Calculate with Precision

Convert between Pa, kPa, bar, psi, atm, mmHg, m H₂O

Convert between m³/s, m³/h, m³/day, L/s, L/min, GPM

Convert between m, mm, cm, km, inch, ft, yard, mile

Calculate circle area given diameter

Calculate volume and surface area of a cylinder

Calculate volume of cylindrical or rectangular tanks

Calculate flow rate from velocity and pipe area (Q = A × v)

Calculate flow velocity from flow rate and pipe diameter

Calculate Reynolds number to determine laminar or turbulent flow

Energy balance between two points in a fluid system

Convert pressure (bar, kPa, psi) to head (m H₂O)

Convert head (m H₂O) to pressure (bar, kPa, psi)

Calculate head loss using Hazen-Williams equation

Calculate head loss using Darcy-Weisbach equation

Calculate Darcy friction factor from Reynolds number and pipe roughness

Calculate flow velocity and discharge in open channels

Recommend pipe diameter from flow rate and velocity limits

Calculate pump power from flow, head, and efficiency

Predict pump performance at different speeds using affinity laws

Nominal pipe diameter (DN) to actual dimensions reference

Calculate pressure surge from sudden valve closure

Calculate ILI from CARL and UARL for NRW benchmarking

Estimate leakage from Minimum Night Flow analysis in a DMA

Hazen-Williams C-values and absolute roughness for common pipe materials

Calculate voltage, current, or resistance (V = I × R)