UA Ledger · Measurement Lab · draft for review
Synthetic teaching inputs. No real campaign results or industry defaults. Change the values to inspect the model. Calculations run locally; this page sends no data and does not retain inputs after closing.
Enter spend, observed conversions and a completion fraction supported by comparable mature cohorts if such evidence exists. Divide observed conversions by that fraction to obtain the scenario total, then calculate spend per scenario conversion. Preserve both outputs in the review. Do not replace the actual conversion count with the adjusted figure in a table labelled observed performance.
Only completion varies; all other inputs are held constant. This is not a probability range.
spend/observedobserved/completionspend*completion/observedAdditional constraints: (completion<=1). The field minimums also apply.
No completion fraction is supplied by campaign evidence here. The calculator neither predicts actual late conversions nor substitutes for the platform’s own documented lag estimates and eligibility rules.
About conversion lag reporting · primary documentation checked 19 September 2026.