Date & Time Difference Calculator
Calculate the difference between two dates and times.
Date and time difference calculator
Find the duration between two dates for planning, project timelines, deadlines, contracts and personal events.
How it works
Enter your values, choose the relevant units or options, and review the calculated result. For financial and market tools, displayed figures are calculations and can differ from provider quotes, fees, spreads, taxes or local rules.
Frequently asked questions
Does the calculator account for leap years?
A date-duration calculation can account for calendar dates and leap years, but results involving months can depend on the chosen calendar convention.
Can I calculate hours between dates?
Yes. When date and time inputs are provided, the result can be expressed as a duration in smaller units.
Is a month always 30 days?
No. Calendar months have different lengths, so calendar-based calculations should not assume every month has 30 days.