Adding Hours and Minutes Calculator
Enter any number of time durations to see their total—handy for timesheets, workout logs, study sessions, or overtime tracking.
Use negative values to subtract time.
Use negative values to subtract time.
Total time: 2 hour(s) 15 minute(s)
Decimal hours: 2.250 h
Decimal days: 0.0938 day(s)
Total minutes: 135 minute(s)
How to Use This Calculator
Enter your time blocks
Login hours, rehearsal sessions, or study chunks—one per row.
Add or remove rows
Use the add button to include more segments or remove redundant entries.
Review totals
See normalized hours and minutes along with decimal conversions for payroll or reporting.
Formula
Total Minutes = Σ (Hours × 60 + Minutes)
Normalized Hours = ⌊|Total Minutes| ÷ 60⌋ × sign
Normalized Minutes = |Total Minutes| mod 60 × sign
Decimal Hours = Total Minutes ÷ 60
Decimal Days = Decimal Hours ÷ 24
Example: (1 h 30 m) + (0 h 45 m) − (0 h 10 m) → 125 minutes → 2 hours 05 minutes.
Why Summing Durations Helps
- Combine shift segments for payroll or freelance invoices.
- Track creative practice or training hours across a week.
- Compare time investments across projects or clients.
- Balance positive and negative adjustments (breaks, credits).
Frequently Asked Questions
Can I enter decimal minutes?
Yes—fractional minutes are supported. The calculator keeps full precision before normalizing.
How do negative values work?
Enter negative hours or minutes to subtract time (e.g., breaks or corrections). The total handles signs automatically.
Is there a limit to the number of rows?
No practical limit. Add as many segments as you need; the calculation remains instant.
Can I export the result?
Copy the totals into spreadsheets, time trackers, or billing tools as needed.