Menurut hukum boyle,pv=k.besaran k memiliki dimensi

P = F/A
Mk [P] = MLT⁻²/L² = M L⁻¹ T⁻²
V=volume mk [V] = L³
Shg
[k] = [P] [V] = M L⁻¹ T⁻² × L³ = M L² T⁻²