Converter for Water Hardness
Wasserhärte Konverter
Free · Designed for iPad. Not verified for macOS.
Convert water hardness instantly! Supports all common units and delivers fast, accurate results for home, aquariums, pools, coffee machines and more.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Modernized user interface
• Improved presentation of conversion results
• Better usability on iPhone and iPad
• Performance and stability improvements
• Minor design enhancements and bug fixes
The developer, Gerhard Lentschik, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Gerhard Lentschik
- Size
- 6.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © Gerhard Lentschik