Time Duration Calculator
Hours and minutes between a start and end time
Duration
In hours
In minutes
Time Duration Calculator — Complete Guide & Instructions
MakeCard Time Duration Calculator finds the exact elapsed time between a start and end clock time, reporting it in hours-and-minutes, decimal hours, and total minutes. A Set to now shortcut fills the current time instantly, and a next-day option handles overnight shifts correctly. It is handy for work hours, study sessions, travel legs, and overtime calculations.
How to Use Time Duration Calculator
- 1 Enter the Start time — or tap Set to now to fill the current time.
- 2 Enter the End time the same way.
- 3 Tick "End is on the next day" if the period crosses midnight.
- 4 Press Calculate duration and read the result as h:mm, decimal hours, and total minutes.
Key Features & Capabilities
- Hours-and-minutes, decimal-hours, and total-minutes outputs together.
- Overnight support via the next-day checkbox — e.g. 22:00 to 06:30.
- Set to now shortcuts on both fields.
- Validates inputs and explains errors instead of failing silently.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Input | Two clock times (24-hour picker) + optional next-day flag |
| Outputs | Duration display, decimal hours, total minutes |
| Range | Up to 24 hours per calculation |
Practical Everyday Use Cases
- Working out daily hours for a timesheet or attendance record.
- Measuring the length of a meeting, class, or study block.
- Computing night-shift durations that cross midnight.
- Timing a journey leg between departure and arrival.
Pro Tips for Best Results
- For shifts past midnight always tick the next-day option — otherwise the result comes out negative.
- Decimal hours are what payroll systems expect: 7h 30m = 7.5h.
- Use Set to now on the end field to measure a task you just finished.
Common Problems & Solutions
The end time is earlier than the start — enable "End is on the next day" for overnight ranges.
This tool covers up to 24 hours; for longer spans use the Date Difference Calculator.
Privacy & Security
100% Client-Side Execution
Times are compared locally in your browser — nothing is sent or saved.
Frequently Asked Questions
Everything you need to know about using Time Duration Calculator
Enter the start and end times and press Calculate duration — you get the span in hours-minutes, decimal hours, and total minutes.
Enter the times normally and tick "End is on the next day" — for example 22:00 to 06:00 correctly returns 8 hours.
The result grid shows it automatically: 1 hour 45 minutes displays as 1.75h for payroll and timesheet entry.
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