Free & Instant
Time Calculator
Add or subtract hours and minutes from a time, or find the duration between two times.
Time Calculator
Choose a mode below to get started.
Add/Subtract
Duration
Resulting Time
—About This Time Calculator
This tool has two modes: adding or subtracting hours and minutes from a given time (e.g. shift schedules, cooking times), and calculating the total duration between two times of day — useful for timesheets and work hours.
Time Format Reference
| Unit | Equivalent |
|---|---|
| 1 Hour | 60 Minutes |
| 1 Minute | 60 Seconds |
| 24-hour format | Used internally (e.g. 14:30 = 2:30 PM) |
Frequently Asked Questions
Does this handle times that cross midnight?+
Yes. If adding time crosses into the next day, or if an end time is earlier than the start time in Duration mode, it's automatically counted as continuing into the next day.
Can I use this for work hour timesheets?+
Yes, the Duration mode gives you the total hours and minutes worked between a clock-in and clock-out time.