Metric to Inches Calculator
Created by: Ethan Brooks Conversion Specialist
Last updated:
One inch is exactly 25.4 mm, so divide millimeters by 25.4, centimeters by 2.54, or multiply meters by 39.37. 10 mm is 0.39 inches (just over 3/8″), 30 cm is 11.81 inches and 1.75 m is 68.9 inches (5′ 8.9″). The calculator also gives the nearest 1/16″ mark on a tape measure.
Metric to Inches Calculator
ConversionConvert millimeters, centimeters or meters to inches, feet and inches, and the nearest 1/16″.
Metric to inches charts
Millimeters to inches
| Millimeters | Inches | Nearest 1/16″ |
|---|---|---|
| 1 mm | 0.039 in | 1/16″ |
| 2 mm | 0.079 in | 1/16″ |
| 3 mm | 0.118 in | 1/8″ |
| 4 mm | 0.157 in | 3/16″ |
| 5 mm | 0.197 in | 3/16″ |
| 6 mm | 0.236 in | 1/4″ |
| 8 mm | 0.315 in | 5/16″ |
| 10 mm | 0.394 in | 3/8″ |
| 12 mm | 0.472 in | 1/2″ |
| 13 mm | 0.512 in | 1/2″ |
| 15 mm | 0.591 in | 9/16″ |
| 16 mm | 0.63 in | 5/8″ |
| 19 mm | 0.748 in | 3/4″ |
| 20 mm | 0.787 in | 13/16″ |
| 22 mm | 0.866 in | 7/8″ |
| 25 mm | 0.984 in | 1″ |
| 30 mm | 1.181 in | 1 3/16″ |
| 32 mm | 1.26 in | 1 1/4″ |
| 35 mm | 1.378 in | 1 3/8″ |
| 38 mm | 1.496 in | 1 1/2″ |
| 40 mm | 1.575 in | 1 9/16″ |
| 45 mm | 1.772 in | 1 3/4″ |
| 50 mm | 1.969 in | 1 15/16″ |
| 60 mm | 2.362 in | 2 3/8″ |
| 70 mm | 2.756 in | 2 3/4″ |
| 75 mm | 2.953 in | 2 15/16″ |
| 80 mm | 3.15 in | 3 1/8″ |
| 90 mm | 3.543 in | 3 9/16″ |
| 100 mm | 3.937 in | 3 15/16″ |
Centimeters to inches
| Centimeters | Inches | Nearest 1/16″ | Feet and inches |
|---|---|---|---|
| 1 cm | 0.394 in | 3/8″ | — |
| 2 cm | 0.787 in | 13/16″ | — |
| 2.5 cm | 0.984 in | 1″ | — |
| 3 cm | 1.181 in | 1 3/16″ | — |
| 4 cm | 1.575 in | 1 9/16″ | — |
| 5 cm | 1.969 in | 1 15/16″ | — |
| 6 cm | 2.362 in | 2 3/8″ | — |
| 7 cm | 2.756 in | 2 3/4″ | — |
| 8 cm | 3.15 in | 3 1/8″ | — |
| 9 cm | 3.543 in | 3 9/16″ | — |
| 10 cm | 3.937 in | 3 15/16″ | — |
| 12 cm | 4.724 in | 4 3/4″ | — |
| 15 cm | 5.906 in | 5 7/8″ | — |
| 18 cm | 7.087 in | 7 1/16″ | — |
| 20 cm | 7.874 in | 7 7/8″ | — |
| 25 cm | 9.843 in | 9 13/16″ | — |
| 28 cm | 11.024 in | 11″ | — |
| 30 cm | 11.811 in | 11 13/16″ | — |
| 35 cm | 13.78 in | 13 3/4″ | 1′ 1.8″ |
| 40 cm | 15.748 in | 15 3/4″ | 1′ 3.7″ |
| 45 cm | 17.717 in | 17 11/16″ | 1′ 5.7″ |
| 50 cm | 19.685 in | 19 11/16″ | 1′ 7.7″ |
| 60 cm | 23.622 in | 23 5/8″ | 1′ 11.6″ |
| 70 cm | 27.559 in | 27 9/16″ | 2′ 3.6″ |
| 75 cm | 29.528 in | 29 1/2″ | 2′ 5.5″ |
| 80 cm | 31.496 in | 31 1/2″ | 2′ 7.5″ |
| 90 cm | 35.433 in | 35 7/16″ | 2′ 11.4″ |
