can overpay by $0.64 using two Global Forever stamps ($3.10) Stamp combinations for sending letters from the United States to Postage to Guam | How to Send a Letter to Guam.Send 1 oz. letters or postcards around the world with one Global Forever ® stamp, which currently costs $1.55 and never expires, even if the postage price goes up. For large envelopes (flats) up to 15.994 oz., postage prices vary based on weight and destination, starting from $3.00. Buy International Stamps Learn More.Method 1. Using a Postage Calculator. Download Article. 1. Use a Forever stamp for most standard mail items. A single Forever …Some restrictions apply. For additional information, visit the Postage Calculator. Back ^ 5. In most cases, the expected delivery date that is printed on your receipt or provided at checkout will reflect a delivery time of 1, 2, or 3 days based on origin, destination, and Post Office ™ acceptance time. Exceptions and restrictions apply.Jan 22, 2012 · First Class letter (1 oz): 68¢ First Class letter (2 oz): 92¢ First Class letter (3 oz): 1.16¢ First Class large envelope (flats) - 1 oz: $1.39 First Class large envelope (flats) - 2 oz: $1.63 First Class large envelope (flats) - 3 oz: $1.87 International postcard or letter (1 oz): $1.55 Priority Mail (Flat rate envelope): $9.85 Send 1 oz. letters or postcards around the world with one Global Forever ® stamp, which currently costs $1.55 and never expires, even if the postage price goes up. For large envelopes (flats) up to 15.994 oz., postage prices vary based on weight and destination, starting from $3.00. Buy International Stamps Learn More.How Much Is USPS Postage per Ounce? The cost of USPS postage per ounce (oz) varies depending on your chosen service. For instance, domestic First-Class Mail costs $0.66 for a 1-oz letter, while a 1-oz large envelope costs $1.35. ... For example, if you’re sending a 3-oz letter through First-Class Mail, expect to pay $1.14 ($0.66 + $0.24 …If it doesn't, the shipment may be returned to you, or the buyer may receive the item with postage due. No smaller than 3.5" x 5" No larger than 6.125" x 11.5" Envelope thickness is uniform, less than 0.25" inches at all points, and not too rigid; Weighs up to 3 oz. Envelope contains NO clasps/strings/buttons or similar closure devicesHow much postage needed for 3.8 ounce letter? Domestic postage is $1.39 for an ordinary envelope of uniform thickness. How much postage is needed to mail a letter to canada?If favorably reviewed by the PRC, the new prices will include no increase in the price of a First-Class Mail Forever stamp, which would remain at 55 cents. The single-piece letter additional ounce price would remain at 15 cents. Also unchanged would be the prices of postcard stamps at 35 cents, and 1-ounce flats at $1.

According to the latest postage price, an additional ounce stamp remains $0.24, much cheaper than a forever stamp ($0.66). ... For example, if you send a one-ounce stamp (66 cents), you'll need 3 additional ounce stamps to cover one ounce of the letter ($0.24*3=$0.72). This means that when you want to send, you need to buy an additional ounce ...

The easiest way to send letters from the USA to China is with Global Forever Stamps for $1.55 each. You can also use regular, domestic forever stamps as long as they add up to $1.55. Extra postage is required over 1 ounce. Here's the first class postage you'll need to send letters to China, which is part of "group 3" in the USPS …A letter weighing 3.5 ounces - 1 Domestic Forever Stamp, 1 Postcard Stamp, and one 10-cent stamp costs $1.08. Note: Once your envelope exceeds the 3.5-ounce weight limit, you will need to look at rates for "flats," which are large envelopes for mailings from 3.5-13 ounces. We will discuss postage rates for flats, other requirements, and ...Question: not qualify for these ratesa. How much does it cost to send a 3.1 -ounce letter?The cost is (Round to the nearest cent as needed)b. Write a piecewise-defined function C (x) for the postage charged for a letter weighing x ounces.One Price Up to 3.5 Ounces. Pay one price for up to 3.5 oz for First-Class Mail presort and automation compatible letters and cards. This is a cost-effective way for businesses to include promotional messages with bills, invoices, and statements. The one price for up to 3.5 oz rate is not a blended rate and does not apply First-Class Mail ...How Much does Priority Mail Express® Cost? - USPSA new line of postage stamps will feature villains from Disney movies By clicking "TRY IT", I agree to receive newsletters and promotions from Money and its partners. I agree to Mo...68¢ Letter 1-oz (56) 85¢ Semipostal (4) 92¢ First-Class 2-oz (2) $1.12 Non-Machineable (1) $1.16 First-Class 3-oz (1) Show More. Issue Year ... Additional Postage 3¢ | Multiple Formats. $90.00 - $300.00 Pears Stamps. Additional Postage 10¢ $2.00 Grapes Stamps. Additional Postage 5¢ $1.00 ...The easiest way to send letters from the USA to Australia is with Global Forever Stamps for $1.55 each. You can also use regular, domestic forever stamps as long as they add up to $1.55. Extra postage is required over 1 ounce. Here's the first class postage you'll need to send letters to Australia, which is part of "group 3" in the USPS Price List.

