What is a normal win rate?

There is no universal figure, because it depends entirely on bid strategy and how contested the inventory is. Anywhere from a few percent to the high tens can be healthy. Judge it against your own campaign's pacing and CPM rather than a benchmark from a different buying setup.

My win rate is high but I am still under-delivering. Why?

Because win rate says nothing about how many auctions you entered. Winning 80% of a small number of bids delivers less than winning 10% of a large number. If bid volume is low, the constraint is targeting or throttling rather than price.

Should I raise my bid to improve win rate?

Only if under-delivery is the actual problem. Raising bids raises win rate and CPM together, so it buys delivery with margin. If the campaign is pacing fine, a low win rate is not a fault worth fixing — it means you are being disciplined about price.

Win Rate Calculator

Calculate the share of submitted bids that won their auction. Useful for diagnosing whether a campaign is bidding competitively — but it moves in both directions for opposite reasons, so it is one of the easiest metrics in programmatic to misread.

Impressions won

Bids submitted

Win rate

—

Enter both figures to calculate.

Runs in your browser · nothing sent, stored, or logged

Formula

Win Rate = (Impressions Won ÷ Bids Submitted) × 100

Wins divided by bids actually submitted — not by bid requests received. A DSP responds to only a fraction of the requests it sees, so the two denominators produce very different numbers from the same campaign.

Both a high and a low win rate can be bad

A low win rate usually means the bid is below market for the inventory being chased, and delivery will suffer. A high win rate is more ambiguous: it can mean the targeting is well matched, or it can mean you are consistently outbidding everyone by more than necessary and paying a premium you did not need to. A win rate near 100% on open-exchange inventory is almost always the latter. The useful reading is win rate alongside the CPM you are paying and the pace you are achieving — high win rate with easy pacing is a signal to test a lower bid.

Check which denominator your platform reports

Platforms differ on what they divide by. Some report wins over bids submitted, which is what this calculator does. Others report wins over bid requests received, which includes every request the DSP declined to bid on and produces a far smaller number. A campaign showing 2% in one platform and 30% in another has not changed behaviour — the denominators are different. Before comparing win rates across DSPs, or against any published benchmark, confirm what sits underneath the fraction.

Frequently asked questions

What is a normal win rate?: There is no universal figure, because it depends entirely on bid strategy and how contested the inventory is. Anywhere from a few percent to the high tens can be healthy. Judge it against your own campaign's pacing and CPM rather than a benchmark from a different buying setup.
My win rate is high but I am still under-delivering. Why?: Because win rate says nothing about how many auctions you entered. Winning 80% of a small number of bids delivers less than winning 10% of a large number. If bid volume is low, the constraint is targeting or throttling rather than price.
Should I raise my bid to improve win rate?: Only if under-delivery is the actual problem. Raising bids raises win rate and CPM together, so it buys delivery with margin. If the campaign is pacing fine, a low win rate is not a fault worth fixing — it means you are being disciplined about price.