Founder Equity Dilution Calculator
How much of my company will I own after several rounds?
Each funding round sells a slice of the company, so everyone’s percentage shrinks. See where founders, the option pool and investors end up.
How this calculator works
The option pool is carved out of the founders’ shares first. Each round then multiplies every existing holder’s percentage by (1 − % sold) and gives that % to the new investors.
Frequently asked questions
How much dilution is normal?
Many venture-backed startups sell roughly 15–25% per priced round. After seed, A and B, founders together often hold well under half, which is normal if the company is growing in value.
Does dilution mean I am losing money?
Not necessarily. A smaller share of a much more valuable company can be worth far more. Use the exit value field to see what each stake is worth.
Results are estimates based on the numbers you enter and simplified assumptions. They are not financial advice. See our disclaimer.