First Pass Yield | CWX Workflow Tools
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Ops Console / Module 04 / First Pass Yield

First Pass Yield

Find the yield hiding between the steps.

A process can look healthy at every step and still leak. First pass yield measures how much gets through each stage right the first time, then multiplies them into rolled throughput yield, the real share of work that needs no rework. The gap is your hidden factory.

Time10 min
FormatYield calculator
SavesPDF · JSON record
← Process SigmaQuality module

What it is

First pass yield is the share of work that gets through a step right the first time, with no rework or scrap. Multiply every step and you get rolled throughput yield, the true end-to-end pass rate.

When to use it

When a process looks fine step by step but jobs still slip. Small losses at each stage multiply into a surprisingly low overall yield, the hidden factory.

How to run it

For each step, enter how many units went in and how many passed first time. The tool shows each step yield and the rolled total.

#Process stepUnits inPassed first timeFPY
–
Rolled throughput yield
–
Weakest step
0
Steps
Saved

Worked example: a booklet job

Print passes 98%, fold 97%, stitch 96%, trim 99%. Each looks healthy. But rolled together, 0.98 x 0.97 x 0.96 x 0.99, the real first-time yield is about 90%. One booklet in ten needs a touch somewhere. The weakest step is stitching, so that is where a fix pays back the most.