Unit Conversion

SI base units: m (length), kg (mass), s (time), A (current), K (temp), mol (amount), cd (luminosity).

CGS: cm, g, s. 1 N = 10⁵ dyne; 1 J = 10⁷ erg.

Always multiply by 1 in disguise: e.g., (1 m / 100 cm) to cancel units.

Derived units: N = kg·m/s², J = N·m, Pa = N/m², W = J/s.