Calculate duration between two dates and times precisely
| Years | 0 |
| Months | 0 |
| Days | 0 |
| Hours | 0 |
| Minutes | 0 |
| Seconds | 0 |
Calculate age in years, months, and days
From birth date to current date
Calculate Age →Convert time between different time zones
Worldwide time zone conversions
Convert Time →Create countdowns to important events
Days, hours, minutes, seconds
Start Countdown →This calculator is highly accurate and accounts for leap years, different month lengths, and time zone differences. It calculates down to the second precision.
Yes, the calculator automatically accounts for leap years (years divisible by 4, except century years unless divisible by 400).
Business days exclude Saturdays and Sundays. You can customize this in the advanced options to include specific holidays.
Yes, you can select different time zones for start and end times to calculate duration across time zones accurately.
You can calculate durations from year 1000 to year 9999, covering almost any practical time duration calculation need.