Startup funding simulator
Hi HN We built a tool to help founders understand how modern fundraising (with safes) works, and how much dilution you can expect when raising money. The project is open-source. The code is a mess right now, but it'll get better I promise. You can also help with that. We didn't build this to make money. We genuinely did it because we were looking for it, and couldn't find it. We're in fact in the process of fundraising for a company, and at first glance the process looks simple. Just an excel sheet will do! But then the more we dug into it and tried different simulators, the more we realized…
Startup funding simulator launched on January 24, 2024 with 654 votes, #16 of 4,438 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Startup Funding Simulator is an open-source tool that helps founders model how modern fundraising rounds work, particularly with SAFEs, and calculate the dilution they will experience. Built by founders who struggled to find an existing solution, it simplifies the complex math behind equity dilution across multiple funding scenarios. The project is freely available for use and contributions.
written from the facts on this page · September 2026
From the sources
Add investors, Safes and priced rounds, simulate how much dilution you will get, and know how much money you will make at exit.
In the maker’s words, at launch
Hi HN We built a tool to help founders understand how modern fundraising (with safes) works, and how much dilution you can expect when raising money. The project is open-source. The code is a mess right now, but it'll get better I promise. You can also help with that. We didn't build this to make money. We genuinely…
Does a similar job
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Startup Fundraising Calculator2019 · ledgy.com · ▲261The calculator you need if you’re raising money.
Startup Funding2016 · startupfunding.io · ▲482A curated list of essential tools for your funding journey
Venture360's Startup Fundraising Tool2017 · venture360.co · ▲141An all-in-one DIY fundraising solution for launch to exit
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