Equity dilution calculator

Every fundraise dilutes founders by investor % sold in that round. After several rounds, founder ownership = product of (1 − dilution) for each round × starting share.

Funding rounds (round name → ownership % sold)
Final founder ownership
0%
Total dilution
0%
Rounds raised
0
Founder exit value
$0
RoundSoldFounder after

Typical dilution per round

  • SAFE / Seed: 10–20%
  • Series A: 15–25%
  • Series B: 10–20%
  • Series C+: 8–15%
  • ESOP top-ups add another 5–10% over the company lifecycle.

Founders who raise 4 rounds at industry averages typically retain 20–35% by exit.