From quick sums to equations
Work out a discount or a percentage change in seconds, simplify fractions, solve linear and quadratic equations, or compute mean, median and standard deviation of a list.
Math calculators
Calculators for everyday, school and money math: percentages, fractions, equations, statistics, geometry, loans and interest, plus a full scientific calculator. Results update as you type.
44 showing
01 Scientific Calculator Expressions, functions and a running history.math02 Percentage Calculator Percent of a value, change, discount and reverse.math03 Fraction Calculator Add, subtract, multiply and divide fractions.math04 Ratio Calculator Simplify a:b and solve a proportion.math05 Average Calculator Mean, median and mode from a list.math06 Statistics Calculator Count, range, variance and standard deviation.math07 Equation Solver Linear equations in x.math08 Quadratic Equation Solver Roots, discriminant and the nature of the solution.math09 GCD & LCM Greatest common divisor and least common multiple.math10 Prime Number Checker Deterministic test up to 64-bit integers.math11 Number Base Converter Convert between bases 2 through 36.math12 Scientific Notation Move between decimal and coefficient × 10^n.math13 Random Number Generator Cryptographic random integers and decimals.math14 Unit Converter Length, mass, temperature, data and more.math15 Date Calculator Difference between dates and shifting by an interval.math16 Aspect Ratio Simplify a pixel width and height.developer17 Pythagorean Theorem Hypotenuse from the two legs.math18 Circle Calculator Area and circumference from the radius.math19 BMI Calculator Body mass index from weight and height.math20 Simple Interest Interest = principal × rate × time.math21 Compound Interest Interest compounded over a number of periods.math22 Combinations C(n, k) without repetition.math23 Ohm's Law Leave one of volts, amps or ohms empty.math24 Loan Payment Monthly payment from principal, rate and term.math25 Tip Calculator Split a tip across people.math26 VAT Calculator Add or remove a tax rate.math27 Margin Calculator Margin, markup and profit from cost and price.math28 Hourly Wage Monthly, weekly and hourly pay from an annual amount.math29 Monthly Salary One twelfth of an annual salary.math30 Fuel Cost Cost from distance, consumption and price.math31 Pace Calculator Pace per kilometre and average speed.math32 Age Calculator Years, months and days from a birth date.math33 ISO Week Number The ISO week of a civil date.math34 Roman Numerals Convert 1–3999 to and from Roman numerals.math35 Prime Factors Factor an integer into primes.math36 Fibonacci The exact nth Fibonacci number.math37 Bitwise Calculator AND, OR, XOR and 32-bit NOT.math38 Angle Converter Degrees, radians and gradians.math39 Triangle Area Area from base and height.math40 Cylinder Volume Volume from radius and height.math41 Modulo Non-negative remainder, including negatives.math42 Logarithm Logarithm in a chosen base.math43 Golden Ratio The larger part of a length.math44 Leap Year Gregorian leap-year rule.math
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FAQ
Frequently asked questions
Which math calculators are available?
A scientific calculator, percentage and fraction calculators, linear and quadratic equation solvers, statistics, geometry, number bases, primes, logarithms and more.
Are there financial calculators?
Yes: loan, simple and compound interest, VAT, margin, tip, hourly wage and monthly salary calculators.
Are the calculators free?
Yes, all of them are free and work without registration.