What this calculadora actually does

Cash Runway calculadora is built to give you a clean, explainable answer without the usual wall of ads — type the numbers, read the result, keep moving.

Capital efficiency decisions live and die in these calculations. Pull last month’s P&L before you start — then model the numbers and the rest of this page explains what the answer means.

How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

Following the method end to end

Here's what happens when you plug real numbers in.

How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

When to use this calculadora

Cash Runway calculadora is aimed at people arriving with questions like these:

"Startup runway formula"
"Cash runway months"
"Net burn rate"
"What is cash runway"
"How to calculate cash runway"
"Cash runway formula"

When to reach for something else

Every tool has an edge where it stops being the right answer. Cash Runway calculadora is no exception:

For legally binding tax or medical decisions — cross-check with HMRC, NHS or a qualified professional.
For very large or very small extremes the rounding error outgrows the useful precision.
When the underlying rate or threshold has changed since the page was last reviewed — always verify with the primary source.
When the input you have is already a derived figure (net of something) — feeding it in as "gross" will double-subtract.

Mistakes we see over and over

Every time you model the numbers for a new scenario, one of these creeps in — it's worth knowing them ahead of time.

Entering a monthly figure into an annual field (or vice versa).
Forgetting a leading zero on decimals (.5 instead of 0.5 breaks some inputs).
Trusting a single reading when the underlying number naturally fluctuates.
Comparing two answers that used different assumptions — always re-run both.
Skipping the formula box. If you don’t understand the method, the answer is just a vibe.

The sources behind the numbers

Where the maths needs an external authority, we cross-check against:

Y Combinator
Bessemer Venture Partners

Works well alongside

If this question keeps coming up for you, the same cluster of tools usually comes next:

Burn Rate calculadora — Break down gross and net burn rate from expenses and revenue, and translate into default-alive vs default-dead status.
SaaS MRR calculadora — Work out Monthly Recurring Revenue — new, expansion, contraction and churned — plus net new MRR and MRR growth rate.
Valuation Multiples calculadora — Estimate a SaaS or service-business valuation from ARR/EBITDA/revenue using current-year SaaS public and private multiples.

How we keep this accurate

Our calculadoras run on pure, unit-tested functions — the same logic lives in the browser and in the CI test suite. When tax rates, thresholds or official figures move, the update lands within 24 hours of the announcement. You can read the editorial policy and corrections policy.

Found an out-of-date number on Cash Runway calculadora or anywhere else in the Business toolkit? Send it to the editorial desk and we'll patch it. Or browse the full calculadora directory for the next tool you need.

Frequently asked questions

Startup runway formula?

Short answer: feed the figures into the Cash Runway calculadora widget and it'll show the working. How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

Cash runway months?

Quick version: open the Cash Runway calculadora widget at the top of the page. How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

Net burn rate?

Practically speaking, this question usually arrives alongside Burn Rate calculadora, SaaS MRR calculadora, Valuation Multiples calculadora. The Cash Runway calculadora handles the specific case above; the others cover adjacent ground.

What is cash runway?

Here's the plain-English summary: every figure is cross-checked against Y Combinator and the wider data. If you notice a stale rate, email the editorial desk and we'll patch it in under 24 hours.

How to calculate cash runway?

In one line: yes, everything runs in your browser. No inputs are sent to our servers or any third party, nothing is logged and nothing persists after you close the tab.

Cash runway formula?

Put simply, Cash Runway calculadora is free to use, free to share and free to embed — pass the URL around a class, a slack channel or a family chat. The editorial policy covers attribution.

Cash runway example?

Short answer: the short method: write the inputs in the units shown, run the calculation, then sense-check the answer against an order-of-magnitude estimate in your head.

Cash runway worked example?

Quick version: if the result surprises you, run it a second time with slightly different inputs — small swings often reveal a unit or rounding issue in the original figures.

Cash runway explained?

Practically speaking, a calculadora is a sanity check, not a verdict. For anything legally binding — contracts, tax filings, medical decisions — bring the figure to a qualified professional as a starting point.

Cash runway definition?

Here's the plain-English summary: How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes. The page walks through the method in full so you can answer follow-up questions without guessing.

Cash runway meaning?

In one line: open the Cash Runway calculadora widget at the top of the page. How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

Cash runway step by step?

Put simply, open the Cash Runway calculadora widget at the top of the page. How many months of runway you have — cash balance divided by net burn — with a forward projection for hires or price changes.

How it works