Envelope Calculator

Look up envelope sizes, calculate total mailing weight with contents, and determine printable area for envelope printing.

Envelope Size

Width (inches)

Height (inches)

Pages Inside

Paper Weight (GSM)

Paper Size Inside

Total Mailing Weight

0.0 oz

Envelope Weight

Contents Weight

Printable Area

Mail Class

Envelope Size & Mailing Guide

#10 envelope: 9.5 x 4.125 in (standard business)

USPS Letter: max 11.5 x 6.125 in, 0.25 in thick, 3.5 oz

USPS Large Envelope/Flat: max 15 x 12 in, 0.75 in thick, 13 oz

Envelope weight estimate: ~5-10g for standard, ~15-25g for catalog

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