Progress Rate Calculator | Weighted Average of Multiple Tasks

Enter each task's completion rate and weight (effort share) from your WBS to instantly calculate overall project progress using a weighted average. A free tool to see your project's real progress at a glance.

Tips

  • Weight can be any number representing task size, such as person-days or budget share. Even if the total isn't 100, it's automatically calculated as a correct ratio.
  • Entering the weight for a task at 0% completion lets you see in advance how much it will affect overall progress once work begins.
  • Enter your entire WBS as tasks to see each one's progress or delay at a glance, like a simplified Gantt chart.
  • Prioritizing completion on tasks with a larger weight (scope) improves overall progress more efficiently.

FAQ

It sums each task's "weight × completion rate" and divides by the total weight — a weighted average. Unlike a simple average, tasks with a larger weight (scope) have a bigger impact on overall progress.

No. Weight can be entered in any unit, such as person-days or budget, and is automatically calculated as a ratio even if the total isn't 100.

A simple average treats every task as equally important, while a weighted average reflects the completion of larger, higher-effort tasks more strongly. In real project management, a weighted average tends to represent the actual state more accurately.

There's no system-imposed limit — add as many rows as your WBS requires. That said, too many tasks can hurt readability, so grouping into larger work units is recommended.
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Side Note — Why a Simple Average Fails to Represent Project Progress

Showing an accurate "overall progress rate" for a project is trickier than it sounds. If 5 out of 10 tasks are complete, that doesn't necessarily mean the project is "50% done." Treating a one-week task the same as a three-month task produces a progress report that's far from reality.

A weighted average solves this problem. By assigning a "weight" — such as effort or budget — to each task and reflecting completion in proportion to that weight, you get an overall progress rate closer to reality. The PMBOK Guide's concept of Earned Value Management (EVM) explains the importance of this kind of weighted progress tracking as well.

Full-featured Gantt chart tools require setup and a learning curve, which can be overkill just to report progress. A simple calculator where you enter tasks, weights, and completion rates on the spot is handy for weekly status meetings or a quick client update.

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