What is a SAFE? A SAFE (Simple Agreement for Future Equity) is a startup financing instrument created by Y Combinator. Investors give money now in exchange for equity at the next priced round, at a discount or capped valuation. This calculator uses the post-money SAFE model (YC standard since 2018).
SAFE Terms
$
$
Next Priced Round
$
$
shares
%
Investor Ownership
at conversion
Effective Price/Share
SAFE conversion price
Shares Issued
to SAFE investor
Founder Dilution
from this SAFE
Cap Table After Conversion
Stakeholder Shares Ownership % Value (at round price)
Enter values above to see cap table
⚠️ Disclaimer: This calculator is for illustrative purposes only and uses simplified assumptions. Real SAFE conversions may involve pro-rata rights, MFN clauses, side letters, and other terms. Always consult a startup lawyer before signing any legal documents.