CPC Calculator
Use your own numbers after reviewing the formula and worked example.
Quick answer
CPC measures spend per click, CPM measures spend per thousand impressions, and CTR measures clicks as a percent of impressions.
Formula or method
Keep units, percentages and time periods consistent. The formula is useful as a transparent check on the calculator result and helps explain why changing one input changes the answer.
Step-by-step
- Use spend, clicks and impressions from the same period.
- Calculate CPC.
- Calculate CPM.
- Calculate CTR.
Worked example
With $500 spend, 1,000 clicks and 100,000 impressions: CPC=$0.50, CPM=$5.00 and CTR=1%.
How to interpret the result
These metrics describe traffic economics, not profitability by themselves.
When the answer is used for a purchase, loan, payroll decision, construction order, school grade, health estimate or other real-world choice, verify the assumptions that matter in that context. Accurate arithmetic still depends on accurate inputs.
Common mistakes
- Mixing date ranges.
- Forgetting ×1000 in CPM.
- Treating high CTR as proof of strong sales.
Frequently asked questions
Can CPC be calculated without spend?
No.
What does CTR measure?
Clicks divided by impressions.
Why use CPM?
It standardizes cost per 1,000 impressions.