Postage for a 3 oz Invitation
An invitation over 2 oz and up to 3 oz costs $1.40. One Three-Ounce stamp covers it, or a Forever stamp plus two Additional Ounce stamps.
Your answer
Standard letter
No extra postageRegular letter postage. No surcharge.
- Postage per piece
- $1.40
- 100 invitations
- $140.00
Stamps for each one
1 × Three-Ounce
Why
- This is a standard letter: within 6.125 x 11.5 in, no thicker than 0.25 in, and length divided by height is 1.36 (it must be between 1.3 and 2.5). USPS rule
Rates last verified on
100 invitations: $140.00 in postage ($1.40 each, standard letter)
Who ends up at 3 ounces
Three ounces is a substantial invitation. It is where pocket folds, double envelopes, letterpress on double-thick stock and suites with four or five inserts tend to land. If your suite is a single card and a reply card, you are probably not here, and it is worth weighing again.
Stamps that make 3 ounces
- One Three-Ounce stamp, worth $1.40. Exact.
- One Two-Ounce stamp plus one Additional Ounce stamp: $1.11 + $0.29. Exact.
- One Forever stamp plus two Additional Ounce stamps: $0.82 + $0.29 + $0.29. Exact.
- Two Forever stamps are worth $1.64, which also covers $1.40 with $0.24 to spare.
You are close to the top of the letter range
Letters go up to 3.5 oz. Between 3 and 3.5 oz the price is $1.69. Above 3.5 oz the invitation is priced as a large envelope: $2.56 for anything up to 4 oz.
So a suite at 3.4 oz and a suite at 3.6 oz differ by $0.87 each. If your invitations weigh in the low threes, check several, because one heavy sheet can carry a piece over the line.
Thickness becomes a real question
A 3 oz suite is usually a thick one. Letters may be at most 1/4 in thick. Over that, the piece is a large envelope regardless of weight, at $2.27 for 3 oz. Measure the thickest point of a sealed envelope before you buy stamps.
With the surcharge
A nonmachinable 3 oz letter, such as a square one or one with a wax seal, costs $1.89. For 100 invitations that is $189.00 against $140.00 without it.
Check the weight twice
If you expected 2 oz and the scale says 2.2, do not round down. The 3 oz price applies from the first fraction over 2 oz.
Compare the options
| Option | Mail class | Each | For 100 |
|---|---|---|---|
| A7.5 rectangle, 3 oz | Standard letter | $1.40 | $140.00 |
| Same at 3.4 oz | Standard letter | $1.69 | $169.00 |
| Same at 3.6 oz | Large envelope (flat) | $2.56 | $256.00 |
| 3 oz, over 1/4 in thick | Large envelope (flat) | $2.27 | $227.00 |
| 3 oz with a wax seal | Nonmachinable letter | $1.89 | $189.00 |
Questions and answers
How much postage for a 3 oz wedding invitation?
$1.40 as a standard letter, or $1.89 if it is nonmachinable.
How many stamps for a 3 oz invitation?
One Three-Ounce stamp, or one Forever stamp plus two Additional Ounce stamps. Both come to exactly $1.40.
What does a 3.5 oz invitation cost?
$1.69, the top letter price. Anything heavier is priced as a large envelope.
What does a 4 oz invitation cost?
$2.56, because pieces over 3.5 oz pay large envelope prices.