Build a Startup Runway Calculator with Claude Code
Business planning tool that calculates how long startup funding will last based on burn rate. Startup founders and investors use it to plan fundraising and manage cash flow effectively.
The Claude Code prompt
Build a Startup Runway Calculator web app. People search for "startup runway calculator" about 40 times a month, plus related searches like "startup burn rate calculator", "runway calculator", "startup funding calculator". The goal is a tool that ranks for those searches and makes money. What it should do: Create a startup runway calculator with current cash, monthly burn rate, and revenue inputs. Calculate remaining runway, cash flow projections, and funding needs. Include scenario planning, growth assumptions, and fundraising timeline recommendations. Add investor-ready reports and cash management tips. Focus on getting runway calculations working first. How to build it: 1. Read this folder first. If it is empty, set up Next.js (App Router, TypeScript, Tailwind). Write a short PLAN.md with the pages, components, any library or API you need, and what you are leaving for later. Then build. 2. Put the tool itself on the homepage so a visitor can use it within seconds, with no sign-up. Do the processing in the browser where you can, so it is fast and cheap to run. Look at how Carta, Kruze Consulting, Lighter Capital do it and make ours simpler and faster. 3. Make it rank. Use "startup runway calculator" in the title tag, H1 and meta description. Under the tool, add a short how-to and an FAQ with FAQPage schema, and add a sitemap and robots.txt. Scaffold these programmatic pages from one template and a data file: /startup-runway-calculator-[funding-stage], /burn-rate-calculator-[company-size], /startup-finance-[industry]. 4. Monetisation: Freemium: Basic calculations, $15/mo premium + scenarios. Add a pricing page and the free usage limit, and leave Stripe checkout as a clearly marked stub with the environment variables it needs. 5. Run it locally and test the main flow end to end, including edge cases like empty input and very large files. Fix what breaks, then finish with a summary of what works, what is stubbed and how to deploy it to Vercel.
Paste it into Claude Code in an empty folder. It plans first, so read PLAN.md and steer before it starts building.
What people search for
Who you're up against
- Carta : Equity management with financial planning
- Kruze Consulting : Startup accounting with runway tracking
- Lighter Capital : Startup funding with financial tools
Pages that can rank
One template, many long-tail pages:
- /startup-runway-calculator-[funding-stage]
- /burn-rate-calculator-[company-size]
- /startup-finance-[industry]
- /funding-runway-[business-type]
Content to write
- How to Calculate Startup Runway and Manage Burn Rate
- Startup Financial Planning: Runway and Fundraising
- Cash Flow Management for Early-Stage Startups
- Startup Metrics Every Founder Should Track
How it makes money
Freemium: Basic calculations, $15/mo premium + scenarios
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