Equity Dilution Calculator
Model a simple priced funding round: pre-money valuation, new investment, founder ownership, existing investor ownership, and optional pool expansion.
View all free toolsRound inputs
Post-money valuation
$5,000,000
Pre-money valuation + new investment
New investor ownership
20%
Investment / post-money valuation
Existing holders after round
80%
100% - new investor ownership
Founder dilution
14 pts
Founder pre-round ownership less post-round ownership
Post-round cap table
| Holder | Before round | After round |
|---|---|---|
| Founders | 70% | 56% |
| Existing investors | 30% | 24% |
| Option pool | 0% | 0% |
| New investor | 0% | 20% |
Formulas and assumptions
This calculator uses simple priced-round math for planning and education. It does not model SAFEs, convertible notes, liquidation preferences, anti-dilution clauses, taxes, or legal terms.
Post-money valuation
Pre-money valuation + new investment
New investor ownership
New investment / post-money valuation
Existing holder ownership
100% - new investor ownership
Founder post-round ownership
Existing non-option ownership after any option pool target, allocated pro rata by pre-round ownership
