Measurements
Convert paper dimensions from millimeters to inches
A straightforward conversion for both sides of a sheet.
By Printer Paper Size Team•
One inch is 25.4 millimeters. Divide a measurement in millimeters by 25.4 to express it in inches. Convert the width and height separately.
An A4 example
- Width: 210 ÷ 25.4 ≈ 8.27 inches.
- Height: 297 ÷ 25.4 ≈ 11.69 inches.
The displayed result is rounded; keep the original measurement when precision matters. To go the other way, multiply inches by 25.4. Letter’s 8.5 × 11 inches therefore becomes exactly 215.9 × 279.4 mm.
Use the unit selector on the paper reference homepage to compare both measurements together.