# HydroCalc Plus — Head Loss Calculator Plus

> Hydraulic engineering tool for calculating pressure losses in piping systems. (iPhone/iPad app by Transparent Blue Water LLC.)

- Source: https://appshunter.io/ios/app/hydrocalc-plus/id578807688 (this page in markdown: same URL + `.md`)
- Developer: [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351)
- Category: Productivity, Utilities
- Price: $3.99 with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 34 MB
- Languages: American English
- Released: 2012-12-01
- Data updated: 2026-08-31
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hydrocalc-plus/id578807688/reviews.md

## What is HydroCalc Plus?

Professional hydraulic engineering tool for calculating pressure losses in piping systems. Essential for engineers, plumbers, and contractors designing water distribution networks.
Key Features:

Calculate friction head losses using industry-standard Hazen-Williams equation
Support for both US (ft, gpm, psi) and SI (m, lps, bar) units
Extensive pipe material library with pre-defined roughness coefficients (C-factors)
Complete fittings and valves database including elbows, tees, valves, contractions, and expansions
Inverse calculations to determine optimal pipe diameter, flow rate, or length for target head loss
Real-time results showing velocity, friction loss, minor losses, and total system head loss

What Sets Pro Apart:
Unlike basic calculators, HydroCalc Pro accounts for both major losses (pipe friction) and minor losses (fittings and valves). The app includes a comprehensive database of K-factors for various components, allowing accurate total system pressure loss calculations.
Perfect For:

Water supply system design
Irrigation network planning
HVAC piping calculations
Fire protection systems
Industrial fluid transport
Educational purposes in hydraulic engineering

Technical Capabilities:
The app considers all critical factors affecting pressure loss: flow velocity, pipe diameter, internal roughness, pipe length, and fitting configurations. Materials include PVC, polyethylene, steel, cast iron, concrete, and more with accurate C-factors ranging from 120-150.
Inverse Calculation Mode:
Unique feature allowing backward calculations - determine required pipe size for allowable head loss, maximum flow capacity, or optimal pipe length for your system constraints.
Simple, intuitive interface with instant results. No internet connection required. Professional-grade calculations in your pocket.
Note: Premium modules are available in English and Spanish.

## Key features

- Friction head loss calculation (Hazen-Williams)
- US and SI unit support
- Extensive pipe material library
- Fittings and valves database
- Inverse calculation mode
- Real-time results (velocity, losses)

## Pricing and in-app purchases

Base price: $3.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pump Power Calculator | $1.99 | one-time |
| System Curve Generator | $1.99 | one-time |
| Pipe Database | $1.99 | one-time |
| Industrial Fluids Pack | $2.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/hydrocalc-plus/id578807688/reviews.md

### 5/5 — Very useful

*2025-11-29*

I like the fitting selector and pipe material picker

## Frequently asked questions about HydroCalc Plus

### What is HydroCalc Plus used for?

HydroCalc Plus is a professional hydraulic engineering tool designed to calculate pressure losses in piping systems. It helps engineers, plumbers, and contractors in designing water distribution networks and other fluid transport systems.

### What calculation methods does HydroCalc Plus use?

HydroCalc Plus primarily uses the industry-standard Hazen-Williams equation to calculate friction head losses. It also accounts for minor losses from fittings and valves using a comprehensive K-factor database.

### Does HydroCalc Plus support different unit systems?

Yes, HydroCalc Plus supports both US customary units (feet, gallons per minute, psi) and International System of Units (meters, liters per second, bar) for comprehensive global use.

### Can HydroCalc Plus perform inverse calculations?

Yes, HydroCalc Plus features a unique inverse calculation mode. This allows users to determine optimal pipe diameter, flow rate, or length required to achieve a specific target head loss for their system.

### What kind of pipe materials are included in HydroCalc Plus?

The app includes an extensive pipe material library with pre-defined roughness coefficients (C-factors) for materials such as PVC, polyethylene, steel, cast iron, and concrete, with C-factors ranging from 120-150.

### How often is HydroCalc Plus updated?

The latest version of HydroCalc Plus is 1.2.9, and it was last updated on January 26, 2026. This indicates a commitment to ongoing development and improvements.

### Is HydroCalc Plus available on multiple devices?

HydroCalc Plus is available for iPhone, iPad, and iPod devices, making it accessible for users across Apple's mobile ecosystem.

### Does HydroCalc Plus have ads?

No, HydroCalc Plus does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

## Version history (last 5 releases)

### 1.3.1 — 2026-07-24

App previews added

### 1.3.0 — 2026-07-04

• System Curve: smoother charts, plus a new Pump Curve overlay — enter 3 points from your pump datasheet and see the operating point (Q, H) with reference lines on the chart
• Pump Power: new fluid density input for pumping fluids other than water
• Pipe Database: enter custom pipe dimensions in inches (US units)
• Industrial Pack: corrected results display in US units
• Fixed an issue where purchased modules could appear locked after restarting the app. If a module you purchased appears locked, tap "Restore Purchases" once — it will now stay unlocked.

### 1.2.9 — 2026-01-26

Navigation improvements
Bug fixes

### 1.2.8 — 2026-01-19

Added a text in more "For simulation of complex pipes networks, use FlowAnalyzer, our (EPANET) compatible app", with the link to apple app store.

### 1.2.5 — 2026-01-13

NEW: Premium Modules Available!

- System Curve - Head loss vs. flow charts for pump selection
- Pipe Database - Standard dimensions (ASME, ASTM, ISO)
- Pump Power Calculator - Size your motor with confidence
- Industrial Pack - Darcy-Weisbach for oils, glycols & custom fluids

Plus bug fixes and performance improvements.

## Apps similar to HydroCalc Plus

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## More apps by Transparent Blue Water LLC

- [HydroCalc Basic](https://appshunter.io/ios/app/hydrocalc-basic/id6752577110)
- [HydroSewer - Drainage Network](https://appshunter.io/ios/app/hydrosewer-drainage-network/id6754671899)
- [FlowAnalyzer - Water Network](https://appshunter.io/ios/app/flowanalyzer-water-network/id6754671981)
- [Pipe Hydraulic Network Viewer](https://appshunter.io/ios/app/pipe-hydraulic-network-viewer/id6754879365)
- [NPSH Calculator](https://appshunter.io/ios/app/npsh-calculator/id6756281499)

All apps by Transparent Blue Water LLC: https://appshunter.io/developer/1847968351

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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 2026-08-31.*