How Many Stamps Do I Need To Send A Letter or Envelope, Per Oz

The postage stamp comes in various sizes and types. They differ based on their value, design, type of shipping, height, weight, and dimension of the parcel, and other factors. You too have faced situation where you have to ask this question: How many stamps do I need to send a letter/envelope/etc.

How Many Stamps Do I Need To Send A Letter or Envelope, Per Oz

Attaching a sufficient postal stamp is very essential as none of us want the Mail to be returned because of insufficient postal stamps. In the digital world, letters seem to be outdated. These postal stamps are vital for mailing letters, envelopes, or other small parcels. It is needed for both domestic and international mailing.

How Many Stamps Do I Need To Send A Letter, Parcel, Large Envelope, etc.

When you mail a letter, parcel, etc. It is crucial to know exactly how many stamps are required on it. And let me mind you that it can be quite confusing. You certainly need to know few things like; how much the letter or parcel weighs in ounces or grams, the address where the letter or parcel is being sent, the size of the letter, etc. Some of the questions that need to be answered are: How many stamps do I need for each case? In this article, we will guide you to find the answers to all the above questions.

How Many Stamps Do I Need To Send A Letter in The US?

To send a standard letter in the US: For sending a standard letter in the US, one first-class letter stamp or one Forever stamp needs to be pasted at the top right corner of the envelope. To mail within the US, for a standard size letter Forever stamp can be used. Depending on the size and weight of the letter, the stamps are attached to the mail.

How Many Stamps Do I Need For An Envelope?

For a 9×12 Large Envelope:

This is the standard size envelope that is accepted in all postal services. Just like other letters, this needs a postal stamp attached at the top right corner. For larger envelopes, one dollar for the first ounce and additional 0.20 dollars for more than one ounce.

For a 6×9 Envelope:

A 6 by 9 envelope that weighs about one ounce, requires a .50 dollar first-class rate stamp. If the envelope weighs above one ounce, then you need to pay 0.21 dollars additional charges on top of it.

For Manila Envelop:

The requirements for Manila envelopes are the same as 9 x 12 envelopes and other legal-sized envelopes. The postal charges are one dollar for the first ounce and for each additional ounce 0.20 dollar is charged. In case you use Forever Stamps for Manila envelopes that weigh less than one ounce, you will need two forever stamps.

What Are The Envelop Requirements:

  • The envelope must be rectangular.
  • The minimum size of the envelope is 5 inches by 3.5 inches. It should not exceed 11.5 by 6.125 inches. The envelope should not be thicker than ¼ inches.
  • The thickness of the envelope must be uniform.
  • The square envelope must be 5 inches.
  • The envelope should be bendable, otherwise, you must pay 21 cents additional charges since it will be categorized as non-machinable.

How To Weigh Your Envelope?

The postal charges are based on the shape, size, weight, destination, etc of the envelope. A postal scale can be helpful if you want to calculate the postal charges at home. You could also make use of a measuring app, use a tape measure or Yardstick, a kitchen scale, etc.

How Many Stamps Do I Need Per Oz?

Per ounce: A letter that weighs about one ounce, needs one first-class stamp and a first-class stamp will cost around 0.55 dollars, each additional ounce will be charged extra 0.15 dollars. Suppose you want to send a 2-ounce letter, you must make use of a postage stamp of 0.70 dollars. But remember, the price for the stamps might slightly vary depending upon the place from where you buy the stamp. The Forever stamp is the ideal postage stamp that is used for mailing standard-sized, regular one-ounce letters.

How Many Stamps Do I Need To Send A Parcel?

To send a parcel in the US: The parcel postage charges are calculated by the size and the weight of the parcel. The charges also depend on the distance the parcel needs to be traveled. Usually, the parcels are huge, so that they won’t fit in the mailbox. It must be taken to the post office to get it dispatched. They can assist you in sorting out the charges. If you prefer to know the charges for the parcel that you need to pay, or in case you want to print the postage label, make use of the USPS Postage Calculator.

Follow these simple steps to make use of the United States Postal Service Postage Calculator. In the drop-down box, enter the destination country, the zip codes where the parcel needs to be sent, the date, and the time that the parcel is being sent.

