Calculate lithium-ion and LiFePO4 battery pack S/P configuration, nominal voltage, C-rate, continuous discharge current, Peukert capacity, and thermal dissipation.

Calculate lithium battery pack configuration (series/parallel), nominal & peak voltages, Wh capacity, internal resistance, voltage sag, thermal Joule losses, C-rates, and BMS safety sizing.

Free hydrostatic pressure calculator. Compute liquid pressure at depth (P = ρgh), gauge and absolute pressure in kPa, PSI, bar, and atmospheres.

Calculate hydrocyclone cut size d50c, water split ratio, throughput capacity, and Tromp partition curve using Plitt and Lynch-Rao semi-empirical classification models.

Calculate theoretical and actual hydraulic pump power, electric motor requirements, flow rate, pressure drop, cylinder force, and extension speed. Free, instantaneous, zero-dependency browser-based utility.

Calculate hydraulic jump sequent depths y2, upstream and downstream Froude numbers, head loss, jump efficiency, and USBR classification for rectangular open channels.

Calculate hydraulic cylinder extension and retraction force (tonnage/kN), piston velocity, stroke cycle times, fluid displacement volume, and pump motor horsepower.

Compute push force, pull force, volume, and speed for single and double-acting cylinders.

Calculate required HVAC airflow in CFM from sensible heat loads, room ACH turnover, and cooling tons. Size round and rectangular ducts using the Huebscher formula.

Calculate helical compression spring rate k, Wahl curvature factor Kw, shear stress, solid height, clash allowance, buckling stability, and natural surge frequency.