Master Unit Conversions

Build factor-label chains, cancel units step by step, and develop the core skill used in every quantitative science.

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Choose a Level

Department

One-Step

Single conversion factor. Convert between directly related units like kilometres and metres.

  • Physics
  • Chemistry

Multi-Step

Chain two or more conversion factors. Units cancel diagonally until only the target unit remains.

  • Physics
  • Chemistry

Double Units

Compound units with two dimensions, such as speed (m/s) or density (g/mL). Both numerator and denominator convert.

  • Physics
  • Chemistry

Squared & Cubed

Area and volume units. Conversion factors must be applied twice or three times — a common source of errors.

  • Physics
  • Chemistry