Measurement Formulas & Conversions

Here at MDS of Michigan, we often receive requests regarding different industry formulas, so we have put together the table below to serve as a quick and easy reference. For further assistance, request information to get in touch with our knowledgeable staff.

HP = kW x 1.34 kW = HP x 0.746
in = mm ÷ 25.4 mm = in x 25.4
lb = kg x 2.205 kg = lb x 0.454
lb-in = Nm x 8.85 Nm = lb-in x 0.113
Quart = Liter x 1.057 Liter = Quart x 0.946
HP = T(lb-in) x RPM T(lb-in) = HP x 63025
63025 RPM
HP = T(lb-ft) x RPM T(lb-ft) = HP x 5252
5252 RPM
HP(lift) = Wgt(lb) x FPM HP(Slide) = Wgt(lb) x µ x FPM
33000 x EFF 33000 x EFF
FPM = 0.2618 x Dia(in) x RPM RPM = FPM x 3.820
Dia(in)
HP(3ph-motor) = 1.732 x V x I x PF x EFF
746