Completion Rate Calculator
Completion rate is the simplest productivity metric there is: what share of the work you started actually got finished. It applies to project tasks, survey responses, course credits, and sales follow-ups alike. The catch is that not all tasks are equal, which is why this calculator has two modes: a simple mode for counting tasks, and a weighted mode for when some tasks matter more than others.
Counts finished work only. A task that is 90% done still counts as not complete in simple mode; weighted mode with honest weights is the fairer picture when task sizes differ.
Quick Answer
Key takeaways
- Completion rate = completed / total x 100. The remaining count and the incomplete percentage come free with the same two numbers.
- Weighted mode replaces the headcount with importance: completed weight / total weight. Use it whenever tasks differ much in size or value.
- Weights are relative. 3, 1, 2 and 30, 10, 20 give identical results, so pick the scale that is easiest to assign honestly.
- For surveys, completion rate (finishers vs starters) is not response rate (completions vs invitations). The two numbers diagnose different problems.
How to use the completion rate calculator
Start in simple mode whenever every item counts the same: tickets closed, chapters read, invitations answered. Enter the total and the completed count and press Calculate Rate. You get the percentage, the number remaining, and the incomplete percentage, which is the figure most status meetings actually argue about. The calculator refuses impossible entries, such as completed exceeding total, and says why instead of printing a rate over 100%.
Switch to weighted mode when the items differ. List each task, give it a weight that reflects its size or importance (story points, hours, revenue, exam marks), and tick the finished ones. Add or remove rows as the project changes. The pre-filled rows show the pattern: Design mockups (weight 3, done), Copy edits (weight 1, not done), Launch checklist (weight 2, done). If your metric is people rather than tasks, the same two modes drive rates like the acceptance rate calculator pattern of accepted over offered, counted or weighted by value.
The two formulas
Simple mode is one division. Weighted mode is the same division after each task votes with its weight.
Weighted mode is, in effect, an earned-value view of a checklist: progress is measured in the units that matter rather than in rows. Project standards have used that idea for decades because a project that has finished nine trivial tasks and stalled on the one critical task is not 90% done in any sense a sponsor cares about. The simple count says it is; the weighted rate says what everyone in the room already knows.
Worked examples, verified against the tool
| Case | Numbers | Result |
|---|---|---|
| Team tasks (simple) | 96 of 120 finished | 80.00%, 24 remaining, 20.00% incomplete |
| Survey responses (simple) | 200 of 500 invitations answered | 40.00%, 300 outstanding |
| Weighted project | Weights 3, 1, 2; the 3 and 2 are done | 83.33% weighted vs 66.67% by headcount |
The weighted gap is the lesson. By headcount the project is two-thirds done. By weight it is five-sixths done, because the unfinished task is the smallest one. Neither number is lying; they answer different questions, and reporting both is more honest than reporting either alone.
When the weighted bar runs ahead of the headcount bar, the important work is getting done. When it lags, the team is clearing easy tasks while the heavy ones wait, a pattern worth catching early, much like the drop-off pattern an abandon rate calculator exposes in a checkout funnel.
Completion rate is not response rate
Survey work uses both terms, and swapping them produces confident, wrong conclusions. As the Qualtrics guide to survey response rates puts it, response rate compares completions with everyone sent the survey, while completion rate compares finishers with the people who actually started it. Send 500 invitations, get 250 starts and 200 finishes, and the response rate is 40% while the completion rate is 80%.
Low response rate
- People never showed up
- Points at the invitation: timing, channel, subject line, sender
- Fix the ask, not the questionnaire
Low completion rate
- People showed up and gave up
- Points at the questionnaire: length, friction, a bad question midway
- Shorten and simplify the survey itself
The same distinction travels. A course with many enrolments and few finishers has a completion problem in the material, not a marketing problem, and an onboarding flow with few starters has the reverse. Related funnel metrics live nearby: starters who quit midway also drive the numbers in a cancellation rate calculator, and teams reporting attainment against a target usually pair this rate with the attainment percentage calculator.
When the completion rate misleads
The rate is honest about counts and silent about everything else. It does not know whether the finished tasks were the easy ones, whether the remaining 20% will take 80% of the time, or whether "done" meant done well. Three habits keep it useful. Define done before you start counting, and hold the definition steady, or the rate improves by redefinition. Re-baseline openly when scope changes: adding 40 tasks mid-project drops the rate without anyone slacking, and pretending otherwise poisons the metric. And pair the rate with a quality or timeliness measure whenever the stakes justify it, because a team can hit 100% completion on work that all has to be redone.
What competing calculators miss
The top results for this keyword are almost all single-division tools: two boxes, one percentage. Against that field, three things here are genuinely scarce.
Miss 1: no weighted mode. None of the leading completion percentage pages reviewed offers per-task weights, so a two-minute task counts the same as a two-week one. The weighted mode is the difference between a progress figure and a progress illusion on any project whose tasks vary in size.
Miss 2: no remainder reporting. Most tools print the percentage and stop. This one also prints the count remaining and the incomplete percentage, because "24 tasks left" is the number a manager can staff against, while "80%" is not.
Miss 3: silent acceptance of impossible inputs. Enter 130 completed out of 120 total into a typical tool and it will cheerfully report 108%. This calculator rejects the entry and explains the likely cause, an undercounted total.
One honest limit: weighted mode asks you to supply the weights, and weights assigned carelessly just move the distortion. If every task gets weight 5 except the manager's pet task at 50, the weighted rate is worse than the simple one. The tool computes; the honesty is yours.
Frequently Asked Questions
Divide completed tasks by total tasks and multiply by 100. With 96 completed out of 120 total, the rate is 80.00%.
Each task gets an importance weight, and the rate is completed weight divided by total weight, times 100. It reflects the value of the work done, not just the count.
No. Completed tasks cannot exceed total tasks; the calculator rejects such entries. If your numbers suggest otherwise, the total was probably undercounted.
It depends on context. For surveys, 30-40% is respectable; for assigned team tasks, anything under 80-90% deserves a look at blockers. Compare against your own past periods rather than someone else's benchmark.
Only the ratios matter: weights of 3, 1, and 2 give the same 83.33% as 30, 10, and 20.
Completion rate asks whether the work finished. Project success rate also asks whether it finished on time, on budget, and to the required quality.
For surveys, response rate compares completions with everyone invited, while completion rate compares finishers with people who actually started. A survey sent to 500 people where 250 start and 200 finish has a 40% response rate and an 80% completion rate.
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References
- Qualtrics, "How to increase survey response rates" - the response rate formula and the response rate vs completion rate distinction used in the survey section. Qualtrics: Survey response rates. Accessed October 2026.
- QuestionPro, "Survey Completion Rate vs Response Rate: Key Differences" - denominators compared, and why completion rate is almost always the higher figure. QuestionPro: Completion rate vs response rate. Accessed October 2026.
- Instruqt, "What is completion rate?" - the training and onboarding definition: finishers as a share of starters, and what a low rate signals. Instruqt: Completion rate glossary. Accessed October 2026.
- Responsly, "Survey Response Rate: Benchmarks and How to Improve It" - delivered-invitation denominators and benchmark context for survey programmes. Responsly: Survey response rate benchmarks. Accessed October 2026.