Ream Weight
Calculator

Inputs

Sheet area (m²)
0.06237

Results

Sheet area (m²)
0.06237
Weight per sheet (g)
4.9896
Ream weight (g)
2,494.8
Ream weight (kg)
2.4948

Design and print results

Sheet area (m²)0.06237
Weight per sheet (g)4.9896
Ream weight (g)2,494.8
Ream weight (kg)2.4948

formula-map diagram

Sheet area (m²)
0.06237
Weight per sheet (g)
4.9896
Ream weight (g)
2,494.8
Ream weight (kg)
2.4948

Formula breakdown

Formula

sheet mass (g) = gsm × area (m²); ream = sheet mass × sheet count

= 0.06237

Note

Simplified model: these are standard prepress and typographic relationships computed on nominal values. Real press bulk, paper caliper and shrinkage, ink limits for a given profile, font metrics and binding allowances vary by supplier and by job, so confirm with your printer and a proof before going to press.

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Frequently asked questions

What exactly does 'ream weight' measure?+

It's the weight of 500 sheets of a given paper at its basic (standard) size — for example, 500 sheets of 20lb bond paper at 17x22 inches weighs 20 pounds. It's a proxy for thickness and stiffness, not the weight of your specific stack.

How do I find the weight of my actual stack of paper, not the standard ream?+

Scale from the ream weight by the ratio of your actual sheet count and sheet size to the basic ream. If your sheets are cut smaller than the basic size, the per-sheet weight drops proportionally to the area.

Why do two papers with the same GSM have different 'pound' ream weights?+

Because the pound system bases the ream weight on a category-specific basic sheet size (bond, cover, text, etc.), while GSM is size-independent. A cover-weight ream and a bond-weight ream use different basic dimensions, so identical GSM produces different pound labels.

Does ream weight tell me how many sheets fit in a ream of paper by volume?+

No — ream weight and ream count (typically 500 sheets) are separate specifications. A heavier ream weighs more for the same 500-sheet count because each individual sheet is thicker, not because there are more sheets.

Why does shipping cost estimation use ream weight?+

Because paper is sold and shipped by the ream or carton, and ream weight lets you calculate total shipment weight without weighing every sheet individually — multiply ream weight by the number of reams in the order.