runway-calculator

Compute startup burn, runway, and solvency from savings and funding inputs.

1|Updated Mar 24, 2026
One-click install
npx skills add https://github.com/ComputerConnection/z-combinator --skill runway-calculator
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: runway-calculator
Source: https://github.com/ComputerConnection/z-combinator/tree/main/skills/runway-calculator
Command: npx skills add https://github.com/ComputerConnection/z-combinator --skill runway-calculator

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Phase-based runway planning helps founders turn rough financial estimates into actionable numbers, enabling realistic decisions about burn, runway, and deadlines.

Core Features & Use Cases

  • Phase-based guided interaction for context gathering, burn calculation, runway projection, decision deadlines, revenue milestones, and ramen profitability.
  • Scenario modeling across optimistic, realistic, and pessimistic burn rates to inform funding and pivots.
  • Output generation of RUNWAY.md with a blunt reality check and day-job guidance to de-risk startup planning.

Quick Start

Enter your current savings, expected monthly burn, and available funding to generate a real-time runway analysis.

Frequently Asked Questions about runway-calculator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate my startup's runway and burn rate accurately?

To calculate startup runway, you divide current savings and funding by your monthly burn rate to determine total months of solvency. This skill processes user-supplied savings, burn rate, and funding to compute true runway using phase-based calculations.

What is phase-based financial planning for startup runway?

Phase-based financial planning breaks runway calculation into sequential stages: context gathering, burn calculation, runway projection, decision deadlines, revenue milestones, and ramen profitability. This structured approach turns rough estimates into actionable funding and pivot decisions.

Can I model different burn rate scenarios for startup finance planning?

Yes, you can model optimistic, realistic, and pessimistic burn rate scenarios for startup finance planning. This scenario modeling informs critical decisions about future funding needs, operational pivots, and approaching decision deadlines.

How do I find my startup's decision deadline before running out of cash?

Finding your startup's decision deadline involves projecting your current savings and funding against your monthly burn rate to pinpoint when solvency ends. The tool calculates this deadline and outputs a RUNWAY.md file with a reality check.

What financial inputs do I need to project startup solvency?

To project startup solvency you need three core financial inputs: current savings, expected monthly burn rate, and available funding. Entering these variables generates a real-time runway analysis and revenue milestone tracking.

Does runway planning work for assessing ramen profitability milestones?

Yes, runway planning works for assessing ramen profitability by calculating when monthly revenue meets your minimum burn rate. The analysis maps these revenue milestones against your decision deadline to guide de-risking strategies like day-job retention.