ScienForge

Work out the number, then understand it

46 calculators for electronics, physics, chemistry and mathematics. Every one shows the formula it used, a worked example, and where the model stops being a good description of reality.

Chemistry5

Converters2

Electronics15

Finance2

Health and fitness4

Mathematics8

Physics10

Browse by subject

Electronics

Circuit values, component sizing and the arithmetic you do at a bench.

15 calculators

Physics

Mechanics, waves, optics and thermodynamics from a first-year course.

10 calculators

Chemistry

Solutions, gases and stoichiometry with the units kept honest.

5 calculators

Mathematics

Algebra, geometry, statistics and a function plotter.

8 calculators

Converters

Units, number bases and notation, converted both ways.

2 calculators

Health and fitness

Body composition, energy expenditure and training numbers.

4 calculators

Finance

Interest, loans and savings growth over time.

2 calculators