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How to calculate percentage complete in Excel and Google Sheets
Topic:PercentagesExcel & Google Sheets
=B2/C2✓
Verified example
Computed by a real spreadsheet engine on the sample data below.
| Task | Completed | Total |
| Design | 8 | 10 |
| Development | 15 | 30 |
| Testing | 3 | 10 |
| Deployment | 0 | 5 |
=B2/C2→0.8
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Step by step
- 1Set up columns for Completed (e.g. B) and Total (e.g. C).
- 2In a result cell (e.g. D2), type =B2/C2.
- 3Press Enter, then format the cell as a Percentage.
- 4Copy the formula down for all tasks or projects.
Tips
- Use conditional formatting to highlight rows where percentage complete is 100% (green) or below 50% (red) for an at-a-glance status view.
- To auto-count completed tasks, use COUNTIF: =COUNTIF(B2:B6,"Done")/COUNTA(A2:A6).
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Frequently asked
How do I handle the case where Total is zero?
Use =IFERROR(B2/C2,0) to return 0% when the total is zero, avoiding a #DIV/0! error.
Can I calculate overall project completion from multiple tasks?
Yes — use =SUM(completed_range)/SUM(total_range) to aggregate across all tasks.
More on Percentages
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