This converter turns centimeters into mils instantly, using the exact factor 1 centimeter = 393.7007874 mils. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One hundredth of a metre, and the everyday metric unit for body measurements and paper sizes. One thousandth of an inch, the standard thickness unit for plastic film and PCB traces.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
centimeters- The amount you are converting, measured in centimeters
393.7007874- The exact number of mils in one centimeter
mils- The converted result
How it works, step by step
- Enter the number of centimeters you want to convert.
- The value is multiplied by 393.7007874, the exact conversion factor.
- The result is displayed in mils, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 centimeters
Multiply 5 by 393.70079. That gives 1,968.5 mils. A quick sanity check: one centimeter is larger than one mil, so the number should get bigger — and it does.
Converting 72 centimeters
72 × 393.70079 = 28,346.46 mils. Working backwards, 28,346.46 ÷ 393.70079 returns 72 centimeters, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many mils are in one centimeter?
Exactly 393.7007874. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert centimeters to mils?
Mils = centimeters × 393.7007874. To reverse it, divide instead: centimeters = mils ÷ 393.7007874, which is the same as multiplying by 0.00254.
Is the centimeter bigger than the mil?
Yes. One centimeter equals 393.701 mils, so it is the larger unit.
Why does my answer differ slightly from other cm to mils converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a centimeter?
One hundredth of a metre, and the everyday metric unit for body measurements and paper sizes.
What is a mil?
One thousandth of an inch, the standard thickness unit for plastic film and PCB traces.
Centimeters to mils reference table
| Centimeters | Mils |
|---|---|
| 0.5 cm | 196.8504 mil |
| 1 cm | 393.7008 mil |
| 2 cm | 787.4016 mil |
| 3 cm | 1,181.1 mil |
| 5 cm | 1,968.5 mil |
| 10 cm | 3,937.01 mil |
| 15 cm | 5,905.51 mil |
| 20 cm | 7,874.02 mil |
| 25 cm | 9,842.52 mil |
| 50 cm | 19,685.04 mil |
| 75 cm | 29,527.56 mil |
| 100 cm | 39,370.08 mil |
| 250 cm | 98,425.2 mil |
| 500 cm | 196,850.39 mil |
| 1000 cm | 393,700.79 mil |
Exact factor: 1 centimeter = 393.7007874 mils. Values rounded for display.