Understanding Schedule Attainment
How we calculate. Attainment % = actual completed ÷ scheduled quantity × 100. See our methodology and accuracy policy .
Real-world scenario: A typical Schedule Attainment case uses actual completed 9400 and scheduled quantity 10000. Enter the same figures below to reproduce the worked path.
What is Schedule Attainment?
A planning-adherence KPI. Distinct from throughput efficiency when “scheduled” is the firm plan rather than an engineered target rate.
- Same UOM for actual and scheduled
- Freeze the schedule snapshot
- Can exceed 100% if overbuilt
The Formula
Worked Example
Common Use Cases
- MRP/MES: plan vs actual
- Customer OTIF root cause: make-complete
- Shift scorecards: schedule hit rate
Pro Tips
- Don’t silently change the plan mid-shift
- Segment by constraint resource
- Pair with OEE and downtime
| Scenario | When to use |
|---|---|
| Percent of a number | Finding a part of a whole (tax, tip, score) |
| Percent change | Comparing old vs new values |
Limitations: Schedule Attainment results are educational manufacturing and lean/TPM planning aids—not process-safety, quality-system, or financial advice. Confirm definitions with your MES/SCADA and quality policies.
Common mistakes
- Swapping part and whole: The denominator must be the full total, not a subset.
- Rounding too early: Carry extra decimal places through multi-step work before rounding the final percent.
- Mixing percent and decimal forms: Enter rates in the format the calculator labels expect.
The worked example for schedule attainment was verified with the calculator form on this page—enter the same values to confirm the result.
When to use this calculator
- Use this page when your wording matches schedule attainment and the form labels on screen.
- Use percent of a number for “what is X% of Y?” problems.
- Use number is what percent when you know part and whole and need the percent.
Still unsure about schedule attainment? Start with the quick answer above, then open the linked calculator that matches your wording.
❓ Frequently Asked Questions
How do I use this schedule attainment calculator?
For schedule attainment, enter the values labeled on the form, then press Calculate. Compare the result to the worked example on this page.
What formula does this page use?
See the quick answer and formula box above for schedule attainment—the same percentage calculator expression is applied to your inputs.
What if my result looks wrong?
When checking schedule attainment, re-check part vs whole (or rate vs base), rounding, and whether percents were entered as 25 rather than 0.25 when the form expects percents.
Authoritative References
For OEE and manufacturing KPI definitions, consult: