User-entered operational arithmetic

Production metrics & OEE

Inputs

Planned production timePPTUser-entered planned production window excluding only time your organization defines outside the plan.

Stop timeSTUser-entered tracked stop time inside the stated planned production window.

Ideal cycle timeICTs/unitUser-entered fastest achievable cycle time under the declared process basis.

Total countNunitsAll pieces counted during the same stated production window.

Good first-pass countGunitsUser-classified first-pass good pieces; rework treatment must be consistent with the study.

Demand in windowDunitsRequired quantity over the same stated planned production window, used only for takt arithmetic.

Assigned operatorsnLpeopleUser-entered average assigned labor count over the stated production window.

Results

Takt time

s/unit

Run time

420

Actual throughput

1.1905

units/min

Ideal-window capacity

640

units

Availability

87.5

Performance

89.286

First-pass quality

Overall equipment effectiveness

Labor content per good unit

labor-min/unit

Machine utilizationU

87.5

Run = PPT−ST; A = Run/PPT; P = ICT·N/Run; Q = G/N; OEE = A·P·Q; takt = PPT/D

A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.

Calculation snapshot

Production metrics & OEE

Formula version 1.0.0

Conditions

Planned production time	480
Stop time	60
Ideal cycle time	45
Total count	500
Good first-pass count	480
Demand in window	600
Assigned operators	4

Calculated response

Takt time	48 s/unit
Run time	420 min
Actual throughput	1.1905 units/min
Ideal-window capacity	640 units
Availability	87.5 %
Performance	89.286 %
First-pass quality	96 %
Overall equipment effectiveness	75 %
Labor content per good unit	4 labor-min/unit
Machine utilization	87.5 %

Method

Run = PPT−ST · A = Run/PPT · P = ICT·N/Run · Q = G/N · OEE = A·P·Q · takt = PPT/D

Source

Nakajima, Introduction to TPM — OEE definition:

Boundaries

Declared time basis
Counts and downtime classified by user
User-entered ideal cycle
No target recommendation

This printout is a record of displayed inputs and deterministic formula output. It is not an approval, certification, or engineering conclusion.

Nearby: Milling removal rate · Drilling speed & time · Turning material removal · Milling cutting parameters

Method

Formula, when it applies, and when it does not

Calculate takt, run time, availability, performance, quality, OEE, throughput, capacity, labor content, and utilization from production records.

Run = PPT−ST; A = Run/PPT; P = ICT·N/Run; Q = G/N; OEE = A·P·Q; takt = PPT/D

When

Declared time basis
Counts and downtime classified by user
User-entered ideal cycle
No target recommendation

Don’t

This reports arithmetic from user-entered production records and uses the declared ideal cycle time. It does not validate downtime event classification, count integrity, rework policy, demand forecasting, labor allocation, targets, bottleneck behavior, shift calendars, routing, or a productivity conclusion.

Nakajima, Introduction to TPM — OEE definition