# Founder Tools

URL: https://girisimcikafasi.com/en/tools/
Published: 2026-10-17 · Updated: 2026-10-17

Make the call with numbers, not gut feeling.

Four free calculators for cash runway, founder equity, unit economics and funding rounds. No sign-up; everything is calculated in your browser, and you can share the result with a link.

- [Runway Calculator](https://girisimcikafasi.com/en/tools/runway-calculator/): How many months does your cash last, and when does it run out? Shows monthly net burn and the break-even month.
- [Founder Equity Calculator](https://girisimcikafasi.com/en/tools/founder-equity-calculator/): Split equity between co-founders on six weighted criteria and see the vesting schedule.
- [LTV/CAC Calculator](https://girisimcikafasi.com/en/tools/unit-economics-calculator/): Customer lifetime, LTV, the LTV/CAC ratio and CAC payback period, with what the ratio means.
- [Equity Dilution Calculator](https://girisimcikafasi.com/en/tools/dilution-calculator/): Pre-money, post-money, the investor's stake and the founders' new stakes, in a before-and-after table.