MM to Inches Calculator
Convert millimetres to inches instantly. Essential for engineering, woodworking, and any precision measurement conversion.
Part of our Conversion Calculators collection.
MM to Inches Calculator
Free online calculator
Results update automatically as you type
How to Use This Calculator
- 1
Enter the length in millimetres.
- 2
See the result in decimal inches.
MM to Inches Formula
Inches = Millimetres / 25.4 1 inch = 25.4 mm (exact) 25.4 mm = 1 inch 10 mm = 0.394 inches
Example Calculation
Example: Convert 25 mm to inches
Inputs
mm: 25
Result
0.984 inches
25 / 25.4 = 0.984 inches (≈ 1 inch).
Frequently Asked Questions
How many mm is 1/4 inch?
0.25 × 25.4 = 6.35 mm.