How Many Stamps Do I Need

If you are sending out a piece of mail, it will assist to know how many stamps you will require to add. In this article, we give you the pricing for domestic & international mailing.

How Many Stamps Do I Need

How Many Stamps Do I Need to Send a Letter?

Two – 2
In short, you need two Domestic Forever Stamps. This, as you know, equals $1. However, this is just for the first ounce. You have to purchase more stamps for every ounce above that weight.

How Many Stamps Do I Need To Send A Letter In The U.S?

New Rate* Total Cost Stamps Required
Postcard $0.35 1 x Postcard stamp
1 oz. First Class Letter $0.55 1 x 1 oz. Forever stamp
2 oz. First Class Letter $0.70 1 x 2 oz. Forever stamp
3 oz. First Class Letter $0.85 1 x 3 oz. Forever stamp
1 oz. First Class Large Letter** $1.00 1 x 3 oz. Forever stamp
& 1 x Additional Ounce stamp
2 oz. First Class Large Letter** $1.15 1 x 3 oz. Forever stamp
& 2 x Additional Ounce stamp
3 oz. First Class Large Letter** $1.30 1 x 3 oz. Forever stamp
& 3 x Additional Ounce stamp
First-Class Letters additional ounces charge $0.15 Additional Ounce Stamp

How Many Stamps Do I Need to Send a Parcel?

Its depend on

  1. Select the destination country.
  2. Type in the zip codes (yours and your recipients).
  3. Choose the date and time you’ll be mailing it.
  4. Choose the type of postage you want to use.

How Many Stamps Do I Need For A 9×12 Envelope?

In short, you need two Domestic Forever Stamps

You need different stamps for different mail and different weight of the parcel. Here we will describe the following.

How Many Stamps Do I Need Calculator

The table below shows how many stamps you will need based on the weight of your letter.

Mail Type & Weight Number Of Stamps – 1st class Number Of Stamps – 2nd class
Letter*  – 100g or less 1 1
Large Letter** 100g or less 2 2
Large Letter** 101g – 250g 2 3
Large Letter** 251g – 500g 3 3
Large Letter** 501g – 750g 4 4
Parcel*** 751g – 1000g 5 5
Parcel*** 1001g – 1250g 8 7
Parcel*** 1251g – 1500g 10 12
Parcel*** 1501g – 1750g 11 13
Parcel*** 1751g – 2000g 14 17
Parcel*** 2001g – 4000g 18 21

* Letter may incur extra charges if they exceed dimensions of 24cm x 16.5cm x 0.5cm.

** Large letters may incur extra charges if they exceed dimensions 35.3cm x 25

*** Parcels may incur extra charges if they exceed dimensions of 45cm x 35cm x 16cm.

Domestic Letter Shipping

Domestic Postcard Shipping

International Letter Shipping — USA to the UK

International Letter Shipping — the USA to Canada

Track your Parcel 

How Many Stamps Per Ounce?

To know How Many Stamps Per Ounce you can check the following table.

Domestic Letter Shipping — Price Per Ounce

The Weight of Your Letter The Number and Type of Stamp
1 oz or less 1 x Domestic Forever Stamp. This will cost you 55 cents.
2 oz 1 x Domestic Forever Stamp and 1 x 15 cent Additional Ounce stamps. This will cost you 70 cents in total. 

Alternatively, you can overpay by using 2 x Domestic Forever Stamps. Here, you will pay an extra 40 cents.

3 oz 1 x Domestic Forever Stamp and 2 x 15 cents Additional Ounce stamps. This will cost you 85 cents in total. 

Alternatively, you can overpay by using 2 x Domestic Forever Stamps. Here, you’ll be overpaying by 25 cents.

3.5 oz 1 x Domestic Forever Stamp, 1 x Postcard stamp, and 1 x 10 cent stamp. This will cost you $1 in total. 

