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Unit Converters
Pressure, torque, power, flow, force, temperature, speed and more. 18 free tools.
Mechanical & fluid 7
Pressure converterbar, psi, kPa, inHg, inH₂O, mmHg, torr and more.Torque converterNm, ft-lb, in-lb, kgf·m and kgf·cm.Power converterkW, hp, PS, W, BTU/h, kcal/h and tons of refrigeration.Flow rate converterL/min, L/s, m³/h, US gpm, UK gpm, cfm and more.Force converterN, kN, lbf, kgf and tonnes-force.Dynamic viscosity convertercP, mPa·s, Pa·s and poise.Vacuum converter (inHg vacuum, mbar abs, % vacuum)Convert vacuum gauge readings to absolute pressure and back.
General 11
Length convertermm, inches, thou, feet, metres, miles and more.Mass / weight converterkg, lb, tonnes, US tons, stone and ounces.Area convertermm², cm², m², in², ft² and more.Volume converterlitres, m³, US and UK gallons, ft³ and more.Density converterkg/m³, g/cm³, lb/ft³, lb/in³ and lb/US gal.Rotational speed and vibration frequency converterrpm, Hz, CPM and rad/s.Linear speed converterm/s, m/min, ft/min, km/h, mph and knots.Energy converterkWh, MJ, BTU, therms, kcal and more.Temperature converter°C, °F and kelvin.Fractional inch to mm converterConvert fractions like 3/8" or 1 1/4" to mm and decimal inches.Thread TPI to pitch (mm) converterConvert threads per inch to pitch in mm and back.
Quick conversions 87
One-click pages with a conversion table for the most searched pairs.
Pressure
inHg to barbar to inHginHg to psipsi to inHginHg to kPainHg to mbarinHg to mmHgbar to psipsi to barbar to kPakPa to barkPa to psipsi to kPaMPa to psipsi to MPabar to MPambar to inH₂OinH₂O to mbarinH₂O to PaPa to inH₂OinH₂O to psipsi to inH₂OmmH₂O to PammH₂O to mbarftH₂O to psimmHg to kPakPa to mmHgmmHg to psitorr to mbarmbar to torratm to baratm to psikg/cm² to barkg/cm² to psipsi to kg/cm²ksi to MPaMPa to ksi
Temperature
Torque
Power
Flow rate
L/min to US gpmUS gpm to L/mincfm to m³/hm³/h to cfmcfm to L/sL/s to cfmcfm to L/minm³/h to L/minL/min to m³/h