Free calculators for SaaS metrics, paid ads, and finance
MetricKit helps you start from the decision you are trying to make, then move into the right calculator or guide for CAC, LTV, ROAS, payback, runway, and more.
Choose your task
Start from the business question, not just the metric name. Each hub below is organized around the jobs users usually need to get done first.
Start with the operating question, not the metric name. Most SaaS teams are trying to judge growth quality, payback, retention, or capital efficiency.
- Check if acquisition is really paying back
- Model unit economics end to end
- See whether recurring revenue is holding up
Paid ads decisions get better when you start from the job to be done: set spend guardrails, diagnose creative and funnel weakness, or decide whether attribution is trustworthy enough to scale.
- Set spend guardrails before you scale
- Watch diminishing returns as spend rises
- Troubleshoot the funnel when clicks stop converting
Finance work usually starts with one of two questions: how much time do we have, or what is the asset actually worth under a stated set of assumptions.
- Estimate runway and burn pressure
- Check debt service and downside flexibility
- Build or challenge a valuation range
Popular calculators
Browse all →Popular guides
Browse all →Popular definitions
Browse all →What you get
- Clear formulas and assumptions (so results are explainable).
- No login required.
- Fast pages and simple navigation.