Calculate your runway
Amounts in ₹ lakh. Assumes constant monthly net burn.
Interactive tool
How long does
your cash last?
Enter cash and monthly revenue and expenses in ₹ lakh. This local calculator gives the arithmetic immediately, without signing in or calling a model. Then use an AI finance chief to examine the assumptions.
The runway formula.
Monthly net burn is monthly cash expenses minus monthly cash revenue. When net burn is positive, runway in months is cash balance divided by monthly net burn. For example, ₹24 lakh cash with ₹7 lakh expenses and ₹5 lakh revenue gives ₹2 lakh monthly net burn and 12 months of runway. All inputs must use the same currency and unit.
What this calculation leaves out.
A constant-burn calculation does not account for changing revenue, delayed collections, debt repayments, upcoming hiring or one-off purchases. Accrual revenue may differ from cash received. Update the inputs when the business changes and use a separate scenario for known events rather than treating this simple result as a forecast.
What if revenue covers expenses?
If monthly cash revenue equals or exceeds expenses, these inputs do not produce positive net cash burn. The calculator reports that finite burn-based runway is not defined under the constant-rate assumption. This does not mean a business cannot run out of cash: timing, reserves and exceptional payments still matter.
What to bring to your chief
- Cash currently available, in ₹ lakh
- Monthly cash revenue and cash expenses, in ₹ lakh
- The same reporting period for both monthly inputs
Try this task
Our cash is ₹24 lakh, monthly cash revenue is ₹5 lakh and monthly cash expenses are ₹7 lakh. Calculate net burn and runway, then ask about collections, one-off payments and expected changes before forecasting.
Sign in for a written first result before payment setup. Computer work needs an active trial or paid plan and remaining allowance.
Common questions
Is the calculator an AI response?
No. It runs the formula locally in your browser. Asking your finance chief is a separate conversation.
Can I use another currency?
The arithmetic works for any consistent currency and unit. This display is labelled ₹ lakh; convert all three inputs consistently if using it for a different unit.
Related workflows
AI CFO for startup financial analysis
Give an AI finance chief your revenue, expenses and cash balance. Review runway, budget assumptions and saved financial reports using computer tools.
Explore this workflow ↗Build an AI team for your startup
Start with one AI chief for a real startup task. Add specialists as work grows, share business context and review deliverables within a clear plan allowance.
Explore this workflow ↗
AI board meetings with your existing chiefs
Ask your existing AI chiefs to discuss a business question. Read saved contributions, review the synthesis and follow up in the same conversation.
Explore this workflow ↗