The Formula Calculator

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.