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Witsberry

Your CTO execution layer. For funded, distribution-ready founders who need production-grade software built for scale, revenue, and investment.

128 City Road, London, EC1V 2NX, United Kingdom

33/54 Sinna Thoana Road, Kattankudy, 30100, Sri Lanka

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CTO Insights

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Based in London, UK

HomeFree ToolsStartup Runway Calculator

Startup Runway Calculator

Not just cash ÷ burn. Model hiring plans, revenue growth, and 3 scenarios to know your real runway and your exact fundraising deadline.

No sign-up requiredFree foreverResults in seconds
1
Cash
2
Costs
3
Growth
4
Results

Step 1 of 3

Your Cash Position

How much money do you have and how much is coming in?

$

Actual cash in your bank account right now. Not projected revenue, real money you can spend today.

$

Cash actually received this month, not invoiced. Pre-revenue? Enter 0.

How It Works

1

Net Burn Rate

We calculate your real monthly cash loss: total expenses minus cash revenue. Most tools use gross burn, which makes runway look worse than it is. Net burn is what actually matters.

2

Dynamic Forecasting

We factor in planned hires (which raise your burn), revenue growth (which lowers it), and amortize one-time costs so spikes don't distort your true average burn.

3

Fundraising Deadline

A round takes 3-6 months to close. We subtract that buffer from your zero-cash date to give you the date you must START raising, not the date you run out.

Frequently Asked Questions

Built by Witsberry

Your runway is real. Your MVP doesn't have to take 6 months.

Most founders burn 3-5 months of runway just getting their MVP built. Witsberry delivers a production-ready, investor-ready product in weeks, so you spend less cash getting to traction and stretch your runway further. 50+ products shipped. We tell founders what NOT to build.

Book a Free CTO Strategy CallExplore All Free Tools

Zero obligation · 30 minutes · We tell you what NOT to build

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