Time Calculator – Add, Subtract & Convert Time Easily
The Time Calculator helps you quickly add, subtract, and convert time units like hours, minutes, and seconds. Whether you're calculating work hours, creating a study plan, or managing daily schedules, this tool makes it easy and accurate.
How to Use the Time Calculator
Enter the hours, minutes, and seconds for each time period you want to add or subtract. The calculator will display the total time or the difference, and you can convert the result to any unit you prefer.
Time Calculation Basics
Basic time operations include:
- Addition: Add hours, minutes, and seconds. If minutes or seconds exceed 60, they roll over to the next unit.
- Subtraction: Subtract one time period from another, borrowing units if needed.
- Conversion: Convert hours to minutes, minutes to seconds, or any combination.
Example
Time 1: 2 hours 45 minutes
Time 2: 1 hour 30 minutes
→ Addition: 2h 45m + 1h 30m = 4 hours 15 minutes
→ Subtraction: 2h 45m − 1h 30m = 1 hour 15 minutes
→ Conversion: 2h 45m = 165 minutes
Common Use Cases
- Calculating work hours for payroll or timesheets
- Planning study schedules or project timelines
- Adding multiple event durations
- Subtracting time gaps between activities
- Converting hours to minutes for easy tracking
Why Use a Time Calculator?
Doing time math manually can be confusing, especially when carrying over units. This calculator ensures accuracy and saves time when managing work, study, or daily life.
Frequently Asked Questions (FAQs)
Can I add more than two time values?
Yes! Add as many as you want — the calculator handles them all.
Does it support negative time?
Yes. If you subtract a larger time from a smaller one, it will show a negative result.
Can I convert hours to seconds?
Absolutely. 1 hour = 60 minutes = 3,600 seconds.
Is this useful for shift planning?
Yes — it's perfect for scheduling shifts, breaks, and overtime.
Does it handle decimal hours?
Yes — you can input decimals and it converts them accurately to minutes and seconds.
Related tools: Hours Calculator, Overtime Calculator, Timesheet Calculator.