NO. T-1203 · Wealth & Investing
Startup Equity Dilution Calculator
- Free · no signup
- Runs in your browser
About this tool
How much of your company you keep after each funding round.
Every funding round sells part of your company. Model your option pool and up to three rounds — the amount raised and the pre-money valuation — to see what percentage you keep and what your stake is worth on paper after each round.
How to use it
- 01Set your starting ownership and the option pool reserved for employees.
- 02For each round, enter the amount raised and the pre-money valuation.
- 03Read your ownership and paper value after every round.
Pre/post-money
Investor share = raise ÷ (pre-money + raise).
Stake value
See how a smaller slice of a bigger pie can be worth more.
Negotiation prep
Walk into investor meetings knowing the numbers.
Frequently asked questions
What is pre-money valuation?
The company's value agreed before the new investment. Post-money = pre-money + amount raised.
Why does the option pool dilute founders?
Investors usually require the pool to be created before their investment, so it comes out of existing shareholders' ownership.
Does it handle SAFEs or liquidation preferences?
No — it models priced rounds only. Talk to a lawyer for convertible notes and preferences.
Guetix · Custom
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Results are estimates for informational purposes only and are not financial, tax or legal advice.