CPM, CPC, CTR & CPA Calculator
Paste the six numbers from an ad platform and get a consistent set of funnel metrics. Useful for QA, cross-platform reporting and spotting where performance changed.
iUse unrounded values from the same platform, date range and attribution view.
Use it without guessing.
- 01Enter impressions, clicks and spend.
- 02Optionally add conversions and revenue.
- 03Review traffic, conversion and revenue efficiency together.
What the number means
CPM measures cost per thousand impressions, CPC measures cost per click, and CTR measures the share of impressions that became clicks.
CPA and conversion rate depend on what you count as a conversion. Keep that definition consistent across periods and platforms; otherwise the comparison is misleading even when the arithmetic is correct.
Before you rely on the output
Can I leave conversions or revenue blank?+
Yes. Traffic metrics still calculate. Conversion and revenue metrics will display only when the required inputs are above zero.
Why does my platform show slightly different values?+
Platforms may round inputs, use modelled conversions, apply currency conversion or update attribution after the reporting window.
Are percentages entered as whole numbers?+
This tool derives percentages from counts, so enter raw impressions, clicks and conversions rather than pre-calculated rates.