Free equity dilution calculator. Calculate how fundraising impacts your ownership, share price, pre-money and post-money valuation instantly.
Free equity dilution calculator. Calculate how fundraising impacts your ownership, share price, pre-money and post-money valuation instantly.
Generated: 1/13/2026, 7:18:47 AM | AskSMB.io
Calculate how much equity you'll give up in a fundraising round and understand the impact on your ownership.
The total amount of funding you're raising in this round
The percentage of the company investors will own after the investment
The total number of shares that exist before the new investment
Equity Dilution
10.00%
Low dilution - healthy equity preservation
Your Ownership After Dilution
90.00%
Your ownership percentage after the investment
Pre-money Valuation
£900,000.00
Company valuation before the investment
Post-money Valuation
£1,000,000.00
Company valuation after the investment (pre-money + investment)
Implied Share Price
£900.00
The price per share based on the pre-money valuation
New Shares to Issue
111
Number of new shares to be issued to investors
Percentage of Pre-money Valuation Raised
11.11%
Investment amount as a percentage of pre-money valuation
The valuation of your company before new investment. This is calculated by determining what valuation would result in the investor owning their desired percentage after investing their capital.
The valuation of your company after the new investment. This is simply the pre-money valuation plus the investment amount.
The implied price per share is calculated by dividing the pre-money valuation by the number of existing shares.
Your dilution percentage equals the percentage of new shares being issued. While your percentage decreases, the total value of your stake may increase if the valuation is fair.
Let's say you're raising £100,000 for 10% post-money equity, and you currently have 1,000 shares:
Equity dilution occurs when a company issues new shares, reducing the ownership percentage of existing shareholders. While dilution decreases your percentage ownership, it doesn't necessarily decrease the value of your stake if the investment increases the company's overall valuation.