Startup Investment Calculator
Enter the pre-money valuation and your check size to see your ownership, the post-money valuation and what an exit could return.
Share lost to later rounds and option pool top-ups.
Your ownership at close
5.88%
Post-money valuation
$4,250,000
Existing holders keep
94.12%
$2,058,824 (8.2x)
Exit valuation needed for a return of
- 3x$18,214,286
- 10x$60,714,286
- 30x$182,142,857
The math
Post-money valuation is pre-money plus the new investment. Your ownership is your investment divided by post-money. Existing holders keep pre-money divided by post-money.
Dilution and exit
Later rounds and option pool increases reduce your share. The calculator applies the dilution percentage you enter, then multiplies your remaining ownership by the exit valuation. It ignores liquidation preferences, debt, taxes and fees, which change real payouts.
Not financial advice
This is an educational calculator, not investment advice. Calculations happen in your browser and nothing is stored.
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