Convert Turns per Foot to Turns per Centimeter (TPF to TPcm)
1 turn per foot (TPF) = 0.03280839895 turns per centimetre (TPcm). 1 TPcm = 30.48 TPF. Example: 15 TPF = 15 × 0.03280839895 = 0.4921259843 TPcm.
Also searched as turns per foot to TPcm, turns per foot in TPcm, turns per foot into turns per centimetre, TPF to TPcm, TPF in turns per centimetre, TPF into turn per centimetre, turn per foot to turn per centimetre, TPF to turns per centimetre converter, turns per foot to turns per centimeter and how many turns per centimetre in a turn per foot.
1 TPF = 0.03280839895 TPcm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk turn per foot to turn per centimetre converter to paste a column from Excel.
How to Convert Turn per Foot to Turn per Centimeter
- 1 TPF = 0.03280839895 TPcm
- 1 TPcm = 30.48 TPF
- Example: convert 15 TPF to TPcm: 15 TPF = 15 × 0.03280839895 TPcm = 0.4921259843 TPcm
Formula
TPcm = TPF × 0.03280839895013
or TPcm = TPF ÷ 30.48
Derivation from SI units:
- 1 turn per foot = 1 turn per 0.3048 m = 3.280839895 TPM (exact)
- 1 turn per cm = 100 turns per metre
- 1 TPF = 3.280839895013 TPM ÷ 100 TPM per TPcm = 0.03280839895013 TPcm
Both units are defined exactly, so the factor is exact. Turn per Foot definition: turn per foot; Turn per Centimeter definition: turn per centimetre.
Worked examples
- A reading of 5 TPF converts to 0.1640419948 TPcm.
5 TPF × 0.03280839895 = 0.1640419948 TPcm - A value of 12 TPF is 0.3937007874 TPcm.
12 TPF × 0.03280839895 = 0.3937007874 TPcm
Turn per Foot to Turn per Centimeter conversion table
| Turns per Foot (TPF) | Turns per Centimeter (TPcm) |
|---|---|
| 1 TPF | 0.03280839895 TPcm |
| 2 TPF | 0.0656167979 TPcm |
| 3 TPF | 0.09842519685 TPcm |
| 5 TPF | 0.1640419948 TPcm |
| 8 TPF | 0.2624671916 TPcm |
| 10 TPF | 0.3280839895 TPcm |
| 12 TPF | 0.3937007874 TPcm |
| 20 TPF | 0.656167979 TPcm |
| 30 TPF | 0.9842519685 TPcm |
| 50 TPF | 1.640419948 TPcm |
Where it's used
Turns per Foot are used for cords, ropes and tyre cords, while turns per centimetre appear in filament and ply twist. Both measure yarn twist (turns per unit length), so the conversion is a fixed factor.
Turn per Foot to other yarn twist units
| Conversion | 1 TPF equals |
|---|---|
| turn per foot to turn per centimetre | 0.03280839895 TPcm |
| turn per foot to turn per metre | 3.280839895 TPM |
| turn per foot to turn per inch | 0.08333333333 TPI |
Frequently asked questions
How many turns per centimetre are in 1 turn per foot?
1 TPF = 0.03280839895 TPcm.
How do I convert turns per foot to turns per centimetre?
Multiply the value in TPF by 0.03280839895, or divide it by 30.48. For example, 15 TPF × 0.03280839895 = 0.4921259843 TPcm.
Is the TPF to TPcm conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Turns per Foot to Turns per Centimeter (TPF to TPcm). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-twist/turns-per-foot-to-turns-per-centimeter/
IEEE
Scientific Converters, "Convert Turns per Foot to Turns per Centimeter (TPF to TPcm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-twist/turns-per-foot-to-turns-per-centimeter/