Time and Date Calculators: Hours, Durations and Days
Work with clock times, elapsed durations and calendar dates. Choose a time calculator for hours and minutes, a timesheet for shifts, or a date calculator for days and calendar spans.
- Time CalculatorAdd or subtract durations, or add a duration to a clock time.
- Hours CalculatorHours between two times, minus breaks, with a weekly time card and pay.
- Date CalculatorDays between two dates, business days, or a date plus or minus a span.
Clock time, work hours or calendar dates?
- Add or subtract a duration
- Time Calculator. Combine days, hours, minutes and seconds, or add a duration to a clock time. Use this when the question is about elapsed time rather than specific calendar dates.
- Total a shift or weekly time card
- Hours Calculator. Enter start and end times and unpaid breaks to get hours worked in decimal and hours-and-minutes form. Add shifts to compare the weekly total and estimated pay.
- Count days or find a future date
- Date Calculator. Compare two dates or add and subtract days, weeks, months and years. The business-day count covers weekdays; it does not remove public holidays.
Common questions
Is 1 hour 30 minutes the same as 1.30 hours?
No. Thirty minutes is half an hour, so 1 hour 30 minutes equals 1.5 decimal hours. The hours calculator shows both formats to make that conversion clear.
Which tool should I use for a birthday or age?
Use the age calculator in the everyday section for age in years, months and days and a birthday countdown. Use the date calculator for a general span between two dates.
Continue with a related calculation
- Paycheck and Salary Calculators for 2026. Convert work hours and an hourly wage into earnings estimates.
- Everyday Calculators: Tips, Discounts, Age and Area. Calculate an age or the time until a birthday.