All tools

cm to inches

Centimetres to inches and back, with the nearest sixteenth of an inch. Free, with no account or uploads.

Convert centimetres to inches

Type the length. Inches come as a decimal and to the nearest sixteenth, as on a ruler.

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

11.811 in

30 cm is about 11.811 in.

  • 11 13/16 in, to the nearest 1/16 in (over by 0.0015 in)
Show it in
cminmftmmkmmiydft + in

How it is worked out

  1. 1 inch is exactly 2.54 cm, so divide: 30 ÷ 2.54 = 11.811 in.

The same in other units

  • 0.3 m
  • ≈ 0.984252 ft
  • 300 mm
  • 0.0003 km
  • ≈ 0.000186411 mi
  • ≈ 0.328084 yd
How it works and help
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.

  1. 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.
  2. 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.
  3. Show it in another unitPress a unit under the answer, or Turn it round to convert the answer back.

Questions people ask

How many centimetres are in an inch?
Exactly 2.54. The inch has been defined as 25.4 mm since 1959.
Can I get the answer as a fraction of an inch?
Yes: the nearest sixteenth is shown under the answer, with how far off it is. Under More options, choose eighths, thirty-seconds or sixty-fourths instead.
How do I convert inches to cm?
Type it the other way, as in 12 in to cm, or press Turn it round. Inches can be written with fractions, as in 3 1/2 in.

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 guide

Guides

Same tool, other jobs

Tools nearby