Free SaaS Calculators — Pricing, MRR, Churn & Growth Tools
18 free calculators for SaaS founders and operators. Model pricing, forecast MRR, measure churn, calculate LTV and CAC, and stress-test your runway — no login, no signup, all in your browser.
What are SaaS calculators?
The metrics that make or break a subscription business
SaaS calculators are browser-based tools that help subscription business founders and operators model the core metrics that determine product health and investor readiness — MRR, churn rate, customer lifetime value, CAC, NRR, and cash runway. They replace manual spreadsheets with instant, structured outputs.
Browse all 18 toolsEvery SaaS metric, one free calculator
Open any tool and start calculating instantly. No account, no email wall, no paywall.
SaaS Pricing Calculator
Model pricing tiers and forecast monthly recurring revenue.
SaaS Runway Calculator
Calculate cash runway and project your break-even month.
Churn Rate Calculator
Measure customer churn, logo retention, and revenue retention.
Customer LTV Calculator
Estimate lifetime value per customer and LTV:CAC ratio.
MRR Growth Simulator
Simulate monthly recurring revenue growth over 24 months.
CAC Calculator
Calculate customer acquisition cost by channel and campaign.
Build vs Buy Calculator
Analyse total cost of ownership for make vs buy decisions.
MVP Cost Estimator
Estimate software development cost for your MVP build.
Cold Email ROI Calculator
Calculate return on investment for outbound email campaigns.
Sales Pipeline Calculator
Forecast pipeline value and revenue from conversion rates.
Sprint Velocity Calculator
Plan agile sprints and track team delivery capacity.
Custom Software ROI Calculator
Calculate return on investment for a custom software build.
Equity Dilution Calculator
Model founder and investor equity through funding rounds.
Tech Stack Recommender
Get a personalised technology stack recommendation for your SaaS.
Break-Even Calculator
Find the revenue point where costs and income balance out.
SaaS Valuation Calculator
Estimate company valuation using ARR multiples and benchmarks.
NRR Calculator
Measure net revenue retention from expansions and churn.
Payback Period Calculator
Calculate months to recover customer acquisition cost.
What each SaaS calculator measures
| Tool | What it calculates |
|---|---|
| SaaS Pricing Calculator | Tier pricing, MRR forecast, revenue per plan |
| SaaS Runway Calculator | Cash runway (months), break-even date |
| Churn Rate Calculator | Monthly/annual churn %, logo and revenue retention |
| Customer LTV Calculator | Lifetime value, LTV:CAC ratio, payback period |
| MRR Growth Simulator | 24-month MRR, ARR trajectory, growth rate |
| CAC Calculator | Customer acquisition cost by channel |
| Build vs Buy Calculator | Total cost of ownership, ROI, break-even |
| MVP Cost Estimator | Development cost, timeline, team size |
| Cold Email ROI Calculator | Campaign ROI, revenue per send, cost per lead |
| Sales Pipeline Calculator | Pipeline value, weighted revenue, close rate |
| Sprint Velocity Calculator | Story points per sprint, capacity, delivery date |
| Custom Software ROI Calculator | Build ROI, savings vs off-the-shelf, payback |
| Equity Dilution Calculator | Founder equity after funding rounds, dilution % |
| Tech Stack Recommender | Recommended stack by use case, team size, budget |
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Common questions about SaaS metrics
SaaS calculators cover the five core subscription metrics: MRR/ARR (revenue), churn rate (customer loss), customer LTV (revenue per customer over their lifetime), CAC (cost to acquire a customer), and runway (months until cash runs out). Together they give founders and operators a complete view of subscription health.