Startup runway and burn rate calculator
Model cash runway in minutes. Enter cash on hand, MRR, expenses, and monthly growth to see burn rate, runway length, and your breakeven month. Built for SaaS and AI startup founders.
Runway in months
See how long your cash lasts at today's burn rate and with growth.
Net burn clarity
Calculate true net burn after recurring revenue, not just gross expenses.
Breakeven target
Estimate when revenue catches expenses so you know when to raise or cut.
Enter your numbers
Use monthly values. Growth rate compounds monthly.
Tip for founders
Use conservative growth rates for planning. Share your scenario link with cofounders to align on runway.
Your runway
Results update instantly. Share a link to keep everyone aligned.
Runway with growth
8.8 months
Cash-out around Oct 2026
Runway at current burn
7.1 months
Net burn per month
$35,000 net burn
Breakeven
Not within 240 months
Breakeven not projected in this window.
Share your scenario
Share links include your inputs so others see the same runway.
How this runway calculator works
The model uses your cash balance, monthly recurring revenue, and expenses to estimate net burn. When you add a monthly growth rate, the calculator projects how revenue grows over time and when you reach breakeven.
1. Net burn
Net burn = expenses - revenue each month.
2. Base runway
Runway = cash / net burn at current revenue.
3. Growth runway
Revenue compounds each month to estimate breakeven.
This calculator provides directional guidance. Always validate with your finance model and cash plan.
Who this is for
Founders and finance leads at SaaS and AI startups who need a quick runway snapshot without a full spreadsheet. It is ideal for seed to Series A planning, investor updates, and hiring decisions.
Explore more free toolsFAQs
How is startup runway calculated?
Runway is the number of months your available cash can cover your net burn. Net burn equals monthly expenses minus monthly revenue. The calculator also models revenue growth to estimate a breakeven month.
What counts as burn rate?
Burn rate is your monthly cash outflow after revenue. Use operating expenses minus recurring revenue to capture the true net burn.
Does this tool store my data?
No. All calculations run locally in your browser and nothing is stored on the server.
Can I share results with my team?
Yes. Use the share button or copy the link to send the exact inputs and results to cofounders or investors.