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The postage is $1.76 for a standard letter envelope of 2 oz. How much postage needed to send large manila envelope from Nebraska to the United Kingdom weighing 10.4 oz? how many stamps for a 10.4 ...A 2oz envelope costs $1.36 cents and needs two forever stamps ($1.32) and one additional ounce stamp (24 cents) A 4oz envelope costs $2.07, equivalent to three forever stamps. An 8oz envelope costs $3.03, requiring four forever stamps plus an additional ounce stamp. You can also choose to simply overpay postage and use only …The easiest way to send letters from the USA to Brazil is with Global Forever Stamps for $1.55 each. You can also use regular, domestic forever stamps as long as they add up to $1.55. Extra postage is required over 1 ounce. Here's the first class postage you'll need to send letters to Brazil, which is part of "group 9" in the USPS Price List.The easiest way to send letters from the USA to Poland is with Global Forever Stamps for $1.55 each. You can also use regular, domestic forever stamps as long as they add up to $1.55. Extra postage is required over 1 ounce. Here's the first class postage you'll need to send letters to Poland, which is part of "group 4" in the USPS … What was the postage for a first class letter in the year 2000? The price of a First Class Stamp in 2000 was 33 cents. It was good for one ounce of First Class Postage. If your letter is a standard-sized envelope and weighs 3.5 ounces or less, you will need one stamp. This includes 9×12, legal, and manila envelopes, Two stamps are needed for the first ounce, and postage will be an additional $0.20 cents after. To determine how many stamps you need and where do you buy stamps, you'll need to know the weight ...How do I send a letter to Canada? USPS Postage to Canada As of 2020, stamps for standard-sized letters and standard-sized postcards up to 1 ounce start at $1.15. You can mail a first-class letter up to 3.5 ounces — costing $2.08 —before flat-rate charges apply. Sending a standard-sized postcard costs $1.15.Sep 26, 2023 · It depends on how much it weights but if it is just first class letter (less than 1 ounce) the rate is 45 cents. How much extra postage do you need for a 15 page letter? First class letters are $0 ... 68¢ Letter 1-oz (56) 85¢ Semipostal (4) 92¢ First-Class 2-oz (2) $1.12 Non-Machineable (1) $1.16 First-Class 3-oz (1) Show More. Issue Year ... Additional Postage 3¢ | Multiple Formats. $90.00 - $300.00 Pears Stamps. Additional Postage 10¢ $2.00 Grapes Stamps. Additional Postage 5¢ $1.00 ...First-Class Mail Letter 2019 Postage Rates 2018 Postage Rates Increase First-Class Mail Letter (1 oz.) $0.55 $0.50 $0.05 Metered Mail (1 oz.) - Online Postage Providers and Postage Meters $0.50 $0.47 $0.03 First-Class Mail Letter - each additional ounce $0.15 $0.21 -$0.06 First-Class Mail Flat/Large Envelope (1 oz.) $1.00 $1.00 NO CHANGEA letter weighing 3.5 ounces – 1 Domestic Forever Stamp, 1 Postcard Stamp, and one 10-cent stamp costs $1.08. Note: Once your envelope exceeds the 3.5-ounce weight limit, you will need to look at rates for “flats,” which are large envelopes for mailings from 3.5-13 ounces. We will discuss postage rates for flats, other requirements, and ... ….

