Hydraulics and Waterworks Calc7.2

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

Version History - Smart auto-fill pickers for pipe materials,
fluids, soils, fittings and runoff coefficients
- Flow regime indicators — Froude, Reynolds
and Hydraulic Jump classification 7.2 May 14 - Fixed an issue where some calculators were not working properly on iPhone devices running lower iOS versions. 7.1 02/15/2025 • Optimized for iOS 18 compatibility.
• Updated interface for improved performance and usability. 7.0 01/22/2025 - The formulas are presented in a structured format for better understanding. 6.2 04/18/2022 - updated for iOS 14
- fixed an error in Peak Discharge (Rational Formula) 6.0 11/22/2020 improved user interface.
ready for your new iPhone X max 5.1 07/08/2019 all new interface with more stability
ready for you new iPhone X 5.0 04/04/2018 - ready for iPad pro
- Available in French,German,Italian, Spanish and Portuguese languages 4.0 04/01/2016 - Ready for iOS7 3.0 10/26/2013 1.0 02/19/2013