Math Calculators
Free math calculators: scientific and simple calculators, percentages, fractions, averages, factors, GCF and LCM. Clear answers with no sign-up.
9 Calculators
All Math Calculators
Math Calculators Explained
For free-form sums, the Scientific Calculator handles trigonometry in degrees or radians, logarithms, powers and roots, factorials, memory and even derivatives and integrals, while the Simple Calculator keeps just the everyday keys for quick totals and percentages. Both keep a history of your recent calculations in your browser.
Most everyday maths is percentages, fractions and averages: a discount in a shop, a recipe that needs two thirds of a cup, a test score or a list of prices. Our Percentage Calculator covers five common questions in one place, from what is X% of Y to percent change. The Fraction Calculator adds, subtracts, multiplies and divides fractions and mixed numbers and always gives the simplest answer, and the Fraction to Decimal Calculator changes fractions into decimals and back.
The Average Calculator finds the mean, median, mode and range of any list of numbers, the Factor Calculator lists the factors of a number, its prime factorization, and the GCF and LCM of several numbers, and the GCF Calculator finds the greatest common factor of up to ten numbers with the working shown and factors the GCF out of an expression, and the LCM Calculator finds the least common multiple four ways and lists the common multiples. Each one shows the working, so you can check the sum and learn how it is done. Every calculation runs in your browser, so nothing you type is stored or sent anywhere.
Popular math calculators include Scientific Calculator, Percentage Calculator, Fraction Calculator and Average Calculator.
Frequently Asked Questions
Are the math calculators free to use?
Yes. Every math calculator on CalculatorEver is free, with no signup. The calculation happens in your browser.
How do I work out a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 80 is 80 × 15 ÷ 100 = 12. The Percentage Calculator does this in its first tab, X% of Y.
How do I add fractions with different denominators?
Find a common denominator, change each fraction to use it, add the top numbers and simplify. For example, 1/2 + 1/3 = 3/6 + 2/6 = 5/6. The Fraction Calculator shows these steps.
What is the difference between mean, median and mode?
The mean is the total divided by how many numbers there are. The median is the middle number when they are in order, and the mode is the number that appears most often. The Average Calculator gives all three.
How do I find the GCF and LCM of two numbers?
The GCF is the biggest number that divides both, and the LCM is the smallest number both divide into. For 12 and 18 the GCF is 6 and the LCM is 36. The GCF Calculator, the LCM Calculator and the Factor Calculator work them out for you.
