Hour Calculator

Calculate the duration between two times or dates in hours and minutes.

hourglass_bottomHour Calculator

schedule

Calculate Hours Between Two Times

Start Time

End Time

date_range

Calculate Hours Between Two Dates

Start Date & Time

End Date & Time

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About Hour Calculator

The Hour Calculator is a straightforward tool for finding the duration between two time points. Whether you need to calculate work hours, track project time, or figure out the gap between events, this tool gives you instant results in hours and minutes.

Choose between a simple time-to-time mode for same-day calculations or a full date-and-time mode for spans across multiple days. All calculations happen in your browser for instant, private results.

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How to Use

Enter Times

Input a start time and end time, or use the date-and-time mode for calculations spanning multiple days.

Calculate

Click Calculate to see the duration in hours and minutes.

Copy or Reset

Use the result for your needs, or click Clear to start a new calculation.

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Frequently Asked Questions

What is an Hour Calculator? expand_more

An Hour Calculator computes the duration between two time points, showing the result in hours and minutes. It is useful for tracking work hours, scheduling, and time management.

What happens if the end time is before the start time? expand_more

In time-only mode, the calculator assumes the end time is on the next day. In date-and-time mode, it calculates the exact difference which may be negative if the end is before the start.

Can I calculate hours across multiple days? expand_more

Yes. Use the date-and-time section to calculate hours between any two dates and times, even if they are weeks or months apart.

Is my data private? expand_more

Yes. All calculations are performed locally in your browser. No data is sent to any server.