# Well Pump TDH Sizer — Well Pump Sizing Calculator

> Well Pump Sizing Calculator (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/well-pump-tdh-sizer/id6761447642 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities, Productivity
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: English
- Released: 2026-04-02
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/well-pump-tdh-sizer/id6761447642/reviews.md

## What is Well Pump TDH Sizer?

Drilling a new well and need to pick the right pump horsepower? Undersized pumps cannot deliver enough pressure uphill. Oversized pumps waste electricity and burn out faster. This calculator computes total dynamic head and recommends the correct submersible pump HP for your well.

Enter well depth, static water level, drawdown, pipe length, pipe diameter, flow rate in GPM, and discharge pressure. Get pumping water level, friction loss (Hazen-Williams), pressure head, total dynamic head (TDH), calculated HP, and recommended standard motor HP.

WHAT IT CALCULATES:
- Pumping water level (static + drawdown)
- Pipe friction loss using Hazen-Williams formula
- Pressure head from discharge PSI
- Total Dynamic Head (TDH) in feet
- Required horsepower at 60% efficiency
- Nearest standard motor HP recommendation

PIPE SIZES:
- 1 inch through 4 inch Schedule 40
- Actual internal diameter for accurate friction loss

KEY FEATURES:
- Hazen-Williams friction loss calculation
- Standard HP recommendations (0.5 to 10 HP)
- Works completely offline
- No account or login required

Built for well drillers, pump installers, plumbers, and rural homeowners.


## Version history (last 3 releases)

### 1.0.2 — 2026-06-28

Added a More Pro Tools section to discover related field calculators.

### 1.0.1 — 2026-04-13

Bug fixes and performance improvements.

### 1.0 — 2026-04-02

No release notes.

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All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858

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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 2026-07-08.*