Free, interactive tools for founders and startup investors. Everything runs in your browser. There’s no signup and no spreadsheet to download, and we don’t capture any data from your entries. Each tool links to the guides that explain the mechanics behind it.
Founder Dilution Calculator
Model every round from friends & family to Series C and beyond, and see founder ownership after each one. Typical market numbers are prefilled at every stage.
Open the founder dilution calculator →
SAFE Dilution Calculator
Model your post-money SAFEs and see exactly how much of the company existing holders keep. Then add your next priced round and option pool to see total dilution the way investors calculate it.
Open the SAFE dilution calculator →
Startup Valuation Calculator
Estimate what your startup is worth from annual revenue, sector, and growth rate. You get a range from conservative to optimistic that you can sanity-check against your next fundraise.
Open the valuation calculator →
Startup Exit Calculator
What do founders actually take home when the company sells? Model liquidation preferences, the preference stack, and the breakeven where preferences stop mattering, across a ladder of exit values.
Angel Investment Return Calculator
For investors: your proceeds, multiple on invested capital, and IRR at exit, plus how the liquidation preference stack changes the answer when the exit is modest.
Angel Investment Simulator
For new angels: simulate 10,000 portfolios and see how often a portfolio like yours loses money, why one winner carries the rest, and how the number of deals changes your odds.
Open the angel investment simulator →
More tools are on the way. Have a request? Tell us what would help, especially if you’re in the middle of a raise.