Alternatively, you can overpay by using 2 x Domestic Forever Stamps. Here, you’ll be overpaying by 10 cents.

Stamps Cost or Postage Rate 2021 List For USPS, Forever

The Weight of Your Flat The Number and Type of Stamp
1 oz or less 1 x Domestic Forever Stamp, 1 x 10 cents stamp, and 1 x Postcard stamp. This will cost you $1 in total. 

Alternatively, you can overpay by using 2 x Domestic Forever Stamps. Here, you’ll be overpaying by 10 cents.

2 oz 2 x Domestic Forever Stamps plus 1 x 10 cents stamp. This will cost you $1.20 in total. 

Alternatively, you can overpay by using 3 x Domestic Forever Stamps. Here, you’ll be paying 45 cents more than necessary.

3 oz 2 x Domestic Forever Stamps plus 2 x 15 cents Additional Ounce stamps. This will cost you $1.40 in total. 

Alternatively, you can overpay by using 3 x Domestic Forever Stamps. However, you’ll be paying 25 cents more than you need to.

4 oz 2 x Domestic Forever Stamps, 1 x 15 cents Additional Ounce stamp, plus 1 x Postcard stamp. This will cost you $1.60 in total. 

If you’d rather use Domestic Forever Stamps instead, you need to use 3. Just bear in mind that you’ll be overpaying by 5 cents.

5 oz 3 x Domestic Forever Stamps and 1 x 15 cents Additional Ounce stamp. This will cost you $1.80 in total. 

Alternatively, you can use 4 x Domestic Forever Stamps instead. Just bear in mind that you’ll be overpaying by 40 cents.

6 oz 3 x Domestic Forever Stamps plus 1 x Postcard stamp. This will cost you $2 in total. 

If you want to overpay, use 4 x Domestic Forever Stamps.

7 oz 4 x Domestic Forever Stamps. This will cost you $2.20 in total.
8 oz 4 x Domestic Forever Stamps, 1 x 5 cents stamp, plus 1 x 15 cents Additional Ounce stamp. This will cost you $2.40 in total. 

You can also overpay by using 5 x Domestic Forever Stamps. However, you’ll be paying 35 cents more than necessary.

9 oz 4 x Domestic Forever Stamps, 1 x 5 cents stamp, and 1 x Postcard stamp. This will cost you $2.60 in total. 

For ease, you can just use 5 x Domestic Forever Stamps. However, you’ll be overpaying by 15 cents.

10 oz 5 x Domestic Forever Stamps plus 1 x 5 cents stamp. This will cost you $2.80 in total. 

To make your life easier, just use 6 x Domestic Forever Stamps. Remember though, you’ll be overpaying by 50 cents. This can add up to a fair amount if you’re doing this regularly.

11 oz 5 x Domestic Forever Stamps, 1 x 10 cents stamp, plus 1 x 15 cents Additional Ounce stamp. This will cost you $3 in total. 

Alternatively, you can use 6 x Domestic Forever Stamps. Just remember that you’ll be overpaying by 30 cents.

12 oz 5 x Domestic Forever Stamps, 1 x 10 cents stamp, plus 1 x Postcard stamp. This will cost you $3.20 in total. 

If you’ve only got Domestic Forever Stamps to hand, use 6. You will, however, be overpaying by 10 cents.

13 oz 6 x Domestic Forever Stamps plus 1 x 10 cents stamp. This will cost you $3.40 in total. 

You can use 7 x Domestic Forever Stamps instead, but you’ll be overpaying by 45 cents. This can quickly add up if you’re not careful.

Ref Postage

People also ask

How do I know how many stamps to use?

How many stamps do I need per oz?

How many stamps do I need to send a letter to 2020?

How many stamps do I need in Canada?

How much does it cost to mail a letter in Canada 2020?

Can I put two stamps on the letter?

Is it cheaper to buy stamps online?

What happens if you put too much postage on a letter?

How much does it cost to buy stamps?