Math Calculators
Solve everyday and classroom math: percentages, fractions, averages, standard deviation, random numbers and scientific expressions.
Math Calculators list
Percentage Calculator
Find X% of Y, what percent one number is of another, and percent change.
Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers.
Scientific Calculator
Trig, logarithms, exponents, roots and factorials in your browser.
Average Calculator
Mean, median, mode and range of any list of numbers.
Random Number Generator
Generate random integers or decimals in any range.
Standard Deviation Calculator
Sample and population standard deviation and variance.
Choosing the right math calculator
Use the Percentage Calculator for anything expressed “per hundred” — a share of a total, a markup or a percent change. The Fraction Calculator keeps answers exact as simplified fractions and mixed numbers, which matters in recipes, woodworking and homework where decimals would round.
For data, start with the Average Calculator to see the mean, median and mode, then use the Standard Deviation Calculator to measure how spread out the values are. The Scientific Calculator handles everything else: exponents, roots, trigonometry in degrees or radians, logarithms and factorials.
How results are calculated
Every math tool evaluates its formula directly in your browser with tested code. Expressions are parsed by a dedicated parser rather than executed as code, and results are rounded only for display so small floating-point artifacts such as 0.30000000000000004 never appear.