A roll of 100 USPS Forever stamps costs $78.00 at the current retail rate.
Buying a full roll of stamps feels simple until you hit the checkout screen and wonder what you’re paying for: one postage rate, a mix of stamp types, or extra postage for heavier mail. This guide clears it up fast, then helps you buy the right stamps for the mail you send.
How Much Do 100 Stamps Cost? With Current Forever Rate
USPS sets the retail price of a First-Class Mail Forever stamp at 78¢ per stamp, so the math for a basic roll is straightforward: 0.78 × 100 = $78.00. USPS also sells coils of 100 Forever stamps at $78.00, matching the per-stamp rate.
If you’re searching “how much do 100 stamps cost?”, this $78 figure answers the common case: a roll of standard Forever stamps meant for a 1-ounce, standard letter. If your mail is a postcard, heavier than 1 ounce, or shaped in a way that needs hand-canceling, the total changes because you need a different stamp or extra postage.
| USPS Stamp Type | Price Each | Cost For 100 |
|---|---|---|
| Forever (1-oz letter) | $0.78 | $78.00 |
| Postcard | $0.61 | $61.00 |
| Additional ounce | $0.29 | $29.00 |
| Two-ounce (2-oz letter) | $1.07 | $107.00 |
| Three-ounce (3-oz letter) | $1.36 | $136.00 |
| Nonmachinable (square/rigid) | $1.27 | $127.00 |
| Global Forever (1-oz intl) | $1.70 | $170.00 |
| Large envelope flat (1-oz) | $1.63 | $163.00 |
What Changes The Total Price Of 100 Stamps
“Stamps” isn’t one product. A roll can be 100 of the same stamp, or it can be 100 stamps you mix and match. The final cost depends on what you’re mailing, where it’s going, and how you plan to buy.
Mailpiece Type And Weight
A standard letter that weighs 1 ounce or less uses one Forever stamp. Add weight and you add postage. Many greeting cards stay under 1 ounce, but thicker cards, photos, or a stack of papers can push you over the 1-ounce line.
If your envelope weighs 2 ounces, you can pay with one two-ounce stamp, or you can use one Forever stamp plus one additional-ounce stamp. For 3 ounces, you can use a three-ounce stamp, or combine a Forever stamp with two additional-ounce stamps. The mix you choose affects how many of each stamp you need to buy in bulk.
Shape And Sorting Rules
Square envelopes, rigid mailers, and lumpy envelopes often can’t run through sorting machines. USPS charges a nonmachinable price for those pieces, even when they weigh under 1 ounce. That’s why a square invite can cost more than a basic letter.
Domestic Vs International
International letters and postcards use a Global Forever stamp. If you send cards overseas, a roll of 100 Global Forever stamps lands at $170.00. USPS lists the current international letter price and how Global Forever works on its How to Send a Letter or Postcard: International page.
Where You Buy
Buying from USPS, a grocery store, or a warehouse club usually means you pay the same face value for the stamp. The difference is convenience and packaging. USPS sells coils, books, and sheets, so you can choose what stores best for you.
If you buy from USPS online, you can choose coils, books, or sheets and pay by card. Orders ship to your mailbox, so you skip a counter line. Build a small stash, then reorder when you’re down to a week or two of stamps. This keeps your cash tied up in postage low. Also, open the package right away and store stamps flat so edges don’t curl.
Online marketplaces can be risky. Deep discounts can signal counterfeit stamps, which can get mail returned or delayed. If a deal looks too good, skip it.
Simple Math You Can Use For Any Stamp Roll
You can price any set of stamps with one clean formula:
- Total cost = price per stamp × quantity
So if you know the face value, you can scale it up or down. Here are quick examples that mirror real shopping choices:
- 100 Forever stamps: 0.78 × 100 = $78.00
- 100 postcard stamps: 0.61 × 100 = $61.00
- 100 additional-ounce stamps: 0.29 × 100 = $29.00
If you’re mixing stamps for heavier letters, split the math by stamp type, then add the totals. That keeps you from overbuying a stamp you rarely use.
How Forever Stamps Behave After A Rate Change
A Forever stamp pays the 1-ounce, First-Class Mail letter rate, even after USPS raises prices. That makes a roll feel less risky when you buy ahead. The trade-off is simple: you lock in the stamp count, not a dollar value you can spend on any service.
If you stocked up at an older rate, you don’t owe extra pennies on a normal 1-ounce letter. If you’re mailing something that needs more than the base letter rate, you still add postage with extra-ounce stamps or other denominations.
