SaaS Burn Rate & Runway Calculator
SaaSRunway is a free calculator for SaaS founders, indie hackers and startup operators. Work out your monthly SaaS burn rate, infrastructure and operating costs, and cash runway in minutes. Add hosting, databases, AI APIs, software subscriptions and payment fees, then see how long your current cash position can support the business.
Free to use. No signup. Calculations run in your browser.
Calculate Your SaaS Burn Rate
SaaSRunway totals every recurring cost in your stack into a single monthly burn figure, then shows what each service contributes and how that burn compares with your monthly revenue.
Understand Your SaaS Runway
Your cash runway is how long your cash reserves last at your current burn rate. SaaSRunway projects cash month by month, factoring in revenue, growth and churn, and reports an estimated runway with a best and worst case range.
Track Your SaaS Stack Costs
Model hosting, cloud infrastructure, databases, AI APIs, storage, monitoring, email, communications, analytics, payment processing and development or software subscriptions, with free and paid plan options for each provider.
Analyze Your Monthly Operating Costs
See monthly operating costs ranked by service, each as a share of burn, with cost per active user and gross margin, so you can find the services worth renegotiating or removing.
Model Growth, Churn, and Usage
Add monthly user growth, churn and paid conversion, and set how each service scales with users or revenue, to project a 12-month financial forecast instead of a single flat number.
Explore Different Runway Scenarios
Compare what-if scenarios such as more users, higher API usage, price changes or cutting software subscriptions, and see the effect on your runway before you commit to a decision.
Your Financial Data Stays in Your Browser
There is no account and no billing integration. Everything you enter is stored in your browser and never uploaded. Projections are estimates, not financial or accounting advice.
How SaaSRunway Works
Add your stack, enter cash, users and revenue, then review your estimated runway, cost breakdown and scenario analysis. It takes about two minutes, and nothing is sent to a server.