A collection of practical calculators and number tools for everyday tasks — convert units, calculate percentages, find date differences, analyse statistics, and more. All calculations happen instantly in your browser.
Convert between length, weight, temperature, volume, area, and more.
Format numbers with locale-specific separators, currency, and scientific notation.
Calculate percentages, percentage change, and percentage of a total.
Calculate the number of days, weeks, or months between two dates.
Calculate exact age from a date of birth to today or a specific date.
Calculate mean, median, mode, standard deviation, and more from a dataset.
Generate Fibonacci sequences up to N terms or up to a maximum value.
Check if a number is prime and generate prime numbers in a range.
Calculate the Greatest Common Divisor and Least Common Multiple.
Calculate compound interest with configurable frequency and time period.
Calculate tip amount and split the bill between any number of people.
Calculate and convert image or video aspect ratios.