Free Meta Ads Calculators
Quick math for decisions you make every week: Is your A/B winner real? Does your MER match what the platforms claim?
Use these free tools on live campaign data. No signup required. Each calculator links to a deeper guide on the same topic.
A/B Test Significance Calculator
Compare control vs. variants on conversions. Get statistical confidence, learning-phase warnings, and reach-parity checks before you scale a Meta ad winner.
MER Reality Check Calculator
Enter revenue, total marketing spend, and per-channel ROAS. See your marketing efficiency ratio and how much attributed revenue exceeds real revenue.
Related guides
- Meta ads testing framework: what to test, how to run fair A/B tests, kill and scale rules
- MER vs ROAS: which metric belongs in the board deck
- Facebook ads ROAS benchmarks: industry benchmarks and breakeven ROAS math
- Facebook ads CPA benchmarks: target CPA by category
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