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mm to inches
Millimetres to inches as a decimal and as a fraction, and inches to millimetres. Free, with no account or uploads.
Convert millimetres to inches
Type the size. Inches come as a decimal and as the nearest fraction, with how far off it is.
Type an amount and its unit, and what to turn it into: 70 kg to lb, 98.6F, 1½ cups to ml, 2 cups sugar in grams.
About
0.393701 in
10 mm is about 0.393701 in.
- 3/8 in, to the nearest 1/16 in (under by 0.019 in)
Show it in
cminmftmmkmmiydft + in
How it is worked out
- 1 inch is exactly 25.4 mm, so divide: 10 ÷ 25.4 = 0.393701 in.
The same in other units
- 1 cm
- 0.01 m
- ≈ 0.0328084 ft
- 0.00001 km
- ≈ 0.00000621371 mi
- ≈ 0.0109361 yd
Cups, spoons, pints and gallons are
USUKMetric (250 mL cup)
A rounded answer is shown to this many significant digits; exact answers are shown in full.
Inches to the nearest
1/81/161/321/64
Every factor comes from its definition and is worked out exactly on your device. Nothing you type is sent anywhere.
A little help along the way
Follow these steps. Every option is explained underneath. Everything is worked out in your browser; nothing is sent anywhere.
- Type what to convertAn amount, its unit and what to turn it into: 70 kg to lb, 5'11", 98.6F or 3/4 cup flour in grams. With no unit after to, the usual one is chosen.
- Read the answerIt is said in words, exactly or about, with the forms people use: feet and inches, stone and pounds, spoonfuls, and both kinds of gigabyte.
- Show it in another unitPress a unit under the answer, or Turn it round to convert the answer back.
Questions people ask
- What is 10 mm in inches as a fraction?
- About 0.3937 inches, which is 3/8 inch to the nearest sixteenth (under by 0.019 inch). Choose sixty-fourths under More options for 25/64.
- How many mm are in an inch?
- Exactly 25.4, since the inch was defined as 25.4 mm in 1959.
- Can I type inches with a fraction?
- Yes: 5/8 in to mm gives exactly 15.875 mm.
This page is the Unit converter, opened for this one job; every other tool it has is one press away. Each of its settings is explained on the Unit converter's own page.
Read the step-by-step guideKeep going
Guides
- mm to inches as a fraction: a conversion chart method
- Exact unit conversions: where the factors come from
- How to convert kg to lbs, with pounds and ounces
- How to convert cm to inches, and inches to cm
- Celsius to Fahrenheit formula, with examples
- How to convert km to miles, and miles to km
- How to convert meters to feet and inches
- Height converter: feet and inches to cm, and cm to feet