Math Calculators & Solvers
Calculators for school, college and work: from fractions and percentages to equations, matrices and statistics. Many show the working so you can check each step.
All 51 math tools
Grouped by what they do.
Calculators
4 toolsGeneral-purpose calculators.
- Basic Calculator A desk calculator that never drifts: exact decimals, % that works, and a paper tape.
- Scientific Calculator Type or tap: trig, logs, roots and constants, with exact answers when they exist.
- Graphing Calculator Plot equations, curves and regions, then trace them, slide them and share them.
- Big Number Calculator Every digit exact: huge sums, products, powers, roots and factorials.
Numbers & arithmetic
21 toolsWork with numbers, fractions and factors.
- Math Worksheet Generator Printable maths worksheets and answer keys for nine primary skills, made in your browser.
- Multiplication Table Generator Any times table, a highlighted multiplication chart and a timed quiz, printable as PDF.
- Prime Factorization & Factors Calculator 360 = 2³ × 3² × 5 — with the factor tree, the ladder and every factor.
- Ratio & Proportion Calculator Simplify, solve, scale and share ratios — with every step shown.
- LCM & HCF (GCD) Calculator HCF and LCM with the working shown three ways — prime factors, ladder and Euclid.
- Significant Figures Calculator Counts sig figs digit by digit, rounds correctly and applies the rules to + − × ÷.
Show all 21 Show fewer Numbers & arithmetic tools
- Number Base Converter Binary, octal, decimal, hex and every base to 36 — exact, with the working shown.
- Scientific Notation Calculator Standard form ⇄ a × 10ⁿ, E notation and SI prefixes — plus + − × ÷ with the steps.
- Fraction Calculator Exact fraction answers with the working shown — LCD, cross-cancelling and all.
- Roman Numeral Converter 1994 ⇄ MCMXCIV — with a strict notation check, dates and a full chart.
- Square Root & Cube Root Calculator Roots to any precision, simplified radicals with steps, and every complex root.
- Decimal to Fraction Converter Decimals, repeating decimals, fractions and percents — converted exactly, with the method.
- Logarithm & Antilog Calculator log, ln and log_b to high precision — with change of base, log laws and log tables.
- Number to Words Converter 12,34,567 → twelve lakh thirty-four thousand … — and back, exactly.
- Long Division Calculator Long division written out step by step, in the US/UK or Indian layout.
- Prime Number Checker & Generator Is it prime? Plus factors, next primes, the nth prime, π(x) and twin primes.
- Long Multiplication Calculator Column, grid or lattice multiplication written out with every carry.
- Order of Operations Calculator (BODMAS & PEMDAS) BODMAS/PEMDAS one step at a time, in exact fractions, with every rule named.
- Percent Error Calculator How far a measurement is from the accepted value — with the working shown.
- Rounding Calculator Decimal places, sig figs or any multiple — every rounding mode side by side.
- Exponent Calculator Exact powers, radical forms, bˣ = y solved and the exponent laws explained.
Algebra & equations
5 toolsSolve and simplify equations and expressions.
- Quadratic Equation Solver Any rearranged quadratic solved exactly three ways, with discriminant, vertex and graph.
- System of Equations Solver Linear systems in exact fractions — six methods, every step, and a graph for two unknowns.
- Factoring Calculator (Factor, Expand & Simplify) Complete factorisation over the integers with named steps, plus expand and simplify.
- Sequence & Series Calculator (AP, GP & Pattern Finder) Arithmetic, geometric and harmonic progressions, pattern finder and exact Σ / Π.
- Equation Solver Solve for x: exact answers where they exist, every root checked, both sides graphed.
Geometry & trigonometry
10 toolsShapes, angles, coordinates and trigonometry.
- Circle Calculator One value gives the rest — plus arcs, sectors, segments and the circle’s equation.
- Area Calculator Area and perimeter of 22 flat shapes, with the formula, every step and a labelled diagram.
- Slope & Line Equation Calculator Two points, a point and slope, or an equation — every form of the line, with steps.
- Distance, Midpoint & Section Formula Calculator Distance, midpoint and section formula in 2D or 3D, with every step and a plot.
