Operational Effectiveness Index Calculator

Turn daily metrics into a single effectiveness score. Set weights, run scenarios, and benchmark units. Download tables, PDFs, and insights for every review cycle.

Input metrics and weights

Enter scores from 0 to 100. Weights represent importance.

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Productivity

Output achieved versus planned output.

Score (0–100)

Weight (%)

Quality

First-pass yield or defect-free rate.

Score (0–100)

Weight (%)

On-time Delivery

Percent delivered on schedule.

Score (0–100)

Weight (%)

Cost Efficiency

Budget adherence or cost per unit performance.

Score (0–100)

Weight (%)

Safety

Incident-free performance proxy.

Score (0–100)

Weight (%)

Customer Satisfaction

CSAT/NPS normalized to 0–100.

Score (0–100)

Weight (%)

Cycle Time Adherence

Percent of work meeting cycle-time target.

Score (0–100)

Weight (%)

Auto-normalize weights to total 100%

When enabled, weights are scaled proportionally if they don’t total 100%.

Result precision

After submission, the result appears above this form.

Target: keep each key metric above 80.

Formula used

The index is a weighted average of normalized metrics:

OEI = Σ( MetricScore_i × Weight_i ) ÷ Σ( Weight_i )

Each MetricScore is clamped to 0–100.
If auto-normalize is enabled, weights are scaled to total 100%.
Contributions are MetricScore × (Weight ÷ 100).

How to use this calculator

Enter each metric score using your latest operational data.
Set weights to reflect business priorities for the period.
Enable auto-normalize if weights don’t total 100%.
Press Calculate OEI to view the score above.
Download CSV or PDF to share in review meetings.

Practical guidance

Revisit weights quarterly, but track scores monthly for trend clarity.

Example data table

Unit	Productivity	Quality	Delivery	Cost	Safety	Customer	Cycle	OEI
Ops A	82	91	86	78	95	84	80	84.8
Ops B	74	88	79	83	92	77	76	80.7
Ops C	90	85	92	73	97	89	88	87.4

Example OEI uses the default weight profile shown in the form.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.