Math Calculators
Basic, scientific, percentage, fraction and average calculators for homework and quick checks.
Basic CalculatorA fast online calculator for everyday arithmetic — add, subtract, multiply and divide.Scientific CalculatorOnline scientific calculator with trig, logarithms, powers, roots and constants.Percentage CalculatorSolve any percentage problem — percent of a number, what percent, and percent change.Fraction CalculatorAdd, subtract, multiply and divide fractions and get the answer in lowest terms.Average CalculatorCalculate the mean, median, mode, range and sum of a set of numbers.
Answers
Math calculator FAQs
What math calculators are available?
Use the basic calculator for quick sums, the scientific calculator for advanced functions, and dedicated percentage, fraction and average calculators that show every step.
How do I calculate a percentage?
Multiply the number by the percent and divide by 100 — 20% of 150 is 150 × 20 ÷ 100 = 30. The percentage calculator also handles percentage change and "what percent of" problems.
When should I use a scientific calculator?
Use the scientific calculator for trigonometry, logarithms, exponents, roots and constants like pi — anything beyond basic add, subtract, multiply and divide.
How do I add, simplify or convert fractions?
The fraction calculator adds, subtracts, multiplies and divides fractions, reduces them to lowest terms, and converts between fractions and decimals — showing the working each time.
How do I find an average?
Add all the values and divide by how many there are. The average calculator also reports the median and range of your data set.