Inches to Millimeters Converter
Please enter a valid positive number
Millimeters:
Centimeters:
Meters:
Conversion Formulas:
1 inch = 25.4 millimeters
1 inch = 2.54 centimeters
1 inch = 0.0254 meters
Common Length References:
Standard Ruler:
12 inches (304.8 mm)
Quarter Coin:
0.955 inches (24.26 mm)
Credit Card:
3.37 inches (85.6 mm)
Smartphone Screen:
5.5-6.7 inches (140-170 mm)
Standard Paper Clip:
1.375 inches (35 mm)