# Converter for Water Hardness — Wasserhärte Konverter

> Wasserhärte Konverter (iPhone/iPad app by Gerhard Lentschik.)

- Source: https://appshunter.io/ios/app/converter-for-water-hardness/id1466872050 (this page in markdown: same URL + `.md`)
- Developer: [Gerhard Lentschik](https://appshunter.io/developer/629988041)
- Category: Utilities, Lifestyle
- Price: Free (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 26.0 · 7 MB
- Languages: American English, German (Germany)
- Released: 2019-06-07
- Data updated: 2026-08-03
- User reviews in markdown: https://appshunter.io/ios/app/converter-for-water-hardness/id1466872050/reviews.md

## What is Converter for Water Hardness?

The easy way to convert water hardness values.

Water Hardness Converter allows you to convert water hardness between all common international units quickly and accurately.

Whether you need the correct value for your coffee machine, aquarium, swimming pool, water softener or laboratory work, this app provides reliable conversions in seconds.

Different countries use different water hardness scales. Simply enter one value and the app automatically calculates all other supported units.

Features
• Convert between all major water hardness units
• German degrees (°dH)
• French degrees (°fH / °f)
• English degrees (°e)
• American hardness (ppm / mg/l CaCO₃)
• Millimoles per litre (mmol/l)
• Instant calculations
• Clean and intuitive interface
• Accurate and reliable conversions

Ideal for:
• Coffee machines and espresso makers
• Water softeners and filtration systems
• Aquariums and fish tanks
• Swimming pools and spas
• Heating systems
• Laboratories and education

Keep all important water hardness values at your fingertips with Water Hardness Converter.


## Version history (last 5 releases)

### 26.0 — 2026-07-30

• Modernized user interface
• Improved presentation of conversion results
• Better usability on iPhone and iPad
• Performance and stability improvements
• Minor design enhancements and bug fixes

### 2.0 — 2024-12-03

new iPhone ans iPad includes

### 1.2 — 2021-10-11

The game can now also be used with the 9th generation iPad

### 1.1 — 2019-10-07

Bugfix

### 1.0 — 2019-06-06

No release notes.

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## More apps by Gerhard Lentschik

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- [five  equal](https://appshunter.io/ios/app/five-equal/id946460526)

All apps by Gerhard Lentschik: https://appshunter.io/developer/629988041

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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 2026-08-03.*