About MathKit

MathKit exists because math help online should be fast, calm, and accurate — no pop-ups before you see an answer, no heavy pages, no guessing whether the formula is right.

We build every calculator the same way: pure, unit-tested math logic, clearly labeled inputs, inline validation, and a worked example you can follow. The site is fully static, so pages open instantly and calculations happen entirely in your browser.

What you'll find here

• Calculators — from percentages to quadratic equations to loan payments.
• Reference tables — multiplication tables, primes, squares, Roman numerals and more.
• Practice — quizzes and printable worksheets that work without a login.
• Guides — short, original explanations of the ideas behind the tools.

Our principles

• Correct math, always — every tool ships with verified test cases.
• No dark patterns — minimal ads (when present), never before the answer.
• Privacy by design — your inputs never leave your device.