Max CPC Bid Calculator
Contribution times conversion rate.
Maximum bid
$0.47
break-even is $0.58
Maximum bid is contribution times conversion rate — the expected value of a click. Doubling conversion rate doubles what you can afford to bid, which is why landing page work outperforms bid tuning almost every time.
How the Max CPC Bid Calculator works
Maximum bid is contribution per order times conversion rate — the expected value of a click. Doubling conversion rate doubles what you can afford to bid, which is why landing page work outperforms bid tuning almost every time.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
How do I set a maximum bid?
Contribution per order times conversion rate gives the break-even click value. Bid below it by whatever profit you want to keep.
Should different keywords have different bids?
Yes, in proportion to their conversion rates. One bid across a campaign systematically overpays for weak terms and underpays for strong ones.
How does improving the landing page help?
Directly and doubly — a higher conversion rate raises the affordable bid, which wins more impressions, which raises volume. Bid changes only redistribute the traffic you can already afford.
What about automated bidding?
Automated strategies need a target that comes from the same arithmetic. Handing the algorithm a target ROAS you have not derived from margin just automates a bad decision faster.