# Fluid Mechanics Calculator — Solve any variable · SI & USCS

> Fluid mechanics and civil engineering parameter calculator with 97 tools in SI and USCS units. (iPhone/iPad app by V PUGAZHENTHI.)

- Source: https://appshunter.io/ios/app/fluid-mechanics-calculator/id526974981 (this page in markdown: same URL + `.md`)
- Developer: [V PUGAZHENTHI](https://appshunter.io/developer/491898049)
- Category: Utilities, Education
- Price: $2.99
- Rating: 4.50/5 from 21 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.1 · 11 MB
- Languages: American English, French (France), German (Germany), Italian, European Portuguese, Chinese (Simplified, China), Latin American Spanish
- Released: 2012-05-18
- Data updated: 2026-08-21
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fluid-mechanics-calculator/id526974981/reviews.md

## What is Fluid Mechanics Calculator?

Fluid Mechanics Calculator contains 97 calculators to compute different Fluid Mechanics and Civil Engineering parameters — now with a solve-for-any-variable engine: in every calculator, choose the value you want to find and enter the rest.

Available in both USCS (Imperial Units) and SI (Metric Units).

What's new in this version:
• Filter calculators by category — pressure, open channel, pipe, groundwater, pump, and dimensionless numbers
• Solve for any variable — pick the unknown in each calculator; no more fixed inputs and outputs
• Share any calculation as an image

Features:
• 97 Fluid Mechanics and Civil Engineering calculators
• Automatic, instant results on every value and unit change
• USCS (Imperial) and SI (Metric) units throughout
• Clear formulas and definitions for every calculator

Calculator List:

Absolute Pressure
Brake Horsepower
Bernoulli Theorem for Head Loss
Bulk Modulus
Buoyant Force
Chezy Coefficient
Chezy Velocity
Compressibility
External Hydrostatic Pressure
Flow Rate
Fluid Density with Pressure
Fluid Pressure
Hydraulic Radius
Kinematic Viscosity
Liquid Phase Diffusion Coefficient
Pump Efficiency
Manning Flow Velocity
Mean Depth
Minor Losses
Net Positive Suction Head and Cavitation
Specific Gas Constant
Specific Gravity with Water Weight
Specific Gravity with Water Weight Loss
Specific Volume
Thrust Block
Water Horsepower

Acoustic Flow Meter
Bazin's Weir Flow
Broad Crested Weir
Curb Capture Flow Rate
Curb Gutter Flow Rate
French Drain Seepage Rate
Gutter Capture Efficiency
Gutter Carryover
Gutter Interception Capacity
Rectangular Weir
Rectangular Weir Discharge - Francis Equation
Orifice Flow Rate
Parshall Flume Flow Rate
Permeameter Porous Medium Flow Rate
Unconfined Aquifer Well Flow Rate
V notch Weir
Venturi Meter for Flow Rate

Hazen Williams - Fluid Flow Rate
Hazen Williams - Mean Fluid Velocity

Aluminum Pipe - Pressure Rating
Buried Corrugated Metal Pipe Thrust - Cross Sectional Area
Buried Corrugated Metal Pipe Thrust - Pipe Wall
Buried Corrugated Metal Pipe Thrust - Pressure
Ductile Iron Pipe - Pressure
Ductile Iron Pipe - Wall Thickness
Pipe Vacuum Pressure Load
Pipe Water Buoyancy Factor
Plastic Pipe - AWWA C900 Pressure Class
Plastic Pipe - Inside Diameter Controlled
Plastic Pipe - Outside Diameter Controlled
Plastic Pipe - Outside Diameter Controlled Short Term Strength
Plastic Pipe - Short Term Pressure Rating
Slotted Pipe Gutter Interception
Smooth Wall Steel Pipe - Pressure Rating
Soil Load Per Linear Length of Pipe
Restrained Anchored Pipe Stress
Pipe Soil Weight Pressure
Unrestrained Pipe Length Change

