Hydraulics and Waterworks Calc

The Hydraulics Calculator offers 94 calculators

to simplify your hydraulics, waterworks, and

civil engineering calculations — available in

both Metric (SI) and Imperial (USCS) units.

Key Features:

Smart auto-fill pickers for pipe materials,

fluid properties, channel linings, soil types,

pipe fittings, orifice/weir coefficients and

runoff coefficients

Flow regime indicators — Froude number

(Subcritical/Critical/Supercritical) and

Reynolds number (Laminar/Transitional/Turbulent)

Hydraulic jump classification

Built-in reference tables for all material

and fluid properties

General Hydraulics

- Capillary Rise

- Viscosity / Kinematic Viscosity

- Hydrostatic Pressure

- Pressure Head / Velocity Head / True Velocity Head

- Specific Energy Head / Head Loss (Bernoulli Equation)

- Total Energy (Elemental Volume of Fluid)

- Total Head of Flowing Fluid

- Average Velocity of Flow

- Summation of Forces (X direction)

Dimensionless Numbers

- Froude Number

- Reynolds Number

- Weber Number

Friction Losses

- Head Loss due to Friction (General / Darcy-Weisbach)

- Chezy Velocity / Chezy Coefficient

- Manning Flow Velocity (including pipe diameter)

- Flow Rate, Head Loss, and Pipe Diameter (Manning)

- Hazen-Williams Flow Velocity and Friction Loss

Pipe Flow and Fittings

- Head Loss across Pipe Diameter Changes

- Brightmore Equation for Pipe Contractions

- Head Loss from Pipe Fittings

- Loss Coefficient

Orifice and Fluid Flow

- Orifice Flow Rate / Coefficient of Contraction

- Initial Velocity of Fluid Jets

- Gage Pressure in Conical Tubes

- Wave Velocity in Pipes (Water Hammer)

- Pipe Material Stress

- Section Factor

Hydraulic Jumps

- Force, Momentum Change, and Head Loss

Temperature Effects on Pipes

- Stress and Length Movement due to Temperature

Culverts and Channels

- Elevation Differences (Headwater and Tailwater)

- Velocity and Flow Rates in Culverts

- Open Channel Flow — Rectangular, Triangular,

Parabolic, and Trapezoidal Channels

Circular Channels

- Cross-Sectional Area, Critical Depth,

Top Width, and Flow Rate

Weirs

- Flow Rate — Rectangular, Triangular,

Trapezoidal, and Broad Crested Weirs

Sediment and Water Movement

- Sediment Transport (Schoklitsch Formula)

- Evaporation Rate (Meyer Equation)

- Wind Factor

Rainfall and Groundwater

- Peak Discharge (Rational Formula)

- Rainfall Intensity (Steel Formula)

- Groundwater Flow (Darcy's Law)

Specialized Calculations

- Fire Demand Rate

- Gravity and Artesian Well Flow Rates

- Economic Pipe Diameter

- Venturi Flow Meter

- Power from Water Flow