SAFE & dilution calculator

Models post-money SAFEs (the Y Combinator standard) converting in a priced round, with the option pool topped up in the pre-money. Change any number and the cap table updates.

Before the round

Granted plus unissued options

Post-money SAFEs
Priced round

Investors usually ask for 10–15% of post-money, created before they invest

Post-money valuation

$25M

Price per share

$1.7308

Founder dilution

30.8%

HolderSharesOwnership
Founders & common9,000,00062.31%
Existing option pool1,000,0006.92%
Option pool top-up444,4443.08%
Pre-seed SAFE · converts at $0.90001,111,1117.69%
New investors (priced round)2,888,88920.00%

Estimates only, not legal or tax advice. Real conversions depend on your documents: pro-rata rights, MFN clauses, pre-money SAFEs and how the pool is defined can all change the result.