Percentage, change, increase, decrease, and fraction tools. Browse our free percentage tools below — all calculators are instant, accurate, and require no sign-up.
Fraction to Percentage Converter — Convert any fraction to a percentage instantly. Enter the numerator and denominator to calculate the percentage using (numerator/denominator) × 100.
Percentage Calculator — Calculate what a percentage of any number is instantly. Enter a value and percentage to find the result using the formula result = (value × percentage) / 100.
Percentage Change Calculator — Calculate the percentage change between two values. Find how much a number increased or decreased as a percentage using the formula ((new-old)/old)×100.
Percentage Decrease Calculator — Calculate the result after decreasing a number by a given percentage. Uses the formula result = value × (1 − pct/100) for instant discount and reduction results.
Percentage Difference Calculator — Calculate the percentage difference between two values using the symmetric formula: diff = |a−b| / ((a+b)/2) × 100. Compare two numbers fairly.
Percentage to Fraction Converter — Convert any percentage to a simplified fraction instantly. Enter a percentage and get the reduced fraction using GCD simplification. Free online tool.
Percentage Increase Calculator — Calculate the result after increasing a number by a given percentage. Uses the formula result = value × (1 + pct/100) for instant percentage increase results.