CPC calculator
CPC is spend divided by clicks. A 1,000 budget buying 2,000 clicks is 0.50 per click. Whether that is cheap depends entirely on the revenue per click, which the same set of numbers gives you.
How to calculate CPC
Cost per click is only half a number. The other half is revenue per click, and the campaign works whenever the second exceeds the first. That framing is more useful than any industry benchmark, because it is specific to your margins and conversion rate: a 4 CPC is excellent for a business converting at 5% on a 300 order and ruinous for one converting at 1% on a 30 order. Bidding to a target CPC without knowing revenue per click is guessing.
Questions
Divide total ad spend by the number of clicks it produced.
One below your revenue per click. Absolute benchmarks are close to useless across different margins and order values.
Total revenue divided by clicks. If it exceeds CPC, the campaign is profitable at the top line.
More competition in the auction, a lower quality score, or a shift toward more expensive keywords in the mix.
No; for CPA or ROAS. A lower CPC that brings worse traffic makes the account worse, not better.