Tools › Units

Units

5 tools in 4 sections. Each tool page shows the method with the numbers substituted, its references and the published examples it reproduces.

Conversion 1

Calculators 2

  • Formula with Units A unit-aware calculator: type variables with values in any mix of SI and US customary units (kN, lbf, slug, ft/s, deg …), a formula in plain syntax, and the tool…
  • Unit Calculator Pad A multi-line scratch pad for calculations with units: type lines such as F = 12 kN, A = 0.5 in^2, stress = F / A in MPa, L = 3 ft + 4 in or x = sqrt(2 * 9.81 m/s^2 * 10…

Learning 1

  • Units and Sig Figs Tutor A teaching tool for unit conversion and significant figures. Factor-label conversion: type a quantity and a target unit (60 mi/h to m/s, 14.7 lbf/in² to kPa, 1 Btu to J)…

Tables and Lookups 1

  • Engineering Constants and Tables A searchable reference of the tables an engineer reaches for, every row from a public-domain government source and cited on the row: the 452 conversion factors of NIST…