Date Difference Calculator
9 toolsFind the difference between two dates.
Runs in your browser — your files and text stay on your device
A complete date and time toolkit — convert Unix timestamps, calculate exact age or the difference between two dates, check the world clock across timezones, run a countdown or stopwatch, add business days, or look up a week number. Everything runs locally in your browser.
Timestamp ConverterAge CalculatorDate DifferenceTimezone ConverterWorld ClockCountdown TimerStopwatchBusiness Days CalculatorWeek Number Lookup
Pick both dates
How to use this tool
- 1Pick a Start date and an End date.
- 2The total days and a years/months/days breakdown appear.
Frequently asked questions
Does the order of dates matter?
No — the tool calculates the absolute difference regardless of order.
Why a different month count than expected?
The breakdown accounts for actual days per month, more accurate than dividing by 30.