Also See: Does USPS Deliver on Sunday

Next, you must select the mode of shipment that you prefer like the flat rate boxes, flat rate envelopes, flat rate postcards, etc. The price will depend upon the size and shape of the postcard. The price for the parcel will be counted on the shipping options that have been selected by you. The display of all options helps you to compare the costs of other shipping options that are available.

If you want, you can even add certain additional options like Insurance, Registered mail, Certificate of mailing, etc. The final shipping cost will be then displayed, if you have not chosen any of the additional options, you only need to calculate the number of stamps that are needed for shipping the parcel. If any extra options have been chosen, you must have a shipping label printed at the post office or get it printed by yourself.

How Many Stamps Do I Need To Send A Postcard?

To send a postcard to Us: Sending postcards within the US is somewhat cheaper. You must buy a postcard stamp, it will cost you around 35 cents. The Domestic Forever Stamp can also be attached by paying 55 cents. The postcard must be rectangular. The dimensions must be at least 3.5 inches high and 5 inches long with 0.007 inches thickness. It should not be thicker than 0.016 inches and bigger than 4.25 inches high and 6 inches long.

Postage Stamps Needed For International Mail

The Global Forever Stamp is used as a postal stamp for international mails. The same can be made use of for one-ounce letters, for mailing throughout the world. They are easily available at the local post office. Postal services within the US may cost 1.20 dollars for internationally first-class mails. For mail larger than one ounce, additional charges are calculated based on their dimensions and weight.

Number of Postage Stamps Required To send a letter to Canada

Global Forever Stamp is the easiest way to send letters from the US to Canada. For other international places and the UK, the stamps will cover up to one ounce. But, for Canada, the same stamp will cover two ounces. Above two ounces, the user must pay additional stamp charges.

To Mailing A Letter To The UK

The simplest way to sent the letters from the US to the UK is by Global Forever Stamp which will cost about 1.20 dollars featuring a green succulent. They can be stylish to your international mail.

There are certain Important key things to remember when it comes to the envelope requirements, weighing the envelope, applying stamps, buying stamps, etc.

Where To Paste Stamps On A Letter?

The stamp is usually placed at the top right corner of the letter or postcard. This is simply done for consistency, to easily locate it. Otherwise, people look here and there in search for stamp. Since the stamps are applied at the right top corner, there is no need for the eyes to wander, you know the exact location where it is placed. But in case, the stamp has been applied somewhere else on the letter, it will still be sent to the appropriate address. You don’t have to be worried that your letter will be discarded. But, make sure it is placed at the right place that is at the top right corner for fast delivery services.

Where To Buy Stamps?

The most convenient place to buy postage stamps near me is the post office. But, the post office works for limited hours. There are other places too that you can check to buy the postcard or postal stamps. They include Amazon, office supply stores, ATMs, pharmacies, Gas stations, banks and other financial institutions, Walmart, or other popular grocery stores. Since most of the large grocery stores will be open till late at night, there are chances that you can pick postal stamps at such grocery stores.

Remember, not all pharmacies or gas stations carry postal stamps. Certain bigger stores will have the stamps whereas small pharmacies will limit only with medicines. ATMs are a new trending device that supplies postal stamps to customers. The United States Postal Service Website helps you to find Alternative locations to buy stamps. Furthermore if you are looking to sell stamps then no worries. You can read my article written on where to sell stamps and get informed for that too.


The postage stamp comes in small squares that are attached to the letters and small packages at the top right corner. They are generally issued at the post office, other authorized postage stamp dealers, or post-administration. The postage stamp will have the name of the issuing country displayed on it. The shape of the postal stamp may carry and specialized custom-made stamps are also currently available.

How many stamps do I need? Although, It will certainly depend on various factors like the size of the postal mail, the distance being traveled whether it is domestic or international mail, etc. In this article, we have given you an estimate of the number of stamps that are required for mailing a letter or sending a parcel.

Hope this article has helped you to answer all the relevant questions about the use of postal stamps for mailing a letter or parcel.