CPM CPC CPA Calculator
Calculate CPM, CPC, CPA, CTR, conversion rate, ROAS and ROI for ad campaigns. 8 currencies, print, CSV export, shareable URL. Free, client-side.
Enter ad campaign data to compute CPM, CPC, CPA, CTR, conversion rate, and (with revenue) ROAS / ROI. 8 currencies. Print, export CSV, or share a URL that preserves your inputs.
How to Use CPM CPC CPA Calculator
- Pick a currency.
- Enter total cost, impressions, clicks, conversions. Add revenue if you want ROAS/ROI.
- Results update live as you type. Each card shows the formula so you can verify the math.
- Use Print for a clean one-page report, Download CSV for a spreadsheet, or Share URL to send the calculation to colleagues with inputs preserved.
Frequently Asked Questions
What is CPM?
Cost Per Mille (Latin for “thousand”) is the cost per 1000 impressions, computed as (cost / impressions) x 1000. The “mille” is why it is CPM, not CPK. Used in brand-awareness campaigns where reach matters more than action.
What is CPC?
Cost Per Click is cost / clicks, the cost you pay each time someone clicks your ad. Lower is better assuming click quality is constant.
What is CPA?
Cost Per Acquisition (or Action) is cost / conversions, the cost for each successful conversion (purchase, signup, download). The most direct measure of efficiency for action-oriented campaigns.
What is CTR?
Click-Through Rate is clicks / impressions x 100, the percentage of impressions that became clicks. Higher CTR usually means your creative and targeting resonate. Typical: 2-5% for search, 0.5-1% for display.
What is the conversion rate?
conversions / clicks x 100, the percentage of clicks that became actions. Typical is 1-5% across most industries, much higher for warm-audience retargeting.
What is ROAS?
Return on Ad Spend is revenue / cost, reported as a multiplier (3x means three dollars of revenue per dollar of ad spend). Unlike ROI, it does not subtract cost, so it is a gross return.
What is ROI?
Return on Investment is (revenue - cost) / cost x 100, expressed as a percentage. 200% ROI means you got your investment back plus another two times on top.
ROAS vs ROI, which to use?
ROAS is simpler and ignores cost recovery. ROI subtracts cost, so a campaign with ROAS 1x has ROI 0% (broke even). For finance teams use ROI; for ad ops ROAS is easier to communicate.
What about benchmarks?
Benchmarks vary widely by industry, platform, audience, and goal. The numbers shown by this tool are your numbers; comparison requires external industry data.
Is anything uploaded?
No. Everything is calculated in your browser.