Business Tools
Use this burndown chart calculator to check whether a sprint or fixed-scope delivery plan is ahead, on track, or at risk before changing scope or dates.
Live calculator
100 work units remain versus 88 on the ideal line.
Adjusted scope minus completed work.
20 units per elapsed day so far.
Use one fixed unit definition such as story points, hours, tasks, or tickets for the whole sprint snapshot.
| Burndown measure | Value |
|---|---|
| Adjusted scope | 220 |
| Completed work | 120 |
| Actual remaining work | 100 |
| Ideal remaining work today | 88 |
| Variance vs ideal | 12 |
| Current burn rate/day | 20 |
| Required burn rate/day | 25 |
| Remaining days | 4 |
Burndown is a progress signal, not an individual performance score. Scope changes, batch updates, blocked work, and estimate changes can move the line without proving the team is faster or slower.
Use this for planning and comparison. Contracts, collections, payables, tax timing, payroll, refunds, one-time bills, seasonality, and accounting treatment can change the real business result.
Quick answer
Burndown Chart Calculator calculates sprint burndown status from planned work, scope added, completed work, sprint days and days elapsed. The visible formula is Remaining work = adjusted scope - completed work; ideal remaining = adjusted scope x (1 - days elapsed / sprint days).
Formula
Remaining work = adjusted scope - completed work; ideal remaining = adjusted scope x (1 - days elapsed / sprint days)Use one consistent work unit such as story points, hours, tasks, or tickets. Scope changes should be tracked separately from completed work.
How to use
Example
Calculator use
Before relying on it
Details
These notes make the assumptions explicit, especially where the same search query can mean slightly different things.
The ideal line is a simple reference path, not a guarantee or performance target by itself.
Positive variance means more work remains than the ideal line expects at this point.
Use burndown with blockers, scope changes, batch updates, and quality risk before compressing a schedule.
Source notes
Benchmarks
The calculator is a decision aid, not a fixed rule. Use the output to compare scenarios and document your assumptions. Benchmark ranges are broad planning heuristics unless this page names a specific source for the range.
The main status number for the current sprint snapshot.
A straight-line reference for reading whether the sprint is ahead or behind pace.
Useful for deciding whether scope, staffing, or date assumptions need a realistic adjustment.
Calculator accuracy
The formula, inputs, example, and limitations are shown so the result is checkable, not just a number in a box.
Remaining work = adjusted scope - completed work; ideal remaining = adjusted scope x (1 - days elapsed / sprint days)
Planned work, Scope added, Completed work, Sprint days, Days elapsed
Business results depend on contracts, accounting treatment, taxes, payment timing, refunds, collections, and operating assumptions.
June 6, 2026
Toolkit Shelf. Burndown Chart Calculator. Last reviewed June 6, 2026. https://toolkitshelf.com/tools/burndown-chart-calculator
FAQ
No. It is a team progress signal for remaining work over time. It should not be used as an individual performance score.
Track scope added separately. Otherwise a rising remaining-work line can be mistaken for poor execution when the real cause is new work.
Late status updates, batch-closing tickets, blocked review work, and estimate changes can all distort the line. Use it with delivery context.
No. Business tools are scenario planners. Contracts, taxes, payment timing, accounting treatment, refunds, and legal requirements can change decisions.
Save the assumptions, compare a conservative scenario, and review the result with actual books, contracts, or an advisor before making a high-stakes decision.
Different tools may use different rounding, assumptions, default rates, methods, formulas, or input timing. Compare the visible method and inputs before relying on the output.