40 is the example result. Read it using the units and relationship stated below.
Maximum CPL uses target cac, lead-to-customer (%).
Separating campaign efficiency from business profit
For maximum cpl, the relationship is Result = [Target CAC] × [Lead-to-customer (%)] ÷ 100. The amount depends on the supplied target cac, lead-to-customer (%), rather than a live market price or a value imported from another record. Campaign ratios depend on the event being counted. A click, a submitted form, a qualified opportunity and a paying customer are separate outcomes. Combine spend and events from the same campaign window before comparing acquisition costs.
Source and result record
For maximum cpl, retain Target CAC, Lead-to-customer (%) together with the output. Record the date of the source values and the unit convention used in the form. That record separates a change in the underlying case from a change in how the information was entered. A saved result without its source values cannot show which assumption produced it.
Example with the supplied inputs
Target CAC: 200; Lead-to-customer (%): 20. Result: 40. The values are illustrative.
Compare one changed input
Target CAC changes from 200 to 220. The result becomes 44. All other inputs remain fixed.
Calculation rule
Result = [Target CAC] × [Lead-to-customer (%)] ÷ 100
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Target CAC | 200 | Use the source quantity represented by target cac. Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Lead-to-customer (%) | 20 | Enter lead-to-customer (%) on the percentage scale used in the formula (20 means 20%, not 0.20). Keep its base and reporting period consistent with the other inputs. |
Output: 40 is the example result. Read it using the units and relationship stated below. Use the formula to distinguish a cash amount, count, percentage or ratio.
How to use the page
Collect the inputs
Gather Target CAC, Lead-to-customer (%). Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Target CAC on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 40.
Change Target CAC from 200 to 220 while keeping every other value fixed. The result becomes 44. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.
Content updated: October 11, 2026