PPC Calculator
Find your CPC, CPM, and CTR instantly from ad spend, impressions, and clicks — plus conversion rate, CPA, and ROAS if you add conversions and revenue.
Last updated August 30, 2026
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How to use the PPC calculator
- 1
Enter your ad spend, impressions, and clicks from your ad platform's report, or tap a preset to try sample numbers.
- 2
Your CPC, CPM, and CTR update instantly.
- 3
Add conversions and revenue if you have them, to also see conversion rate, CPA, ROAS, and ROI.
How these metrics are calculated
CPC = ad spend ÷ clicks. A $1,500 campaign that gets 3,000 clicks has a CPC of $0.50 — the cost of a single click, regardless of how many people saw the ad without clicking.
CPM = (ad spend ÷ impressions) × 1,000. The same $1,500 campaign shown 200,000 times has a CPM of $7.50 — the cost to put the ad in front of 1,000 people, regardless of clicks.
CTR = (clicks ÷ impressions) × 100. 3,000 clicks out of 200,000 impressions is a 1.5% CTR — the share of people who saw the ad and clicked it.
If you add conversions and revenue, the calculator also works out conversion rate (conversions ÷ clicks), CPA (spend ÷ conversions), and ROAS (revenue ÷ spend) the same way — each is just one number divided by another.
What each metric tells you
| Metric | Answers |
|---|---|
| CPC | How much does one click cost? |
| CPM | How much does 1,000 views cost, regardless of clicks? |
| CTR | What share of viewers actually clicked? |
| CPA | How much does one sale or sign-up cost? |
| ROAS | How much revenue came back per dollar spent? |
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Everyday uses for a PPC calculator
Sanity-checking ad platform numbers: quickly confirming the CPC or CTR a dashboard shows you, or reconciling numbers across two campaigns with different totals.
Budget planning: working out roughly how many clicks a given budget should produce at a target CPC, before a campaign even launches.
Comparing campaigns: lining up CPC, CTR, and CPA side by side for two campaigns or two time periods to see which is actually performing better.
Checking real profitability: once you know your product's margin, pair your ROAS here with our Margin / Markup Calculator to see whether a campaign is actually profitable, not just revenue-positive.
Need to work out a discount or markup instead of ad metrics? Try the Discount Calculator →
Frequently asked questions
Related guides
📖PPC Calculator Guide: CPC, CPM, CTR & ROAS Explained — A complete overview of the PPC Calculator — how CPC, CPM, CTR, CPA, and ROAS are each calculated from the same underlying campaign numbers.→📖CPC vs. CPM: Which Metric Actually Matters? — The difference between cost-per-click and cost-per-thousand-impressions pricing, and which one to focus on depending on your campaign's goal.→📖How to Calculate Click-Through Rate (CTR) — The exact formula for click-through rate, a worked example, and why there's no single universal benchmark for what counts as a good CTR.→
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