Project sprint completion from remaining work and team velocity.
Please do not make financial decisions based on these results.
What is the Burndown Chart Calculator?
Project sprint completion from remaining work and team velocity. To use the Burndown Chart Calculator, enter remaining story points, velocity, sprint length, total scope; it returns sprints needed, days to finish, percent complete, and shows them instantly as you type.
Where the Burndown Chart Calculator fits
Project sprint completion from remaining work and team velocity. The main figure it returns is the Sprints needed, worked out from the values you enter.
It belongs with the other business planning tools. If you are comparing options or checking a result from another angle, try the Burn Rate Calculator, Consulting Fees Calculator or the EVM Calculator.
How to use the Burndown Chart Calculator
- Enter your numbers. The inputs are Remaining story points, Velocity (points per sprint), Sprint length (days), Total scope (points). Use figures from the same period (same month, quarter or year) for every field. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Sprints needed, and the cards below show Days to finish, Percent complete. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the Burndown Chart Calculator using the default values shown in the calculator above:
Inputs
| Remaining story points | 180 |
|---|---|
| Velocity (points per sprint) | 30 |
| Sprint length (days) | 14 |
| Total scope (points) | 300 |
Results
| Sprints needed | 6 |
|---|---|
| Days to finish | 84 |
| Percent complete | 40% |
With these inputs the calculator returns Sprints needed: 6. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Remaining story points from 180 to 216 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Sprints needed | 6 | 7.2 | +20% |
| Days to finish | 84 | 101 | +20% |
| Percent complete | 40% | 28% | -30% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the Burndown Chart Calculator reports Sprints needed, days to finish and percent complete. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
How do I use velocity for forecasting?
Average the points finished in recent sprints and divide the remaining backlog by it.
Can I use these for a business plan?
Yes. They give quick estimates for break-even, valuation, budgets and project returns. Confirm important figures with your accountant before relying on them.
Are the results forecasts?
No. They apply the formula shown to the numbers you enter, so the output is only as realistic as your assumptions.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
Related business planning calculators
- Burn Rate Calculator
- Consulting Fees Calculator
- EVM Calculator
- Days Off Calculator
- Break-even Calculator
- Contribution Margin Calculator
- Average Fixed Cost Calculator
- Cost of Goods Sold Calculator
- Business Valuation Calculator
- Pre and Post Money Valuation Calculator
- Additional Funds Needed Calculator
- Build vs. Buy Calculator
All Business Planning calculators →