Free · formula-visible · US + metric

Pump Calculators

Free hydraulic and pump-sizing calculators — each shows its formula, its units, and a worked example. US and metric.

41 tools available No sign-up · no black-box answers
Troubleshooting Mean Time Between Repairs Calculator Calculate population Mean Time Between Repairs (MTBR), machine count, repair count, or reporting interval by entering the other… Open calculator Pump Selection Belt-Drive Pulleys Calculator Analyze an ideal two-pulley belt drive. Enter any three of high-speed pulley diameter, low-speed pulley diameter, high shaft… Open calculator Pump Selection Velocity in in/sec Peak to Displacement in Mils Peak-to-Peak Calculator Convert between peak vibration velocity in in/sec, peak-to-peak displacement in mils, and frequency in CPM. Enter any two… Open calculator Pump Selection Velocity in in/sec Peak to Acceleration in G’s Calculator Convert between peak vibration velocity in in/sec, peak acceleration in g, and frequency in CPM. Enter any two… Open calculator Pump Selection Acceleration in G’s to Displacement in Mils Calculator Convert between peak acceleration in g, peak-to-peak displacement in mils, and vibration frequency in CPM. Enter any two… Open calculator Power & Energy Torque with Horsepower and Speed Calculator Calculate torque, shaft horsepower or power, or rotational speed. Enter any two of T, HP or P, and… Open calculator Pump Selection Shaft Shear Stress Calculator Calculate nominal shaft shear stress, horsepower, rotational speed, or solid-shaft diameter. Enter any three of Ss, HP, N,… Open calculator Pump Selection Peripheral Velocity of an Impeller Calculator Calculate impeller peripheral velocity, rotational speed, or outside diameter. Enter any two of V, N, and D to… Open calculator Hydraulics Velocity to Flow Calculator Convert fluid velocity to volumetric flow, flow rate to pipe velocity, or determine pipe inside diameter. Enter any… Open calculator Hydraulics Pressure to Head Calculator Convert pressure to fluid head, head to pressure, or determine specific gravity. Enter any two of P, H,… Open calculator