A ream can apply to many different paper types, such as:
A4 paper
A3 paper
Offset printing paper
Fort paper
PhotoCopy paper
Kraft paper
…
How Many Sheets Are in One Ream?
According to the prevailing standard, one ream contains 500 sheets. This is the most common specification when purchasing office copy paper or printer paper. However, there are a few variations:
1 ream = 100 sheets: Often used for specialty art paper, heavyweight paper, or special-purpose sheets.
1 ream = 250 sheets: Some specialized printer paper lines may be packaged this way for easier distribution.
Nonetheless, unless otherwise noted, 1 ream = 500 sheets is the universally accepted default in the paper industry.
Why Is It Called a “Ream”?
The word “ream” is borrowed from English (“ream of paper”), a unit of measurement for the number of sheets that dates back to the 14th century. Today, “ream” remains a widely used unit throughout the global paper industry—from manufacturers to distributors to end consumers.
What to Note When Buying a Ream of Paper?
When selecting a ream of paper, consider the following:
Paper type: A4, A3, colored printing paper, kraft paper, etc.
Weight (GSM): Common weights are 70gsm and 80gsm.
Brand and whiteness: Higher-quality paper produces better prints and reduces the risk of paper jams.
Sheets per ream: Double-check if purchasing specialty paper.
Summary
A ream refers to a package of paper sold in a standardized quantity.
A standard ream = 500 sheets.
You may also encounter smaller reams of 100 or 250 sheets, depending on the product line.
If you’re looking to purchase quality reams of paper for office use, printing, or production, choose reputable brands and verify the packaging details carefully.