Home›Math & Stats

Σ For every equation

Math & Stats Calculators

Statistics, geometry, chemistry and percentages. Clear answers, with every step shown.

Instant results No signup Free to use

Browse by category

Find your tool faster

01 · 8 tools

Statistics

Averages, spread and critical values for homework, labs and reports.

02 · 4 tools

Geometry

Triangles, angles and slopes — solved step by step.

03 · 4 tools

Chemistry & Physics

Equations, gas laws and decay for the science side of math.

04 · 6 tools

Percent & Conversions

Everyday percentages, goals and unit conversions.

05 · 1 tool

Algebra

Combine like terms and simplify expressions step by step.

No calculators match your search. Try a different word.

Why CalcKit?

Instant answers

Type your numbers and see results update in real time. No waiting, no reloading.

Step-by-step

Every result shows the working. See the formula, the substitution and each step.

Free forever

Every calculator is free to use. No accounts, no trials, no hidden charges.

Built to be correct

Formulas checked against standard references, so you can trust the answer.

About

About these calculators

Math & Stats covers the tools students, analysts and professionals use most — from averages and standard deviation to geometry, physics and percentages. Every calculator uses standard formulas and shows results instantly. Each tool has its own page with the method, formula and a worked example explained — so you can check every step yourself.

Explore

Other categories

Can’t find the right tool?

If there’s a calculator you need, let us know. We add new tools regularly based on community requests.

Request a calculator