Millimeters to Inches

1 mm ≈ 0.03937 in. Edit either value to convert instantly.

Value

From

To

1 mm≈in

≈ 1/16 in (Δ 0.0231299 in) · = 0.1 cm

Decimal places

Inch fraction

Conversion formula

in = mm × (0.001) × (5,000 / 127)

1 mm ≈ 0.0393701 in

millimeter (mm)

One millimeter equals exactly 0.001 m.

Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units

inch (in)

An inch is exactly 0.0254 m, or 2.54 cm; 12 inches make one foot.

Source: NIST SP 811, Appendix B.9 — conversion factors

Conversion table

mm	in
1	≈ 0.0393701
2	≈ 0.0787402
5	≈ 0.19685
10	≈ 0.393701
15	≈ 0.590551
20	≈ 0.787402
25	≈ 0.984252
30	≈ 1.1811
40	≈ 1.5748
45	≈ 1.77165

mm	in
50	≈ 1.9685
60	≈ 2.3622
70	≈ 2.75591
80	≈ 3.14961
90	≈ 3.54331
100	≈ 3.93701
150	≈ 5.90551
160	≈ 6.29921
170	≈ 6.69291
180	≈ 7.08661

Frequently asked questions

How many inches are in 1 millimeter?

1 mm ≈ 0.03937 in. in = mm × (0.001) × (5,000 / 127)

How do I convert mm to in?

in = mm × (0.001) × (5,000 / 127)

Is 1 millimeter bigger than 1 inch?

1 mm ≈ 0.03937 in.

Related conversions

Reverse conversion: inches to millimeters centimeters to inches inches to centimeters centimeters to feet feet to centimeters meters to feet feet to meters Height converter

Common values

1 mm 2 mm 3 mm 4 mm 5 mm 6 mm 7 mm 8 mm 9 mm 10 mm 11 mm 12 mm 13 mm 14 mm 15 mm 16 mm

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