- Volume Calculator Volume of 14 solids with steps and diagrams, in litres, m³, ft³ or gallons, plus weight.
- Surface Area Calculator CSA, LSA and TSA of 14 solids with formulas, slant-height working and diagrams.
Show all 10 Show fewer Geometry & trigonometry tools
- Trigonometry Calculator Six functions and their inverses, exact values, equations and identity checks.
- Triangle Calculator Any three values give every side, angle, height, median, radius and centre — with steps.
- Unit Circle Chart & Calculator Drag the point to see (cos θ, sin θ) — and print a unit circle chart.
- Pythagorean Theorem Calculator a² + b² = c² with every step: exact surds, the converse, box diagonals and triples.
Calculus
2 toolsRates of change, areas under curves and numerical methods.
Matrices & vectors
1 toolMatrices, vectors and optimisation.
Statistics & probability
8 toolsDescribe data and test ideas with probability.
- Standard Deviation Calculator σ and s with the full working — for lists, frequency tables and class intervals.
- Mean, Median, Mode & Average Calculator Every kind of average with the working — lists, frequency tables and class intervals.
- Z-Score & Normal Distribution Calculator z-scores, normal probabilities and percentiles — with a shaded bell curve and a z-table.
- Probability Calculator Exact answers with the working — from coin tosses and dice to Bayes’ theorem.
- Permutation & Combination Calculator Exact counts with the formula and steps — and the actual arrangements for small cases.
- Scatter Plot Maker Scatter and bubble charts with trendlines, their equations and R².
- Descriptive Statistics Calculator Every summary statistic of your data, with a box plot, histogram and stem-and-leaf.
- Sample Size Calculator How many to ask or measure — for a survey, a mean or a comparison of two groups.
No math tools match these filters.
Choose “Anything” in one of the filters, or look across every category on All tools.
Math tools A–Z
D
L
M
P
S
- Sample Size Calculator
- Scatter Plot Maker
- Scientific Calculator
- Scientific Notation Calculator
- Sequence & Series Calculator (AP, GP & Pattern Finder)
- Significant Figures Calculator
- Slope & Line Equation Calculator
- Square Root & Cube Root Calculator
- Standard Deviation Calculator
- Surface Area Calculator
- System of Equations Solver
Collections with math tools
All collections →- 174 tools Students Grades, marks & exams · Essays & writing · Citations & references · 4 more
- 95 tools Engineers Electrical & electronics · Mechanical, fluids & HVAC · Civil & construction · 3 more
- 107 tools Small business & tax Invoices & billing · GST, VAT & tax · Pricing, profit & stock · 4 more
- 197 tools Developers JSON, YAML & data formats · Format, convert & run code · Encode, decode & hash · 5 more
Good to know
- All 51 tools run in your browser: what you open or paste is not uploaded.
- All of them keep working without a connection once loaded.
Other categories
All tools →- 132 tools Developer Format, validate, encode, decode.
- 40 tools Data CSV, Excel, tables, charts.
- 95 tools Text Count, clean, sort, compare.
- 92 tools Image Compress, resize, convert, crop.
- 55 tools PDF Merge, split, extract, convert.
- 35 tools Audio & Video Convert, trim, compress media.
- 56 tools Design Colours, gradients, CSS.
- 36 tools SEO Meta tags, sitemaps, schema.
- 27 tools Social Media Captions, previews, limits.
- 94 tools Finance Loans, savings, interest, tax.
- 78 tools Business Invoices, quotes, margins.
- 39 tools Legal Templates and legal maths.
- 48 tools Health BMI, calories, pregnancy.
- 45 tools Science Physics, chemistry, astronomy.
- 31 tools Engineering Electronics, electrical, mechanical.
- 29 tools Construction Materials, area, home costs.
- 80 tools Education Grades, citations, study.
- 36 tools Network DNS, headers, IPs, subnets.
- 35 tools Security Passwords, encryption, keys.
- 33 tools Converters Every unit, exact factors.
- 75 tools Utility Convert, count down, randomise.