---
title: "Time Duration Calculator | Numequo"
description: "Find the elapsed time between two clock times. Enter your values to get a clear result, then review the formula, examples and practical explanations."
canonical: "https://www.numequo.com/time/durations-schedules/duration-calculator/"
locale: "en"
---
[Numequo](https://www.numequo.com/) › [Time](https://www.numequo.com/time/) › [Durations and schedules](https://www.numequo.com/time/durations-schedules/)

# Time Duration Calculator

Calculate hours and minutes, including intervals that pass midnight.

## Input data

- **Start time** - type: time; default: 09:00
- **End time** - type: time; default: 17:30

## How it works

Duration = end time − start time, with 24 hours added when the interval passes midnight.

## Quick examples

- **09:00 to 17:30** - Start time: 09:00, End time: 17:30
- **22:15 to 06:45** - Start time: 22:15, End time: 06:45
- **14:10 to 15:00** - Start time: 14:10, End time: 15:00

## Understanding your result

The result shows the elapsed hours and minutes between both times. When the end is earlier than the start, the interval is automatically treated as passing midnight.

Last verified: 29 September 2026 (2026-09-29)

## Frequently asked questions

### Can the interval pass midnight?

Yes. When the end time is earlier, the calculator automatically treats it as the following day.

### What if both times are equal?

The result is zero minutes.

### Are seconds supported?

This first version calculates hours and whole minutes.

### Does the calculator use a time zone?

No. It compares clock times only.

## Related calculators

- [Work Hours Calculator](https://www.numequo.com/time/durations-schedules/work-hours-calculator/) - Calculate your net working hours, deduct breaks and compare the result with your daily target.
- [Duration Add or Subtract Calculator](https://www.numequo.com/time/durations-schedules/duration-add-subtract-calculator/) - Add or subtract two durations expressed as hours and minutes.
- [Arrival Time Calculator](https://www.numequo.com/time/durations-schedules/arrival-time-calculator/) - Add a travel duration to a departure time to find the arrival time.
- [Weekly Timesheet Calculator](https://www.numequo.com/time/durations-schedules/weekly-timesheet-calculator/) - Calculate weekly working hours from daily start times, end times and unpaid breaks.
- [Decimal Hours Converter](https://www.numequo.com/time/durations-schedules/decimal-hours-converter/) - Convert hours and minutes to decimal hours, or decimal hours back to a duration.
- [Time Zone Difference Calculator](https://www.numequo.com/time/durations-schedules/time-zone-difference-calculator/) - Compare two time zones on a chosen date, including daylight-saving changes.

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