Time Duration Calculator
Calculate the exact duration between two times. Shows hours, minutes, and seconds with support for multi-day spans.
How to Use
- 1 Enter a start time (with optional date)
- 2 Enter an end time (with optional date)
- 3 Click Calculate to see the duration
Use Cases
Calculate how long an event, meeting, or activity lasts from start to end.
Measure how long a task or project phase took by entering start and end times.
Calculate the duration of a journey given departure and arrival times.
FAQ
Yes. If the end time is earlier than the start time, the calculator assumes the end time is on the next day.
Yes. The calculator accepts HH:MM:SS format for precise duration calculations.
This tool finds the duration between two specific times. The Hours Calculator adds or subtracts time values.
Related Tools
A/B Test Calculator
Check if your A/B test results are statistically significant. Calculates p-value, Z-score, uplift, and statistical power. Free.
Open →A/B Test Sample Size Calculator
Calculate the sample size needed per variation for a statistically valid A/B test. Set confidence level, power, baseline rate and MDE. Free.
Open →ACOS Calculator
Calculate your Amazon ACOS, ROAS, and break-even ACOS instantly. Free tool for Amazon sellers to measure ad efficiency and profitability.
Open →