A Fast Way To Build Postage For Odd Weights
When a piece needs more than one stamp, build it like a small recipe:
- Weigh the mailpiece.
- Pick the base stamp that fits the mail type (letter, postcard, international, nonmachinable).
- Add extra-ounce stamps until you match the weight.
- If the shape is square, rigid, or lumpy, use the nonmachinable price instead of the basic letter price.
When A Roll Of 100 Forever Stamps Is The Right Buy
A 100-stamp coil is a good fit when you send standard letters often enough that you don’t want to restock every month. Think rent checks, school forms, thank-you cards, and routine mail.
Signs You’ll Use Them Up Before They Get Lost
- You mail at least 1–2 letters each week.
- You send seasonal cards and don’t want a last-minute store run.
- You keep stamps in one spot and can keep the coil clean and dry.
When Another Mix Makes More Sense
If most of your mail is postcards, buying postcard stamps in bulk drops the per-piece cost. If you mail thick greeting cards, you may want a smaller batch of Forever stamps plus a stack of additional-ounce stamps, so you can build the right postage as needed.
How To Avoid Paying For The Wrong Postage
Most stamp mistakes come from guessing weight or assuming any stamp works on any envelope. A few habits save time and returned mail.
Weigh Your Most Common Mail Once
A small kitchen scale is enough. Weigh your usual greeting card, your rent envelope, and your most common document packet. Write the weights down. Once you know your typical weights, you’ll know when a single Forever stamp is enough and when you need extra postage.
Know The Easy Visual Triggers
- Rigid mailers or clasps: treat them as nonmachinable unless USPS says otherwise.
- Square envelopes: plan on nonmachinable pricing.
- Thick cards: plan to weigh them, even if they feel light.
Check The Official Price Table When Rates Shift
USPS updates its posted rates, and Forever stamps stay valid even when rates rise. To confirm today’s retail prices for letters, postcards, and specialty shapes, use the USPS Postage Rates & Prices page.
Cost Details People Miss When Buying 100 Stamps
Most buyers think only about the stamp face value. A few other details can change what you spend or how smoothly your mail moves.
Sales Tax And Receipts
In many places, postage is not taxed, but state rules can differ. If you’re tracking expenses for a small business, keep the receipt or the email order confirmation so you can log postage as a mailing cost.
Stamp Format And Storage
Coils of 100 are compact and easy to tear off. Books are easier to share with a family and fit in a wallet. Sheets lie flat in a drawer. Pick the format that won’t get bent, damp, or stuck to itself.
Legit Buying Channels
Buying at USPS counters, the USPS online store, or well-known retailers lowers the odds of counterfeits. If you buy online, stick to sellers you can check. If you see blurry printing, missing perforations, or odd gum on the back, don’t use them.
Planning Purchases For Different Mailing Habits
If you’re stocking up for a household, think in months, not in “a roll.” A coil of 100 Forever stamps covers 100 one-ounce letters. If you mail two letters a week, that’s about 50 weeks of postage. If you mail ten letters a week, you’ll burn through the coil in ten weeks.
For heavier mail, budgeting by stamp parts helps. If you send a lot of 2-ounce letters, you can either buy two-ounce stamps, or buy Forever stamps plus additional-ounce stamps. The second route gives you more flexibility for odd weights.
| Mail Habit | Smart Bulk Buy | Why It Works |
|---|---|---|
| 1-oz letters most weeks | 100 Forever stamps | Simple, one-stamp postage |
| Mostly postcards | 100 postcard stamps | Lower cost per piece |
| Thick greeting cards | 60 Forever + 40 add-ounce | Build 1-oz or 2-oz postage |
| Invites in square envelopes | 20 nonmachinable + 80 Forever | Cover the odd shapes |
| Overseas holiday cards | 100 Global Forever | One stamp per 1-oz intl |
| Small business invoices | 200–300 Forever | Fewer restock runs |
Quick Checklist Before You Buy A Roll
- Pick the stamp type that matches your most common mail.
- Weigh one sample of that mail, so you’re not guessing.
- Buy from USPS or trusted retailers to avoid counterfeits.
- Store stamps flat, dry, and away from heat.
- When rates change, use posted USPS prices to confirm what you need.
If you came here asking how much do 100 stamps cost?, the answer for standard Forever stamps is $78.00. Once you know your usual mail weight and shape, you can also price postcard, international, or extra-ounce rolls in seconds.