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Overall Equipment Throughput Estimator

This estimator calculates overall equipment throughput from good units produced and actual run time. It expresses the observed output as units per hour and also reports the corresponding minutes per good unit, which can help teams compare capacity across shifts or operating scenarios.

Using good units makes the result a quality-adjusted output rate rather than a gross count rate. That is often useful for delivery and capacity discussions, but it also means a change in quality can change throughput even when machine speed does not. Use run time and good-unit counts from the same period, and keep the definition of a good unit consistent when comparing results.

Output measurement

min
units
Result
—
good-unit throughput
Good units/minute—
Minutes per good unit—
Run hours—

1. Enter actual run time
Use the minutes during which the equipment was running in the measurement period.

2. Enter good output
Count only units that meet the good-unit definition used for this throughput view.

3. Review hourly throughput
The main result normalizes the output to units per run hour so periods of different lengths can be compared.

4. Check the reciprocal pace
Minutes per good unit shows the average run-time burden associated with one acceptable unit.

5. Use consistent counting rules
Keep product, quality, and run-time definitions aligned when using throughput for trend or capacity comparisons.

Good-unit throughput = Good units produced ÷ (Actual run time ÷ 60) Minutes per good unit = Actual run time ÷ Good units produced

Actual run time is entered in minutes and converted to hours for the main result. If good-unit count is zero, throughput is zero and minutes per good unit is not defined.

What the result means

The main result is the average number of good units produced per hour of actual equipment run time.

This rate excludes scheduled and unplanned non-running time. For calendar or planned-time capacity, use a time basis that includes the losses you want represented.

Given: 360 run minutes and 270 good units.

Calculation: Run hours = 360 ÷ 60 = 6 hours. Throughput = 270 ÷ 6 = 45 good units/hour. Minutes per good unit = 360 ÷ 270 = 1.333 min/unit.

Result: Good-unit throughput is 45 units/hour.

Interpretation: This is the observed rate while the equipment was running; additional downtime would reduce output over a full scheduled period even if this run-rate stayed unchanged.

Why use good units instead of total units?

Good units align the rate with acceptable output available for the next step or customer. If you need machine gross rate, use total output instead and label the metric accordingly.

Should setup time be included in run time?

Only if your throughput definition includes setup. For pure running throughput, exclude non-running setup; for elapsed-period productivity, use a broader time base.

What does zero good output mean?

The calculator reports zero units per hour. The reciprocal minutes-per-good-unit metric is undefined because there is no good unit to divide the run time across.

Can I compare throughput across different products?

Only with care. Different products may have different cycle standards, lot sizes, or quality requirements, so a lower unit rate can still represent normal or better performance.

How is this different from cycle time?

Throughput is good units per hour; cycle time is time per unit. They are reciprocal only when they use the same unit count and the same time basis.