Fluid Properties & Statics

Density, dynamic/kinematic viscosity, thermal conductivity, specific heat, and Prandtl number for water, air, ethylene glycol 50%, engine oil, and seawater — interpolated from standard data tables.

Calculate Reynolds number for internal pipe flow; classifies flow as laminar, transitional, or turbulent.

Calculate Reynolds number for external flow over flat plates, cylinders, and spheres; classifies boundary-layer regime and drag behaviour.

Calculate flow rate, velocity, or area using the continuity equation for incompressible flow.

Solve for pressure, velocity, or elevation using Bernoulli's equation along a streamline.

Calculate pressure at depth in a static fluid using hydrostatic pressure equation.

Calculate the resultant force on a submerged plane surface and locate the center of pressure — for rectangular, circular, and triangular surfaces at any inclination.

Convert dynamic viscosity μ and kinematic viscosity ν across all common unit systems (Pa·s, cP, P, cSt, St, ft²/s …) and cross-convert between the two using fluid density.

Calculate volumetric flow rate in a pipe given velocity and cross-sectional area.

Calculate pressure difference from manometer height difference and fluid density.

Calculate buoyant force on a submerged object using Archimedes' principle.

Calculate exit velocity from a tank using Torricelli's theorem (ideal case).

Calculate flow velocity from Pitot tube pressure difference measurement.

Calculate velocity head from flow velocity using V²/(2g).

Calculate mass flow rate from density and volumetric flow rate.

Calculate force due to surface tension along a contact line or perimeter.

Calculate the height of liquid rise in a capillary tube due to surface tension.

Calculate gas density ρ = P/(RT) from absolute pressure and temperature. Includes presets for air, N₂, O₂, CO₂, H₂, He, CH₄, and steam.

Calculate specific gravity SG = ρ/ρ_ref versus water or air; determine float/sink behaviour and API gravity for petroleum products.

Calculate GM = KB + BM − KG for rectangular and circular floating bodies to assess small-angle stability. Outputs KB, BM, KM, BG, displaced volume, and stability classification.

Calculate bulk modulus K = ΔP/|ΔV/V₀|, compressibility β = 1/K, and speed of sound c = √(K/ρ) — from direct K input or from pressure and volume strain.

Calculate cavitation number σ = (P − Pv) / (½ρV²) and NPSH to predict vapor bubble formation. Includes water vapor pressure table and device-specific risk thresholds.

Calculate flow work (PV work) in open systems.

Calculate dynamic pressure q = ½ρV² and the full Bernoulli pressure decomposition.

Calculate area ratio and its effect on flow properties.

Volume at any liquid level for vertical (flat, cone, hemispherical, ellipsoidal heads), horizontal cylindrical, and rectangular tanks. Strapping table, fill time, contents mass, surface area, and multi-unit output.

Select minimum ASME B16.5 pressure class (150# to 2500#) for a given design pressure and temperature, or find maximum allowable pressure for a given class. Covers 9 material groups: CS, low-temp CS, 1.25Cr, 2.25Cr, and austenitic SS 304/316/304L/316L. Full interpolated P-T table included.

Moist-air properties from dry-bulb + any second property (RH, wet-bulb, dew point, or humidity ratio). Outputs enthalpy, humidity ratio, specific volume, density, and comfort zone.