Equity dilution calculator.
A startup equity dilution spreadsheet for modelling a fundraising round, founder ownership, investor ownership, and option-pool impact.
Editable · Works offline · No account · No email gate
Inside the file
See ownership after the cheque clears
Clarity earns the next conversation.
Valuation headlines hide the ownership outcome. This calculator makes the post-money cap table visible so founders can discuss trade-offs before agreeing to terms.
Built for
Founders considering a priced round or modelling the ownership effect of new investment and option-pool changes.
The parts investors expect.
Make it yours. Make it true.
Enter the current ownership accurately
Model the proposed round
Test option-pool timing
Review the output with qualified legal and tax advisers
Three mistakes that kill confidence.
Confusing pre-money and post-money valuation
Ignoring the option-pool shuffle
Treating the spreadsheet as legal advice
Related founder templates.
Stop staring at a blank file.
Download the template, replace the examples with evidence, and get the round moving.