Free Engineering Calculators
15 browser-based calculators for piping, valve and steam engineering — each one shows its equations and cites the standard it implements (Crane TP-410, IEC 60534, API 520, ISO 5167, IAPWS-IF97). No sign-up; results can be opened directly in the SimuPipe simulator.
Flow & Pressure Drop
Friction Loss Calculator
Darcy-Weisbach (Colebrook-White) and Hazen-Williams pressure drop with pipe schedules, fluid presets and Crane TP-410 fittings.
Pipe Sizing Calculator
Pick a pipe diameter from velocity limits and the schedules actually available.
Reynolds Number Calculator
Laminar, transitional or turbulent — flow regime from velocity or flow rate with fluid presets.
Orifice Plate Calculator
ISO 5167 orifice flow measurement with the Reader-Harris/Gallagher discharge coefficient.
Valves
Steam & Heat
Steam Tables
IAPWS-IF97 saturated, subcooled and superheated steam properties from temperature or pressure.
Flash Steam Calculator
Flash steam released when condensate is let down to a lower pressure.
Condensate Load Calculator
Steam-trap condensate loads for warm-up, running and process-heating duty.
Boiler Efficiency Calculator
Direct and indirect method boiler efficiency with 13 fuel presets and a CO₂ estimate.
Insulation Thickness Calculator
Multi-layer pipe insulation: heat loss, interface and surface temperatures, required thickness and axial cooling.
Air & Gas
Pipe Condensation Calculator
Will warm humid air condense in a cold pipe? NTU heat transfer for blower lines and outdoor ductwork.
Compressed Air Moisture Calculator
Condensate at the aftercooler and dryer stages, with pressure and atmospheric dew points.
Gas Flow Converter
ACFM, Nm³/h, Sm³/h, SCFM and kg/h with explicit reference conditions for 11 gases.
Converters
Engineering Reference Tables
The data behind the calculators — pipe schedules and weights, roughness, Hazen-Williams C, Cv/Kv, Crane K-factors and flange dimensions.
Need the whole network, not one pipe?
SimuPipe solves flow, pressure drop and sizing across a complete piping system in your browser — loops, pumps, control valves and compressible gas included.