Online calculators
Solve everyday calculations in seconds: percentages, sale prices, price increases, averages and ages. Each calculator explains the formula it uses.
Percentage calculator
Find X% of a number or what percent one number is of another.Percentage increase calculator
Percent change between two values, and increases or decreases by %.Discount calculator
Sale price, savings and stacked discounts in a moment.Average calculator
Mean, median, mode and weighted average of a list of numbers.Age calculator
Exact age in years, months and days, and days until your birthday.Date calculator
Days between dates, business days, and adding days to a date.Time calculator
Hours worked, adding hours and minutes, and decimal hours.Ratio and proportion calculator
Solve proportions (rule of three) and simplify ratios.
Accurate results, explained
Every calculator updates the result as you type and accepts a dot for decimals and commas as thousands separators (1,250.75). Below each one you'll find the formula and solved examples, so you can check the result by hand if you need to.
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