12 inches to centimeters
30.48 cm
12 in = 30.48 cm, or 1 ft.
centimeters
30.48cm
12 in = 30.48 cm
The short answer
How many centimeters is 12 inches?
12 in = 30.48 cm, which reads as 1 ft. 1 inch = 2.540000 centimeters, so the working is 12 × 2.540000 = 30.48.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 inch = 2.540000 centimeters 12 × 2.540000 = 30.48
12 inches as 1 ft
A decimal is the right form for a spreadsheet and the wrong one for almost everything else. Split into whole units, 12 in is 1 ft — the reading you would actually give someone, and the one a tape measure, a scale, or a timetable is marked in.
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (cm) | Off by |
|---|---|---|
| Whole number | 30 | −0.48000 |
| 1 decimal | 30.5 | +0.02000 |
| 2 decimals | 30.48 | exact |
Round trip: take 30.48 cm back the other way and you land on 12.0000 in — a drift of 0.0000 in. That gap is the rounding, not the conversion.
What 12 in looks like
11 in
US Letter paper is 8.5 by 11 in, slightly wider and slightly shorter than an A4 sheet.
Frequently asked questions
What is 12 inches in centimeters?
12 inches is 30.48 centimeters. 1 inch = 2.540000 centimeters, so the working is 12 × 2.540000 = 30.48.
What is 12 inches written out in whole units?
1 ft. A decimal answer such as 30.48 cm is the right shape for a form field or a spreadsheet, but the compound form is what a tape measure, a scale, or a schedule actually reads.
How accurate is 30.48 cm?
Rounding to 30.48 cm and converting straight back gives 12.0000 in, a drift of 0.0000 in from the 12 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Inches to Cm Converter
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