The easiest way to send letters from the USA to Greece is with Global Forever Stamps for $1.55 each. You can also use regular, domestic forever stamps as long as they add up to $1.55. Extra postage …We would like to show you a description here but the site won't allow us.How much postage is needed for a 3.3 oz letter? 3. How much postage does it take to send a standard letter from the US to Canada? Postage is $0,75 for up to 1 oz.Wondering how to sell stamps? Discover how to value and sell stamps, both online and off. If you buy something through our links, we may earn money from our affiliate partners. Lea...For letter weight between 2 and 3 ounces you have to pay $1.04 and for weight between 3 and 3.5 ounces, you have to pay $1.15. ... It is considered a large envelope and includes 9×12, legal, and manila envelopes, two stamps are needed for the first ounce, and postage will be an additional 0.25 cents after.How much postage for 2.2 oz letter? The about of postage you need for a 2.2 oz. letter in the United States is $.70. This is for a standard envelope.We would like to show you a description here but the site won't allow us.To be eligible for mailing at the price for letters, a piece must be: Rectangular. At least 3-1/2 inches high x 5 inches long x 0.007 inch thick. No more than 6-1/8 inches high x 11-1/2 inches long x 1/4 inch thick. First-Class Mail letters that have one or more nonmachinable characteristics will pay a nonmachinable surcharge. How much postage for 3 oz letter, You can apply for food stamps in Queens if you need financial help. But do ensure you meet the eligibility criteria in New York first. Also, take the time to provide all the releva..., 2024 USPS Certified Mail Rates. The U.S. Postal Service has announced a postage rate increase to be implemented on Sunday, January 21, 2024. Highlights for Certified Mail® customers include: Certified Mail is increasing $0.05 (1.15%) to $4.40 from $4.35. Return Receipt (PS Form 3811) is increasing $0.10 (2.82%) to $3.65 from $3.50., We would like to show you a description here but the site won't allow us., Letters up to 3 ounces will run you $0.78 in postage. Finally, you can send a letter up to 3.5 ounces for $0.95. Send a letter that weighs more than 3.5 ounces and your postage rates bump up considerably. USPS will charge flat-size prices (or even parcel prices) for letter-size mail that exceed 3.5 ounces in weight. A 4 ounce flat envelope runs ..., First-Class™ LETTER Postage NEW Metered Price Old Metered Price NEW Stamp (non-metered) Price ... 2.0 oz $0.71 $0.65 $0.75 $0.70 3.0 oz $0.91 $0.80 $0.95 $0.85 3.5 oz $1.11 $0.95 $1.15 $1.00 First-Class FLAT Postage NEW Metered Price Old Metered Price NEW Stamp ... 13.0 oz $3.40 $3.40 $3.40 $3.40 Extra Service Postage NEW Price Old ..., This represents an increase of 5.45% and is less than the average increase for many other postage rates. The price of an extra ounce will remain unchanged at 20 cents. The surcharge for non-standard square-shaped cards will increase from 20 to 30 cents. ... For 1 oz letters this means you'll need a $0.88 stamp (instead of a $0.58 stamp) and ..., 17 Dec 2022 ... ... 3-1/2 inches high x 5 ... ounce and dimensions (Length X Height X Width) per US postage stamp? ... COST Per Additional Ounce Letter 1st Class Mail., Large Envelope Properties. Select the one that most represents your mail piece. None of the following. is Rigid - does not bend easily. is NOT Rectangular or Square. contains items that cause more than 1/4 inch variation in thickness., Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size., How Shape and Size Affect Prices. Different postage prices apply to postcards, letters , large envelopes (flats), and parcels . In general, the bigger your mailpiece, the more it will cost to mail. In First-Class Mail, postcards cost less than letters. Letter size mail costs less than flat-size mail., How much postage for 2.2 oz letter? The about of postage you need for a 2.2 oz. letter in the United States is $.70. This is for a standard envelope., These postage stamps will always be equal to the cost of mailing a 2 oz first-class letter even if the price increases. The current cost of two ounce stamps from the post office is $0.78 each. ... For 3 oz. What is the current postage rate? According to USPS data, stamp prices have risen steadily through the years. The current price of 55 cents ..., Step 2. Enter Shipment Information. Number of Packages. Packaging Type: Select. Please select a Package Type. Please enter valid package information. Estimate your UPS® shipping costs with our online tool. The UPS Store is your shipping resource., Business Postage Price Calculator Business Calculator Video Library. New Mailing Manage Mailings. ... Letter. Property Minimum Maximum; Length: 5 inches: 11-1/2 inches: Height: 3-1/2 inches: 6-1/8 inches: Thickness: 0.007 inch: ... Minimum length + twice the diameter combined = 6-3/4 inches Maximum length + twice the diameter combined = 42 …, From $3.79 for Commercial Pricing. USPS Ground Advantage Return. From $5.00 at the Post Office. From $3.79 for Commercial Pricing. USPS Marketing Mail ® From $0.194 for Commercial Pricing. Every Door Direct Mail - Retail ® $0.203 for Flats up to 3.3 oz. Parcel Select ® From $2.58 for Commercial Pricing. USPS Connect ™ Local (available in ..., That would be the easiest and quickest way to figure it out. There's a lot of variables. If it's just papers you're mailing in there and the envelope plus documents weigh 3oz it would only take 1 stamp + 2 additional ounce stamps = $1.11. But if it weighs 3.1 ounce then you'll need 4 ounces of postage $1.35., This item has been corrected. This item has been corrected. Good morning, Quartz readers! What to watch for today Serious talks about the fiscal cliff begin. In an attempt to hamme..., Please select from the following options. Calculate Postcard price. View Flat Rate Envelopes. View Flat Rate Boxes. Calculate price based on Shape and Size., Large letter (500g) Max. dimensions. 