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25 free calculators · No signup · Privacy-first
Free Marketing & SaaS Calculators
Twenty-five browser-based calculators we built for our own client work — SEO ROI, CAC/LTV, churn, MRR, sales velocity, market sizing, and more. All run in your browser, no inputs ever leave your device.
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SaaS & Unit Economics
💰
CAC & LTV Calculator
Customer acquisition cost, lifetime value, and an A–D unit-economic health grade.
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🎯
CAC Calculator
Acquisition cost with marketing vs sales split.
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📈
SaaS ARR Forecast
36-month MRR → ARR projection with exponential retention.
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💵
MRR Calculator
Net new MRR, NRR, gross + net churn, growth rate.
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📉
Churn Rate Calculator
Monthly + annual churn, retention rate, customer lifetime.
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🔥
Burn Multiple Calculator
David Sacks' SaaS efficiency metric: burn ÷ new ARR.
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⚡
Rule of 40 Calculator
Growth + profit margin ≥ 40% — SaaS health benchmark.
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Marketing & Advertising
🚀
SEO ROI Calculator
12-month organic revenue projection with realistic ramp curve.
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📣
Marketing ROI Calculator
Channel-level ROI + ROAS with margin-aware math.
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📺
CPM Calculator
Cost per 1,000 ad impressions — works three ways.
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🖱
CPC Calculator
Cost per click + CTR + CPA in one panel.
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💸
CPA Calculator
Cost per acquisition + LTV ratio + profit math.
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👁
CTR Calculator
Click-through rate with benchmark verdict per platform.
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🎯
Lead Generation ROI
CPL → MQL → CPA → channel ROI.
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Conversion & CRO
🔄
Conversion Rate Calculator
CR + RPV + lift modeling with revenue uplift.
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🛒
AOV Calculator
Average order value + lift scenarios.
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🛍
Cart Abandonment Calculator
Cart abandonment + revenue lost + email recovery.
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🧪
A/B Test Sample Size
Two-proportion z-test with days to significance.
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Finance & P&L
📊
Gross Margin Calculator
Gross profit + margin + markup with industry benchmark.
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⚖️
Break-Even Calculator
Units, revenue, and months to break even.
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Sales
Customer & Social
😊
NPS Calculator
Net Promoter Score with industry benchmarks.
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❤️
Engagement Rate Calculator
Social media engagement rate per platform.
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Strategy & Ops
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Same calculators, packaged as a free Chrome / Firefox / Edge / Opera extension. EN + RU UI, 31 KB, no tracking. Built by Global One Digital.
