The Formula Calculator
Formula library & solver
₺99,99
Formula library, solver and technical tables in one tool
Select a formula, enter the values – the app calculates the rest. Units convert automatically.
Formula Calculator is a formula library and a calculator in one. Instead of looking things up in a handbook and then calculating separately, both happen in the same view. Built for the trades, master craftsman training, engineering and study.
Over 200 formulas, including:
Geometry and areas, volume, mechanics and strength of materials, heat, fluid mechanics and pumps, electrical engineering, acoustics, hydraulics, chemistry and physics.
Use the formulas, instead of leaving everything to AI:
Periodic table (use molar mass directly), density table, building materials, formula symbols as in a technical handbook, unit converter with SI prefixes. Charts such as LogPH and h-x.
Search finds formulas, elements and groups – for example Ohm, area of a circle, alkali metals or the periodic table.
• Fully offline
• No account, no ads, no tracking
• Light and dark mode
• German and many other languages
• Saves recent calculations
Developed by a German master craftsman.
Available languages:
German, English, French, Spanish, Portuguese, Italian, Dutch, Polish, Czech, Slovak, Hungarian, Romanian, Croatian, Danish, Swedish, Norwegian, Finnish, Turkish, Russian, Ukrainian, Arabic, Hebrew, Hindi, Thai, Vietnamese, Indonesian, Chinese, Japanese, Korean
Also on Apple Watch: a simplified version for quick lookup or calculations with units.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
App languages added
The developer, Sidney Thom, 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
- Provider
- Sidney Thom
- Size
- 12.7 MB
- Category
- Reference
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 28 more
- English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French, German, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Sidney Thom
