Math tools you can trust —calm, fast, and accurate
From percentages to quadratic equations, MathKit gives you quick answers with step-by-step explanations — for students, teachers, and everyday life.
Popular Calculators
The tools people use most.
Percentage Calculator
Calculate percentage of a value
Quadratic Equation Solver
Solve a·x² + b·x + c = 0 with the quadratic formula
Compound Interest Calculator
A = P × (1 + r/100)^t, compounded annually
Triangle Area Calculator
Area of a triangle from base and height
Fraction Calculator
Convert a fraction to its decimal value
Mean Calculator
Arithmetic mean of a data set
Date Difference Calculator
Days between two dates
Pythagorean Theorem Calculator
Hypotenuse of a right triangle
Explore by Category
Find exactly what you need — organized by topic.
Basic Math
Addition, subtraction, multiplication, division and more.
Fractions & Decimals
Convert, compare, and calculate with fractions and decimals.
Percentages
Find percentages, increases, decreases, and discounts.
Geometry
Area, perimeter, volume, and surface area calculators.
Algebra
Solve equations, factor expressions, and simplify terms.
Statistics
Mean, median, mode, standard deviation, and probability.
Finance
Loan, interest, tax, and investment calculators.
Trigonometry
Sin, cos, tan, inverse functions, and right triangles.
Math Tables
Multiplication, addition, squares, cubes, factors, prime numbers and more — quick reference tables for daily practice.
Browse tablesPractice
Timed quizzes, topic tests, and printable worksheets to sharpen your skills.
Start practicingGuides
Plain-English concept guides on fractions, percentages, geometry, and more — with worked examples.
Read guides