Ad Cost Calculator
Calculate CPC, CPM, CPA, CTR, and conversion rate for an ad campaign.
Calculate CPC, CPM and CPA
Enter ad spend, impressions, clicks, and conversions to compare the cost of reach, traffic, and acquired users.
What is ad cost?
Ad cost is the amount spent to deliver a campaign and generate an outcome. CPC prices each click, CPM prices 1,000 impressions, and CPA prices each conversion. Together they show where spend turns into reach, visits, and customers or active wallets.
CPC, CPM and CPA: what they measure
CPC = ad spend ÷ clicks. CPM = ad spend ÷ impressions × 1,000. CPA = ad spend ÷ conversions. Use the same campaign and reporting period for every input. A conversion can be a signup, qualified wallet connect, or first transaction; define it before comparing campaigns.
An ad cost example
A campaign spends $2,400, gets 120,000 impressions and 3,000 clicks, and produces 120 conversions. CPC is $0.80, CPM is $20, and CPA is $20. CTR is 2.5%, while 4% of clicks convert. These figures explain different parts of the same funnel.
Why your CPA is only as good as your tracking
CPA divides spend by recorded conversions. Missing campaign tags, disconnected wallet identities, ad blockers, and inconsistent attribution windows can make that denominator too small and CPA look too high. Tag ad links with UTMs, choose a conversion event, and connect offchain visits to wallet activity before judging acquisition cost.
How to compare ad campaigns
Compare CPC and CPM only across similar audiences and placements. Then inspect CTR, click-to-conversion rate, CPA, retention, and attributed revenue. Cheap impressions or clicks are useful only when the people they reach complete the outcome your campaign is meant to drive.
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Your questions, answered
Answers to common questions about CPC, CPM, and CPA.
What is the CPC formula?
How do I calculate CPM?
What counts as a conversion for CPA?
Why can CPA differ between an ad platform and Formo?
Is a low CPC always good?
How can I improve ad cost efficiency?
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