Calculates the difference between two dates in days, weeks, months, and years simultaneously. Includes an option to count only business days (Monday–Friday), excluding weekends and optionally public holidays. Shows both the exact duration and a human-readable form ("3 years, 2 months, and 15 days").
Thursday
Thursday
Pick two dates and see the difference in every useful unit, including business days.
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 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.