Unit Converter
Convert length, mass, temperature, pressure, torque, force, volume, speed/feed rate, density, and thread pitch ↔ TPI — built for CNC, 3D printing, and general engineering work.
> CONVERTS TO_
> FORMULAS_
- Length / Mass / Pressure / Torque / Force / Volume / Speed / Density — fixed multiply-by-factor conversions (NIST SP 811 Appendix B, exact defined constants: e.g. 1 in = 25.4 mm, 1 lb = 0.453592 kg)
- Temperature — °F = °C × 9/5 + 32 · K = °C + 273.15 (affine, not a simple multiply)
- Thread Pitch ↔ TPI — TPI = 25.4 ÷ pitch(mm), and the reverse: pitch(mm) = 25.4 ÷ TPI
⚠ DISCLAIMERFor engineering/reference use only. Conversion factors are exact defined constants, but always verify critical tolerances, fastener specs, and safety-relevant values against the applicable standard or spec before relying on them. Scott is not a licensed engineer.Sources: NIST SP 811 — Appendix B: Conversion Factors · Fastenere — Thread Pitch vs. TPI