What is the CPC & CPM Calculator?
CPC (cost per click), CPM (cost per mille, i.e. per 1,000 impressions), and CTR (click-through rate) are the core metrics for evaluating digital ad campaigns on Google Ads, Meta Ads, and other platforms.
Enter your total ad spend along with the number of impressions and clicks the campaign generated to instantly see all three metrics — useful for comparing campaign efficiency or estimating budgets.
CPC & CPM Calculator Formula & How It Works
- Ad Spend = total amount spent on the campaign
- Impressions = number of times the ad was shown
- Clicks = number of times the ad was clicked
- CTR = percentage of impressions that resulted in a click
CPC measures efficiency per click, CPM measures cost per exposure regardless of clicks, and CTR measures how compelling the ad is. A low CPC with a low CTR can still mean an inefficient campaign if conversions are also low — these metrics are best read together.
Worked Examples
Spend ₹10,000, Impressions 2,00,000, Clicks 1,000
CPC = 10,000/1,000 = ₹10. CPM = (10,000/2,00,000)×1000 = ₹50. CTR = (1,000/2,00,000)×100 = 0.5%.
Spend ₹5,000, Impressions 50,000, Clicks 750
CPC = ₹6.67. CPM = ₹100. CTR = 1.5%.