Convert Turns per Centimeter to Turns per Foot (TPcm to TPF)
1 turn per centimetre (TPcm) = 30.48 turns per foot (TPF). 1 TPF = 0.03280839895 TPcm. Example: 15 TPcm = 15 × 30.48 = 457.2 TPF.
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1 TPcm = 30.48 TPF
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk turn per centimetre to turn per foot converter to paste a column from Excel.
How to Convert Turn per Centimeter to Turn per Foot
- 1 TPcm = 30.48 TPF
- 1 TPF = 0.03280839895 TPcm
- Example: convert 15 TPcm to TPF: 15 TPcm = 15 × 30.48 TPF = 457.2 TPF
Formula
TPF = TPcm × 30.48
Derivation from SI units:
- 1 turn per cm = 100 turns per metre
- 1 turn per foot = 1 turn per 0.3048 m = 3.280839895 TPM (exact)
- 1 TPcm = 100 TPM ÷ 3.280839895013 TPM per TPF = 30.48 TPF
Both units are defined exactly, so the factor is exact. Turn per Centimeter definition: turn per centimetre; Turn per Foot definition: turn per foot.
Worked examples
- A reading of 4 TPcm converts to 121.92 TPF.
4 TPcm × 30.48 = 121.92 TPF - A value of 8 TPcm is 243.84 TPF.
8 TPcm × 30.48 = 243.84 TPF
Turn per Centimeter to Turn per Foot conversion table
| Turns per Centimeter (TPcm) | Turns per Foot (TPF) |
|---|---|
| 1 TPcm | 30.48 TPF |
| 2 TPcm | 60.96 TPF |
| 3 TPcm | 91.44 TPF |
| 4 TPcm | 121.92 TPF |
| 5 TPcm | 152.4 TPF |
| 6 TPcm | 182.88 TPF |
| 8 TPcm | 243.84 TPF |
| 10 TPcm | 304.8 TPF |
| 12 TPcm | 365.76 TPF |
| 15 TPcm | 457.2 TPF |
Where it's used
Turns per Centimeter are used for filament and ply twist, while turns per foot appear in cords, ropes and tyre cords. Both measure yarn twist (turns per unit length), so the conversion is a fixed factor.
Turn per Centimeter to other yarn twist units
| Conversion | 1 TPcm equals |
|---|---|
| turn per centimetre to turn per foot | 30.48 TPF |
| turn per centimetre to turn per metre | 100 TPM |
| turn per centimetre to turn per inch | 2.54 TPI |
Frequently asked questions
How many turns per foot are in 1 turn per centimetre?
1 TPcm = 30.48 TPF.
How do I convert turns per centimetre to turns per foot?
Multiply the value in TPcm by 30.48. For example, 15 TPcm × 30.48 = 457.2 TPF.
Is the TPcm to TPF conversion exact?
Yes. Both units are defined exactly, and 1 TPcm is exactly 30.48 TPF.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
- 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".
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 Centimeter to Turns per Foot (TPcm to TPF). Retrieved October 25, 2026, from https://scientificconverters.com/yarn-twist/turns-per-centimeter-to-turns-per-foot/
IEEE
Scientific Converters, "Convert Turns per Centimeter to Turns per Foot (TPcm to TPF)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/yarn-twist/turns-per-centimeter-to-turns-per-foot/