How to use this calculator
100,000 impressions, 1,800 clicks, and $2,500 spend produce CTR, CPC, and CPM in one view.
Advertising
Ad Metrics Calculator
Convert between impressions, clicks, spend, CPM, CPC, and CTR without opening a spreadsheet.
Formula
CTR = clicks / impressions. CPC = spend / clicks. CPM = spend / impressions x 1,000.
What the result means
This page explains the arithmetic behind the estimate so you can adjust assumptions before using the number in planning.
Read the guide
Understand CPM, CPC, and CTR together so you can read ad performance without spreadsheet confusion.
CPM, CPC, and CTR Explained Without a SpreadsheetCommon questions
Why combine CPM, CPC, and CTR?
These metrics are connected and are easier to understand together.
Can this predict future clicks?
No. It explains current or assumed campaign math.
What if clicks are zero?
The calculator avoids division errors and shows zero for unavailable ratios.