Poiseuille's Law
Stokes Law

Cauchy Number
Cavitation Number
Eckert Number
Euler Number
Fourier Number
Froude Number
Knudsen Number
Lewis Number
Mach Number
Prandtl Number
Reynolds Number
Schmidt Number
Sherwood Number
Nusselt Number
Peclet Number
Strouhal Number
Threshold Odor Number
Weber Number

Darcy Weisbach - Head Loss
Darcy's Law - Flow Rate
Darcy's Law - Flux
Darcy's Law - Hydraulic Gradient
Darcy's Law - Porosity
Darcy's Law - Saturated Soil
Darcy's Law - Seepage Velocity
Darcy's Law - Seepage Velocity and Porosity
Darcy's Law - Void Ratio

Water Hammer - Maximum Surge Pressure for a Fluid
Water Hammer - Maximum Surge Pressure for Water
Water Hammer - Maximum Surge Pressure Head
Water Hammer - Pressure Increase

## Key features

- 97 fluid mechanics and civil engineering calculators
- Supports SI and USCS (Imperial) units
- Automatic calculations with unit changes
- Wide range of parameters covered
- Civil engineering applications

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/fluid-mechanics-calculator/id526974981/reviews.md

### 1/5 — Mies!

*2021-05-20*

Keine wirkliche Hilfe für Leute die Physik nur als Nebenfach haben. Die Formeln sollten durch Legenden erklärt werden.

### 1/5 — Katastrophal übersetzt

*2014-11-20*

miserables Deutsch und trotzdem Durchflussangaben in gallon per minute erforderlich.
Keinerlei Hilfetexte für Formelzeichen.
Das Geld hätte ich sparen sollen.

### 3/5 — Great but needs English

*2013-08-09*

Great app but is all si units from what I can tell

**Developer response:** Now both SI and USCS Units are included...

## Frequently asked questions about Fluid Mechanics Calculator

### What is Fluid Mechanics Calculator?

Fluid Mechanics Calculator is a utility app offering 97 calculators for fluid mechanics and civil engineering parameters. It supports both USCS (Imperial) and SI (Metric) units, providing automatic and accurate calculations as units and values are changed.

### How many calculators are included in Fluid Mechanics Calculator?

Fluid Mechanics Calculator includes a comprehensive list of 97 calculators covering various fluid mechanics and civil engineering parameters.

### Does Fluid Mechanics Calculator support different unit systems?

Yes, Fluid Mechanics Calculator is available in both USCS (Imperial Units) and SI (Metric Units), allowing for versatile calculations.

### What types of calculations can I perform with Fluid Mechanics Calculator?

You can perform calculations for parameters such as pressure, flow rate, head loss, viscosity, pipe ratings, and various dimensionless numbers like Reynolds and Mach numbers.

### What is the price of Fluid Mechanics Calculator?

Fluid Mechanics Calculator is a paid app priced at $2.99.

### On which devices can I use Fluid Mechanics Calculator?

Fluid Mechanics Calculator is supported on iPhones and iPads.

### How often is Fluid Mechanics Calculator updated?

The latest version, 9.1, was last updated on February 27, 2025, indicating active development and regular updates.

### What is the age rating for Fluid Mechanics Calculator?

Fluid Mechanics Calculator has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 10.0 — 2026-06-22

• Solve for any variable in every fluid mechanics calculation
• Filter calculators by category

### 9.1 — 2025-02-27

Resolved an issue that prevented the latest update from being installed correctly.

### 9.0 — 2024-10-22

- updated for iOS 18
- all new interface for better user experience

### 8.1 — 2023-04-03

- fixed an issue, causing the App to crash in iPads.
 - improved interface for better performance.

### 8.0 — 2022-04-26

- Formulas are presented in a structured format for better understanding.

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All apps by V PUGAZHENTHI: https://appshunter.io/developer/491898049

## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*