Calculators

Compute a percentage, ratio between values, or percent change/difference.

Compute your age in years, months, and days — and your next birthday.

Compute final price after one or two discounts, with optional VAT.

Compute the difference between two dates in days, weeks, months, and years.

Convert major currencies using a custom rate or our static estimate.

Convert between length, weight, temperature, area, and volume.

Compute mean, median, min, max, range, count, and sum for a list of numbers.

Compute sample or population standard deviation and variance for a list of numbers.

Compute a single event, complement, both events, either event, or a conditional probability.

Compute total hours and minutes between two times, minus breaks, with overnight support.

Compute weekly work hours, overtime, and estimated pay from daily clock-in/out times.