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All math calculators, organised by category
Choose a focused calculator from the category that matches your question. Every tool keeps the formula, result, and understandable working close together.
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Start with a subject, then choose the calculator that fits the numbers you have.
4 tools
Fractions
Convert, simplify, compare, and understand fractions in the form your problem needs.
Fraction to Decimal Calculator
Convert fractions to decimals with this fraction to decimal calculator, including mixed numbers, improper fractions, and repeats.
Decimal to Fraction Calculator
Use this decimal to fraction calculator to reduce decimals, show the algebra, and return an exact fraction or mixed number.
Simplify Fraction Calculator
Use this simplify fraction calculator to reduce fractions, find the greatest common factor, and show equivalent steps clearly.
Fraction to Percent Calculator
Convert fractions to percentages with this fraction to percent calculator, including percent to fraction and decimal conversions.
3 tools
Geometry
Find areas, perimeters, and missing sides with clear formulas for common shapes.
Area Calculator
Use this area calculator for rectangles, circles, triangles, trapezoids, and surface area with formulas, units, and clear steps.
Pythagorean Theorem Calculator
Use this Pythagorean theorem calculator to find a missing right-triangle side, angles, and clear substitutions for a, b, or c.
Perimeter Calculator
Use this perimeter calculator for rectangles, circles, triangles, and trapezoids with formulas, units, and optional area results.
2 tools
Statistics
Summarise datasets with averages, spread, and probability-focused tools.
Average Calculator
Use this average calculator to find the mean, median, mode, range, and weighted average of numbers with transparent working.
Sample Standard Deviation Calculator
Use this sample standard deviation calculator for mean, variance, range, population deviation, and sample size with clear steps.
4 tools
Algebra
Work through division, sequences, logarithms, and roots with visible reasoning.
Long Division Calculator
Use this long division calculator with steps for quotients, remainders, decimals, and a clear multiply-subtract-bring-down method.
Sequence Calculator
Use this sequence calculator to find arithmetic, geometric, number-sequence, and Fibonacci terms, sums, differences, and ratios.
Logarithm Calculator
Use this logarithm calculator with steps for natural log, common log, and any valid base, including change-of-base working.
Cube Root Calculator
Use this cube root calculator for positive and negative values, exact cubes, decimal answers, and optional nth-root calculations.
1 tool
Probability
Explore chance, distributions, and probability questions with practical inputs.
1 tool
Computing
Convert numbers between bases used in programming, computer science, and digital systems.
1 tool
Arithmetic
Break numbers into factors and use divisibility tools for everyday calculations.
2 tools
Grades
Plan weighted grades, semester averages, and the scores you need next.
2 tools
Percentages
Compare scores, changes, discounts, tax, and winning records with confidence.