Free online math calculators with instant results and step-by-step explanations.
What is X% of Y? X is what % of Y? X is Y% of what? Three modes in one tool.
Calculate the percentage increase from one value to another.
Calculate the percentage decrease from one value to another.
Enter original price and discount percentage to find the sale price and savings.
Calculate profit margin percentage from cost and revenue.
Calculate selling price from cost and markup percentage.
Calculate tip amount, total bill, and per-person split.
Add, subtract, multiply, and divide fractions. Auto-simplifies results.
Calculate mean, median, mode, range, and more from a set of numbers.
Solve proportions and simplify ratios to their lowest terms.
Find the square root of any number. Identifies perfect squares.
Calculate X raised to the power of Y. Supports negative and decimal exponents.
Calculate log base N of X. Supports ln, log10, log2, and custom bases.