A burndown chart is a visual tool for tracking the amount of work remaining over a defined period, such as a sprint. It plots estimated effort remaining on the vertical axis against time on the horizontal axis. Teams can compare actual progress with a planned pace, discuss delivery risks, and review whether the forecast still reflects current conditions.

For a foundational overview of a chart’s axes and lines, see What is a Burndown Chart. The video below introduces burndown charts, burnup charts, and velocity.

A useful burndown chart has four components: a time axis, an effort axis, an ideal work-remaining line, and an actual work-remaining line. Together, they show the planned pace and the team’s recorded progress. The chart can be used in a software project or updated manually on a board, provided the team uses consistent estimates and keeps the underlying work information current.

Set it up with these elements:

For a practical overview of sprint burndown setup and interpretation, see Atlassian’s High-Performance Burndown Chart guide. The same components work without dedicated software: record the date and remaining estimate in a spreadsheet or on a physical board, then plot each update against the ideal line.

Story points express relative effort or complexity, making them useful when a team wants to compare its own work patterns across iterations. Hours may be more suitable for short, tightly defined tasks where detailed time estimates support day-to-day coordination. Neither unit is universally better. Choose based on the work and the decisions the chart should inform, then avoid switching units mid-chart. Changing measurement methods makes comparisons unreliable.

Calculate the ideal line by dividing the starting estimate by the number of time intervals until the target date. For example, 24 story points across six working days gives a reference reduction of four points per day. Plot a gradual path from 24 to zero. Actual progress is rarely this even, so use the line to prompt investigation, not to demand identical daily output or judge individuals.

If the actual line sits above the ideal line early in a sprint, check whether work is blocked, estimates have changed, or tasks are not reaching completion. Confirm the context before changing the forecast. If new work enters the backlog, update the chart or make the scope change visible so the comparison remains meaningful.

Building skill in chart design and interpretation can support broader project leadership. If your organization is strengthening its project management practices, explore project management consulting to connect team-level tracking with delivery discussions.

Choose a burndown chart to monitor how much work remains, and a burnup chart to show completed work alongside total scope. A burndown is often useful for a team managing near-term delivery. A burnup makes scope changes easier to see, which can help project leaders explain release forecasts to stakeholders.

Neither chart is universally better. Select the visual based on the question people need answered, and be clear about what its data does and does not show.

Use a burndown chart for daily stand-ups and internal sprint monitoring. It helps a team notice when remaining work is not decreasing as expected and investigate possible blockers, estimation changes, or a work plateau. The chart is a prompt for discussion, not proof that the team is underperforming.

For example, if the team’s remaining-work line stays flat across several updates, check whether tasks are too large, blocked, or not being updated consistently. Discuss what action could help the team complete valuable work. This supports Agile ways of working by making progress visible and encouraging the team to adapt. For organizational guidance on project management practices, explore project management consulting.

A burnup chart separates completed work from total scope. If the team completes work while new requirements are added, the completed-work line can rise as the total-scope line moves upward. That distinction helps stakeholders see whether a forecast has shifted because delivery slowed, scope increased, or both.

Consider a release that starts with 40 estimated points of work. The team completes 20 points, then approved additions increase the total to 50. A burndown chart may make the remaining amount appear to grow. A burnup chart can show both the completed 20 points and the expanded scope, giving a clearer account of the change.

For release planning, that visibility can help executives and clients discuss options such as revising the target date, reducing scope, or changing priorities. A burnup chart does not, on its own, justify a timeline extension. Pair it with the reason for the scope change, current delivery assumptions, and the impact of each option. That turns the chart into evidence for a decision rather than a substitute for one.

A chart pattern is a signal to investigate, not a verdict on team performance. A flat line, a late drop, or an increase in remaining work can point to hidden blockers, work tracked in batches, changing estimates, or added scope. Project leaders get value from the chart by asking what changed and agreeing on a response.

A flat actual-work line means the recorded amount of remaining work has not changed. That may reflect a blocker or tasks that are too large to show progress until near completion. It may also mean the team hasn’t updated its estimates. Ask team members what is preventing work from moving, then check whether tasks can be broken into smaller, verifiable outcomes.

A steep drop at the end of a sprint, sometimes called a “Waterfall in Scrum,” may mean work was completed throughout but only recorded in a batch. It can also indicate that work was genuinely left until late. Either way, the chart alone cannot confirm quality. Review whether work met the team’s agreed completion criteria and whether testing or review was compressed at the end.

To encourage incremental progress, Scrum Masters can help the team:

If the remaining-work line rises, first check whether work was added or estimates changed. Compare the sprint backlog with its original plan and identify when new items entered, who approved them, and what existing work was affected. An increase is not automatically scope creep. It may reflect a necessary priority shift or a more accurate estimate.

Then have a clear conversation with the Product Owner. Ask whether the new work must be included now, what outcome it supports, and which planned item should move out if the team’s capacity is unchanged. Make the trade-off visible. If scope is repeatedly added mid-sprint, use the pattern to improve refinement and sprint planning by checking assumptions, dependencies, and capacity before the next commitment.

Use Burndown Charts to support learning, not to pressure a team into hiding uncertainty. If your organization needs help connecting project management practices with delivery decisions, explore project management consulting.

Burndown data becomes strategically useful when leaders connect it to delivery decisions, not just task status. Historical velocity can inform a multi-sprint forecast, while a clear explanation of assumptions helps executives understand uncertainty. The chart cannot guarantee a delivery date, but it can support a more transparent conversation about likely outcomes, risks, and trade-offs.

To forecast across several sprints, use the team’s completed work from comparable past sprints as a planning input. If a team has consistently completed around 20 story points per sprint, a backlog of 60 points might suggest roughly three sprints of work, assuming scope and working conditions remain broadly comparable. Treat this as an estimate, not a commitment. Changes in scope, team capacity, dependencies, or the nature of the work can alter the forecast.

For an executive steering committee, avoid presenting a chart without context. Summarize:

This approach turns Burndown Charts into evidence for decisions rather than a scorecard. It also helps project leaders communicate honestly: show the current forecast, explain what may shift it, and state when the estimate will be reviewed. Organizations applying Agile practices across multiple teams can connect these reporting habits with broader corporate consulting support.

Understanding burndown charts can strengthen a PMP® professional’s ability to discuss Agile progress, forecasts, and stakeholder communication. A chart is one technique among many, not a substitute for sound judgment or an official measure of individual performance. Avoid assuming it appears frequently in PMP exam questions unless current exam materials confirm that claim. Focus instead on understanding what the metric shows, its limitations, and how to use it in context.

That practical skill also supports career growth. A project manager who can explain a forecast, surface uncertainty, and facilitate a decision demonstrates more than familiarity with a tool. They show disciplined reporting and leadership under changing conditions.

If you want to build project management knowledge alongside practical techniques, explore the PMP Bootcamp from Woloyem helps you to learn and master projet and service management.