PrismKitCalculatorsDate Add CalculatorDate Add CalculatorRuns in your browserLocalCopy linkMarkdownAdd or subtract years, months, weeks, days, hours or business days from a date and get the weekday and ISO week.Date Difference CalculatorCount the years, months, days and business days between two dates, with totals down to the second.Duration CalculatorAdd and subtract durations like 1h 30m or 01:20:15, and find the time between two clock times.