Example Data Table
A small sample illustrating typical daily time slices. Use the button to load these as inputs.
| Label | Hours | Minutes |
|---|---|---|
| Standup meeting | 0 | 15 |
| Coding session | 3 | 20 |
| Code review | 1 | 10 |
| Emails | 0 | 25 |
| Planning | 0 | 40 |
Results
Total (H:MM)
5:20
Decimal hours
5.3333
Total minutes
320
As days + hours
0 d 5 h
| # | Label | Hours | Minutes | Total (min) |
|---|---|---|---|---|
| 1 | Design sprint | 1 | 35 | 95 |
| 2 | Client call | 2 | 50 | 170 |
| 3 | Documentation | 0 | 55 | 55 |
| Grand total (min) | 320 | |||
Options
Uncheck if you want strict 0–59 minutes validation only.
Formula used
Let each entry be Hᵢ hours and Mᵢ minutes.
- Convert each to minutes: tᵢ = 60·Hᵢ + Mᵢ.
- Sum: T = Σ tᵢ (total minutes).
- Convert back to hours and minutes with carry-over: H = ⌊T / 60⌋, M = T mod 60.
- Decimal hours: T / 60.
- Days + hours: D = ⌊H / 24⌋, remainder hours H % 24.
Example: 1:35 + 2:50 + 0:55 → T = 95 + 170 + 55 = 320 min → H:MM = 5:20; decimal hours = 5.3333.
How to use this calculator
- Click Add row to increase the number of entries as needed.
- Type hours and minutes (minutes typically 0–59). With Auto-normalize, larger minutes are carried into hours.
- Optionally name each entry for clearer reporting.
- Press Calculate to update totals and the breakdown table.
- Export your results via Download CSV or Download PDF, or use Print.
- Use Reset to example or Use example in calculator to preload sample data.
- Clear everything with Clear all.
FAQs
Yes, if Auto-normalize is on, the calculator will automatically convert extra minutes into hours. Otherwise the minutes field enforces 0–59.
Absolutely. The result shows total hours and minutes, decimal hours, and a days + hours representation for long time spans.
No, this version is designed for summing non‑negative durations. You can, however, split entries to subtract elsewhere before entering the net result.
Decimal hours are convenient for payroll, billing, timesheets, and spreadsheets. For example, 1:30 becomes 1.5 hours.
Everything runs in your browser and on this page. No entries are sent elsewhere unless you save or share the exported files.
This edition focuses on hours and minutes. For second‑level detail, create a row where seconds are converted to minutes (e.g., 90 seconds as 1 minute).
Yes. Both CSV and PDF exports include the breakdown table with your labels, per‑row hours and minutes, and totals.