Convert Centimeters to Thou
1 centimeter is 393.7 thou. One centimeter is exactly 393.700787402 thou.
One centimeter is 393.70079 thou. To convert centimeters to thou, multiply by 393.70079; to go the other way, divide by 393.70079 or multiply by 0.00254. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST. One hundredth of a meter, and the unit most of the world states height in.
Factor checked against the defining standard · How we check
- Centimeters × 393.70079
1 * 393.70079393.701 thou
1 centimeter in every length unit
| Unit | Value | Exact factor |
|---|---|---|
| inches | 0.3937007874 in | × 0.393700787402 |
| feet | 0.03280839895 ft | × 0.0328083989501 |
| yards | 0.01093613298 yd | × 0.0109361329834 |
| miles | 0.000006213711922 mi | × 0.00000621371192237 |
| millimeters | 10 mm | × 10 |
| decimetres | 0.1 dm | × 0.1 |
| centimeters (as entered) | 1 cm | — |
| meters | 0.01 m | × 0.01 |
| kilometers | 0.00001 km | × 0.00001 |
| nautical miles | 0.000005399568035 nmi | × 0.00000539956803456 |
| micrometers | 10,000 µm | × 10,000 |
| nanometers | 10,000,000 nm | × 10,000,000 |
| thou | 393.7007874 thou | × 393.700787402 |
Factors are entered by hand from NIST rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: centimetres to thou is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert centimeters to thou? The converter and the working
- 1.Take the measurement in centimeters.
- 2.Multiply by 393.70079 — that is how many thou fit in one centimeter.
- 3.To go back the other way, divide by 393.70079, or multiply by 0.00254.
Worked example: 25 centimeters to thou
- Formula
- cm × 393.70079 = thou
- Arithmetic
- 25 × 393.70079 = 9,842.52 thou
- Answer
- 25 cm = 9,842.52 thou
The factor is rounded for display; the figure above is computed from the full value.
Centimeters to thou conversion table
| Centimeters | Thou |
|---|---|
| 1 cm | 393.7 thou |
| 2 cm | 787.4 thou |
| 3 cm | 1,181.1 thou |
| 4 cm | 1,574.8 thou |
| 5 cm | 1,968.5 thou |
| 6 cm | 2,362.2 thou |
| 7 cm | 2,755.91 thou |
| 8 cm | 3,149.61 thou |
| 9 cm | 3,543.31 thou |
| 10 cm | 3,937.01 thou |
| 12 cm | 4,724.41 thou |
| 15 cm | 5,905.51 thou |
| 20 cm | 7,874.02 thou |
| 25 cm | 9,842.52 thou |
| 50 cm | 19,685.04 thou |
| 100 cm | 39,370.08 thou |
| 200 cm | 78,740.16 thou |
| 300 cm | 118,110.24 thou |
| 500 cm | 196,850.39 thou |
| 1000 cm | 393,700.79 thou |
| 2000 cm | 787,401.57 thou |
| 5000 cm | 1,968,503.94 thou |
| 10000 cm | 3,937,007.87 thou |
What is a centimeter?
One hundredth of a meter, and the unit most of the world states height in.
What is a thou?
A thousandth of an inch, exactly 25.4 micrometers, and called a mil in American workshops — the same word the metric world uses for a millimeter, which is why a drawing marked "5 mil" is worth checking twice.
How many thou are in a centimeter?
One centimeter is 393.70079 thou. Going the other way, one thou is 0.00254 centimeters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every length unit here
The whole group — 13 units with their symbols and the size of each one in meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a centimeter.
Source: NIST — international yard and pound agreement (inch = 25.4 mm exactly)
Cite this page
- APA
- Rule Calculator. (2026). Convert Centimeters to thou. Rule Calculator. https://rulecalculators.com/convert/centimeter-to-thou
- MLA
- "Convert Centimeters to thou." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/centimeter-to-thou.
- Chicago
- Rule Calculator. "Convert Centimeters to thou." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/centimeter-to-thou.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many thou are in a centimeter?
- 393.70079. A thousandth of an inch, exactly 25.4 micrometers, and called a mil in American workshops — the same word the metric world uses for a millimeter, which is why a drawing marked "5 mil" is worth checking twice.
- How do I convert thou back to centimeters?
- Divide by 393.70079, or multiply by 0.00254 — they are the same operation.
Other length conversions
Thou to centimeters — the same conversion the other way.