Product Attach Rate Calculator
Measure the share of eligible purchases that also include a defined add-on. The tool shows the method and key assumptions so you can inspect how the input values lead to the estimate.
How to use this calculator
- Enter eligible orders with an add-on using the unit and definition shown beside the input.
- Enter eligible core-product orders using the unit and definition shown beside the input.
- Check that all values refer to the same time period and scenario.
- Review the outputs alongside the assumptions before using them in a decision.
Formula and assumptions
Attach rate=orders with add-on/eligible core-product orders ×100%.
- Define eligible orders consistently and avoid counting multiple add-ons as multiple attached orders if the metric is order-based.
- The estimate is calculated from values you enter. It does not connect to external accounts, obtain live prices, or validate local regulations or engineering specifications.
Worked examples
Worked example
342 attached orders out of 1,800 eligible orders gives 19%.
Enter the count with an add-on and the full eligible-order count.
Use a consistent add-on definition when comparing stores or periods.
Understanding the result
Define eligible orders consistently and avoid counting multiple add-ons as multiple attached orders if the metric is order-based.
Change one input at a time to see how sensitive the output is to that assumption.
Important notes
Define eligible orders consistently and avoid counting multiple add-ons as multiple attached orders if the metric is order-based.
Frequently asked questions
What formula does the Product Attach Rate Calculator use?
Attach rate=orders with add-on/eligible core-product orders ×100%.
What should I verify before relying on the result?
Define eligible orders consistently and avoid counting multiple add-ons as multiple attached orders if the metric is order-based.
Can I compare different scenarios?
Yes. Change one assumption at a time, keep units and definitions consistent, and save the inputs used for each comparison.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.