50+ Free Tools · No Signup · Browser-Only
Smarter numbers,
faster decisions—
all in one place.
Free online calculators for marketing, finance, statistics, SaaS metrics, and data utilities — built for founders, analysts, marketers, and everyday users who work with numbers.
Free online calculators for marketers, founders, and finance teams
GenAlpha Tools is a browser-based library of free online calculators for US users, covering marketing ROI, CAC, LTV, break-even analysis, mortgage planning, retirement estimates, statistics, A/B testing, SaaS metrics, and practical data utilities.
Every tool is designed for fast inputs, clear outputs, worked examples, and simple explanations so you can make decisions quickly without spreadsheets or signups.
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Popular workflows
Start with ROI, CAC, and LTV calculators for growth analysis, or use mortgage, retirement, and compound interest tools for personal finance planning. You can also explore A/B testing, standard deviation, and CSV/JSON utilities for data-heavy workflows.
🔥 Most popular
ROI Calculator (Marketing Campaign)
Calculate return on investment for any marketing campaign in seconds. Free online ROI calculator for US marketers and founders.
Calculate Now → 🎯CAC Calculator (Customer Acquisition Cost)
Calculate Customer Acquisition Cost in seconds. Track sales + marketing spend per new customer for any SaaS or D2C business.
Calculate Now → 💎LTV Calculator (Customer Lifetime Value)
Estimate Customer Lifetime Value for SaaS, subscription, and D2C businesses. Free online LTV calculator with churn input.
Calculate Now → ⚖️Break-Even Calculator
Find the exact units and revenue needed to break even. Free online break-even point calculator for any business.
Calculate Now → σStandard Deviation Calculator
Calculate sample and population standard deviation, variance, mean, and range from any list of numbers. Free online tool.
Calculate Now → 🅰️🅱️A/B Test Calculator
Run a two-proportion z-test on your A/B test results. Free A/B testing calculator with significance and lift.
Calculate Now → 🪙Compound Interest Calculator
Calculate compound interest on any investment with monthly contributions. Free US compound interest calculator.
Calculate Now → 🏠Mortgage Calculator (US)
Calculate monthly mortgage payment with PITI breakdown. Free US mortgage calculator with amortization.
Calculate Now → 🏖️Retirement Calculator (US)
Calculate retirement savings needed and projected nest egg. Free US retirement calculator with 401(k), IRA, SS.
Calculate Now → 💰Monthly Recurring Revenue (MRR) Calculator
Calculate MRR from active subscriptions. Free MRR calculator for US SaaS founders and finance teams.
Calculate Now → 🔥Burn Rate Calculator
Calculate monthly burn rate and runway. Free burn rate and runway calculator for US startups.
Calculate Now → 📄CSV to JSON Converter
Convert CSV to JSON instantly in your browser. Free CSV to JSON converter with custom delimiter support.
Calculate Now → 🤖AI Dataset Summary Generator
Upload a CSV and get an instant AI-generated summary with key statistics, patterns, and suggested next analyses. Free.
Calculate Now →Latest from the blog
View all →How to Calculate Marketing ROI (With Real Campaign Examples)
Most marketers calculate ROI wrong by ignoring fully-loaded costs. Here's the right formula, US benchmarks, and how to defend your number in front of…
CAC vs LTV: The Single Ratio That Decides If Your Business Scales
If your LTV:CAC ratio is below 3:1, you're buying customers at a loss. Here's how to calculate both numbers correctly and what to do…
A/B Test Statistical Significance: What It Really Means (And When to Stop a Test)
Stopping a test the moment p < 0.05 hits is the most expensive mistake in conversion optimization. Here's what significance actually means.
Compound Interest: The Most Powerful Formula in Personal Finance
Albert Einstein supposedly called it the eighth wonder of the world. Here's the formula, why time matters more than rate, and how to model…
SaaS Metrics 101: MRR, ARR, Churn, and Net Revenue Retention
Every SaaS founder eventually faces an investor question they can't answer. This guide is the cheat sheet for every metric — formula, benchmark, and…
Break-Even Analysis: How to Find Your Profit Threshold
Break-even isn't just an accounting exercise — it's the fastest way to pressure-test a price, a product launch, or a hiring decision.