What this calculator does
Paper is traditionally sold and counted in its own set of units, not just individual sheets. A quire is 25 sheets, and a ream is a bundle of quires: 500 sheets under the modern standard used by most paper manufacturers today. This converter moves between sheets, quires and reams in either direction.
The ream size is not perfectly universal. Printers and papermakers historically used a 480-sheet "short ream" (20 quires of 24 sheets), and some trades still reference it. The 500-sheet ream became the dominant modern standard, but if you are working from an older specification or a supplier that quotes a different figure, the ream size here is editable rather than fixed.
The formula
Enter an amount in sheets, quires or reams and it converts to the other two. A quire is always 25 sheets. A ream is the sheets-per-ream figure you set, multiplied by the number of reams: the modern standard of 500 is the default, but this can be changed to 480 or any other figure a supplier specifies.
| Term | Meaning |
|---|---|
| Sheet | One individual piece of paper. |
| Quire | A standard bundle of 25 sheets. |
| Ream | A standard bundle of reams, most commonly 500 sheets today, historically 480. |
The inputs explained
| Field | What to enter |
|---|---|
| Amount to convert | The quantity you want to convert, in whichever unit you select below. |
| Unit entered | The unit the amount above is measured in. |
| Sheets per ream (500 is the common modern standard, 480 is the older traditional definition) | How many sheets make up one ream. 500 is the common modern default; use 480 for the older traditional definition or whatever figure your supplier quotes. |
When to use it
Ordering printer paper for an office
Suppliers often quote paper by the ream or by the case of several reams. Converting a required sheet count (from an estimated print job) into reams tells you how many to order.
Working from an old print specification
Older printing trade documents sometimes specify quantities using the 480-sheet short ream. Setting the ream size to 480 keeps the conversion consistent with that historical figure.
Splitting a bulk delivery into smaller units
A large delivery counted in reams can be broken down into quires or individual sheets for stock-taking or splitting between departments.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How many sheets are in a given number of reams, at the standard 500-sheet ream?
A range of ream quantities converted to sheets and quires.
| Reams | Total sheets | In quires (25 sheets each) |
|---|---|---|
| 1 | 500.0 | 20.00 quires |
| 2 | 1,000.0 | 40.00 quires |
| 5 | 2,500.0 | 100.00 quires |
| 10 | 5,000.0 | 200.00 quires |
| 20 | 10,000.0 | 400.00 quires |
| 50 | 25,000.0 | 1,000.00 quires |
How does the sheet count change between the 480-sheet and 500-sheet ream definitions?
The same 10 reams, compared under the two common ream-size definitions.
| Sheets per ream | Total sheets | In reams (at the ream size entered) |
|---|---|---|
| 480 | 4,800.0 | 10.000 reams |
| 500 | 5,000.0 | 10.000 reams |
Questions
How many sheets are in a ream?
Most commonly 500 sheets, which is the modern standard used by most paper manufacturers and suppliers. An older "short ream" of 480 sheets (20 quires of 24) was traditional in some printing trades, so always check the figure your supplier is using if precision matters.
How many sheets are in a quire?
A quire is 25 sheets, a smaller and more historically consistent unit than the ream.
Why are there two different ream sizes?
The 480-sheet short ream came from an older convention of 20 quires of 24 sheets. As papermaking and trade practices standardised, 500 sheets (20 quires of 25) became the dominant modern definition, though references to the older figure still turn up in some specifications.
Is a ream always the same weight of paper?
No. Ream weight depends on the paper's thickness and material (its "grammage"), not just the sheet count, so two reams of the same sheet count can weigh very different amounts depending on the paper stock.
For other everyday bulk-counting conversions, see the Reading & Speaking Time Calculator for word-count based estimates.