| 100 cm | 39.37 in | 39 3/8″ | 3′ 3.4″ |
| 120 cm | 47.244 in | 47 1/4″ | 3′ 11.2″ |
| 150 cm | 59.055 in | 59 1/16″ | 4′ 11.1″ |
Meters to inches (heights)
| Meters | Inches | Nearest 1/16″ | Feet and inches |
|---|---|---|---|
| 0.5 m | 19.685 in | 19 11/16″ | 1′ 7.7″ |
| 1 m | 39.37 in | 39 3/8″ | 3′ 3.4″ |
| 1.5 m | 59.055 in | 59 1/16″ | 4′ 11.1″ |
| 1.52 m | 59.843 in | 59 13/16″ | 4′ 11.8″ |
| 1.6 m | 62.992 in | 63″ | 5′ 3″ |
| 1.65 m | 64.961 in | 64 15/16″ | 5′ 5″ |
| 1.7 m | 66.929 in | 66 15/16″ | 5′ 6.9″ |
| 1.75 m | 68.898 in | 68 7/8″ | 5′ 8.9″ |
| 1.8 m | 70.866 in | 70 7/8″ | 5′ 10.9″ |
| 1.85 m | 72.835 in | 72 13/16″ | 6′ 0.8″ |
| 1.9 m | 74.803 in | 74 13/16″ | 6′ 2.8″ |
| 2 m | 78.74 in | 78 3/4″ | 6′ 6.7″ |
| 2.5 m | 98.425 in | 98 7/16″ | 8′ 2.4″ |
| 3 m | 118.11 in | 118 1/8″ | 9′ 10.1″ |
How to convert metric measurements to inches
inches = mm ÷ 25.4
inches = cm ÷ 2.54
inches = m × 39.3701
All three come from one definition: 1 inch = 25.4 mm. A centimeter is 10 mm and a meter is 1,000 mm, so divide by 2.54 or 0.0254 respectively. To go from inches back to metric, multiply by the same numbers.
Reading a fraction off a tape measure
Multiply the decimal part of the inches by 16 and round. For 4.72 inches: 0.72 × 16 = 11.5, so read 4 11/16″ or 4 3/4″ depending on which way the measurement must err. The calculator rounds to the nearest mark.
Frequently Asked Questions
How do I convert metric to inches?
Convert to millimeters, then divide by 25.4. For centimeters, divide by 2.54; for meters, multiply by 39.37. 30 cm ÷ 2.54 = 11.81 inches.
How many inches is 1 cm?
1 cm is 0.3937 inches, a little under 3/8″. 10 cm is 3.94 inches and 100 cm (1 meter) is 39.37 inches.
How many mm are in an inch?
Exactly 25.4 mm. The inch has been defined as 25.4 mm since 1959, so the conversion is exact in both directions.
What is 10 mm in inches?
10 mm is 0.394 inches, just over 3/8″ (0.375″). That is why a 10 mm wrench is close to, but not the same as, a 3/8″ wrench.
How tall is 170 cm in feet and inches?
170 cm is 66.9 inches, or 5 feet 6.9 inches (about 5′7″). 180 cm is 5′10.9″ (about 5′11″).
Why show the nearest 1/16 inch?
US tape measures and rulers are marked in sixteenths. The fraction tells you which mark to read; the decimal is the exact value.
Sources and References
- NIST Handbook 44, Appendix C: General Tables of Units of Measurement. 1 inch = 2.54 centimeters exactly.
- NIST Special Publication 811. Appendix B: conversion factors for length.