1. Click-Through Rate (CTR)
CTR measures the percentage of people who click on your ad after seeing it.

2. Cost Per Click (CPC)
CPC is the average cost you pay for each click on your ad.

3. Cost Per Mille (CPM)
CPM is the cost for 1,000 impressions of your ad.

4. Conversion Rate (CR)
CR measures the percentage of clicks that result in a conversion (e.g., a sale, sign-up).

5. Cost Per Acquisition (CPA)
CPA is the cost to acquire a customer through your ad campaign.

6. Return on Investment (ROI)
ROI measures the profitability of your ad campaign.

7. Quality Score (QS)
QS is Google’s rating of the quality and relevance of your keywords and ads.

8. Ad Rank
Ad Rank determines the position of your ad on the search results page.

9. Impression Share
Impression Share is the percentage of times your ad was shown compared to the total eligible impressions.

10. Conversion Value Per Click (CVPC)
CVPC measures the average value generated from each click.

These formulas are essential for evaluating and optimizing your Google Ads campaigns.