260 x 360 x 20mm. E.g. C5, C4, B4 size envelopes. Regular delivery timetable (incl. GST) $7.50. Equivalent number of $1.50 stamps. 5. If you have received an invoice for underpaid mail and have additional questions, you'll find more information on our Underpaid mail page., For letter weight between 2 and 3 ounces you have to pay $1.04 and for weight between 3 and 3.5 ounces, you have to pay $1.15. ... It is considered a large envelope and includes 9×12, legal, and manila envelopes, two stamps are needed for the first ounce, and postage will be an additional 0.25 cents after., If the size of a large envelope is from 1 ounce to 2 ounces, the price of the Large Envelope postage will be $1.46 which is calculated as $1.26 for two Forever Stamps and $0.20 for one additional Stamp. For a 3 Ounces Large envelope, you will have to pay $1.66 i.e $1.26 for two Forever Stamps and $0.20 each for two additional Stamps., How much postage for 2.2 oz letter? The about of postage you need for a 2.2 oz. letter in the United States is $.70. This is for a standard envelope., Below are the rates for sending a large envelope ("flat") to Canada . The maximum weight for a standard letter is 3.5 ounces, so use a flat if you're sending more than 3.5 ounces. The base rate for is $2.90. Extra ounces cost more and the maximum weight is 15.994 ounces. The rates below are sourced directly from the USPS., How much does it cost to mail 4 oz letter? Updated: 9/18/2023. Wiki User. ∙ 13y ago. Best Answer. The general rule is one stamp per ounce. The first stamp is $0.44 and then the next three stamps ..., Rigid Letter-Size Pricing. “Rigid” letter-size pricing is when a greeting card can’t flex at least 1” and is less than the following dimensions: 11-1/2″ x 6-1/8″ x 1/4″ thick. 3.5 ounces. If your card or letter meets these conditions, they’ll be charged the standard postage rate, plus a non-machinable surcharge., The good news for online postage and meter users is that the savings for Metered letter rate remains at 4¢ per letter. The additional ounce rate is increasing from 24¢ to 28¢ for letters. First-Class Flats (Large Envelopes) are increasing 11¢, and the additional ounce rate for Flats is increasing 27¢ to 30¢ depending on the weight of the ..., Rigid Letter-Size Pricing. “Rigid” letter-size pricing is when a greeting card can’t flex at least 1” and is less than the following dimensions: 11-1/2″ x 6-1/8″ x 1/4″ thick. 3.5 ounces. If your card or letter meets these conditions, they’ll be charged the standard postage rate, plus a non-machinable surcharge., What is the weight of your mail piece? Pounds. Ounces. Please select from the following options. View Dimensions. Letter. Large Envelope. Package. Large Package. Any dimension over 12 inches (30.48 cm), If you buy a roll of forever stamps today for 50 cents each and next week postage goes up to 50 dollars for a first class 1 ounce letter, the forever stamps are still good and you only need one. A long time ago stamps had the price on them and if you were short you could put 1 cent and 2 cent stamps on the letters to make up the difference., One Price Up to 3.5 Ounces. Pay one price for up to 3.5 oz for First-Class Mail presort and automation compatible letters and cards. This is a cost-effective way for businesses to include promotional messages with bills, invoices, and statements. The one price for up to 3.5 oz rate is not a blended rate and does not apply First-Class Mail ..., Nov. 10, 2021. U.S. Postal Service Announces New Competitive Prices and Two New Mail Products for 2022. Postal Service continues to offer some of the lowest letter-mail postage rates in the industrialized world and a great value in shipping as we enhance our reliability and expand our product offerings in service to the American people., As a 5×7 manila envelope, you need 1 Forever Stamp, provided that it weighs less than 1 ounce. If its weight is from 1.1 ounces to 2 ounces, an additional ounce stamp is required at $0.20. If its weight is from 2.1 ounces to 3.0 ounces, you need two more stamps to cover the weight. Your package will be charged as a flat mailing if it is more ..., Below are the rates for sending a large envelope ("flat") to Canada . The maximum weight for a standard letter is 3.5 ounces, so use a flat if you're sending more than 3.5 ounces. The base rate for is $2.90. Extra ounces cost more and the maximum weight is 15.994 ounces. The rates below are sourced directly from the USPS.