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The Formula Calculator

Formula library & solver
Sidney Thom · Reference
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App info

Developer
Sidney Thom
Category
Reference, Education
Released
Sep 23, 2026
Version
1.3.3 (Oct 19, 2026)
Price
Free
Size
9.4 MB
Requires
iOS 15.0
Age rating
4+
Languages
English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French, German, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål,…

In-app purchases

none
Current prices, App Store US.

About 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…
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