1 centimeters to inches
0.39 in
1 cm = 0.39 in.
inches
0.39in
1 cm = 0.39 in
The short answer
How many inches is 1 centimeters?
1 cm = 0.39 in. 1 centimeter = 0.393701 inches, so the working is 1 × 0.393701 = 0.39.
To the nearest 1/8 that is 0 3/8 in.
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 centimeter = 0.393701 inches 1 × 0.393701 = 0.39
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 (in) | Off by |
|---|---|---|
| Whole number | 0 | −0.39370 |
| 1 decimal | 0.4 | +0.00630 |
| 2 decimals | 0.39 | −0.00370 |
Round trip: take 0.39 in back the other way and you land on 0.9906 cm — a drift of 0.0094 cm. That gap is the rounding, not the conversion.
Frequently asked questions
What is 1 centimeters in inches?
1 centimeters is 0.39 inches. 1 centimeter = 0.393701 inches, so the working is 1 × 0.393701 = 0.39.
What is 1 centimeters as a fraction?
To the nearest 1/8, 1 centimeters is 0 3/8 in. That is 0.0187 in under the exact value — well inside what a tape measure can resolve.
How accurate is 0.39 in?
Rounding to 0.39 in and converting straight back gives 0.9906 cm, a drift of 0.0094 cm from the 1 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
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