Equity Dilution Calculator

Use this equity dilution calculator to estimate ownership dilution after new investment or share issuance.

Startup & Finance Intelligence

Equity Dilution Calculator

Estimate ownership dilution after new investment or share issuance.

Result will appear here.

Enter startup finance inputs and calculate to see the result, interpretation, and next business check.

Formula used

New Shares ÷ Post-money Shares × 100

Inputs: Existing shares, New shares issued. Main result: Dilution percentage.

Business planning note

Business calculators on ToolsBing are for general planning, education, and estimation only. They are not accounting, tax, legal, investment, payroll, or financial advice. Always confirm important decisions with qualified professionals and official records before acting.

This tool is for general startup planning only. Fundraising, valuation, tax, equity, and investment decisions should be reviewed with qualified professionals.