Marketing & Ads calculators
CPM, CPC/CTR, CPA, LTV:CAC, and CAGR calculators for evaluating ad performance and growth.
These calculators are for marketers and growth teams who need to evaluate ad performance without waiting on a dashboard that only reports whatever metric a platform decided to highlight. CPM tells you what you're really paying per thousand impressions; CPC & CTR separates what a click costs from how well an ad actually resonates with the audience seeing it; CPA shows your cost per conversion and, if you know your average order value and target margin, the maximum you can afford to pay before a campaign stops being profitable; LTV:CAC compares what a customer is worth over their full relationship with your business against what it cost to acquire them, using the standard 3:1 healthy-ratio benchmark; and CAGR expresses growth over multiple years as a single, comparable annual rate instead of a noisy year-over-year swing. Used together, these five numbers form the core vocabulary for judging whether ad spend is actually working — not just whether it's generating clicks or impressions, but whether it's generating profitable customers. Start wherever your current question is: cost efficiency (CPM, CPC), acquisition efficiency (CPA), long-term payback (LTV:CAC), or overall trajectory (CAGR).
CPM Calculator
Calculate your CPM (cost per 1,000 ad impressions) from total spend and impressions delivered — the standard way to price and compare display, video, social, and CTV inventory before you know a single click or conversion happened.
CPC & CTR Calculator
Calculate your CPC (what you pay per click) and CTR (how often people who see your ad actually click it) from ad spend, clicks, and impressions — two numbers that only tell the full story when read together.
CPA Calculator
Calculate your CPA (cost per acquisition) — what you actually pay for a sale, sign-up, or lead, not just a click or impression — and, optionally, the max CPA you can afford while still hitting a target margin.
LTV:CAC Calculator
Calculate customer lifetime value (LTV), customer acquisition cost (CAC), and the LTV:CAC ratio — the core unit-economics check for any subscription or repeat-purchase business, showing whether customers are worth more than it costs to acquire them.
CAGR Calculator
Calculate CAGR (compound annual growth rate) — the single, smoothed annual rate that explains a beginning-to-ending value over several years — used instead of a simple average growth rate because a plain average ignores compounding and can badly misstate what actually happened.
Frequently asked questions
Which metric should I track first — CPM, CPC, or CPA?
It depends on what your campaign is actually optimizing for. If you're running an awareness campaign paying for impressions, start with CPM. If you're running a direct-response campaign paying for clicks, CPC and CTR together tell you both cost and ad relevance. If the campaign is meant to drive an actual conversion — a sale, a lead, a sign-up — CPA is the number that matters most, since a cheap click that never converts isn't actually cheap.
What's a healthy LTV:CAC ratio, and how does it relate to CPA?
3:1 is the widely cited healthy benchmark — a customer should be worth roughly three times what it cost to acquire them. CPA tells you the cost of one conversion; LTV:CAC tells you whether that cost is actually sustainable once you account for how much revenue that customer generates over their full relationship with your business, not just their first purchase.
Why does CAGR matter if I already track monthly growth?
Monthly or year-over-year growth numbers can be noisy — a single strong or weak month can make a trend look better or worse than it really is. CAGR smooths that out into one constant annual rate that would produce the same overall change if applied every year, which makes it easier to compare growth across different time periods or against competitors without being misled by short-term volatility.