Online calculators
Percentages, discounts, margins, basic statistics and compound interest, with formula and example always visible.
Tools in this category
Percentage Calculator
Calculates the percentage of an amount.
Percentage Increase Calculator
Calculates the % change between two values.
Percentage Difference Calculator
Calculates the % difference between two values.
Discount Calculator
Calculates the price after a discount.
Margin Calculator
Calculates the profit margin.
Markup Calculator
Calculates the markup over cost.
Rule of Three Calculator
Solves a direct rule of three.
Average Calculator
Calculates the average of a list of numbers.
Median Calculator
Calculates the median of a list of numbers.
LCM Calculator
Calculates the least common multiple.
GCD Calculator
Calculates the greatest common divisor.
Compound Interest Calculator
Calculates compound interest growth.