Model equity dilution across multiple funding rounds and see how ownership and stake values evolve.
Current Cap Table
Total ownership100.00%
Present State
$
Funding Stages
Ownership Over Time
Round Summary
Final Post-Money
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Valuation after the last modeled stage
Existing Holders Retain
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Combined stake of the starting cap table
Stages Modeled
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Priced rounds and SAFEs on the timeline
Ownership & Stake Evolution
How to use this calculator
Start by listing each shareholder on your cap table - founders, your ESOP, early investors, anyone with equity - along with the percentage they currently own. Use the + Add Holder button to grow the list. The total shouldn't go above 100% - you'll see a warning if it does.
Next, plug in the company's most recent valuation and pick whether that number is pre-money or post-money.
For each upcoming round, fill in the check size, the round's valuation, and again flag whether you're quoting pre-money or post-money.
Everything recalculates as you type - you'll see updated ownership stakes, dollar values, round-by-round dilution, and the valuation step-up between rounds.
On priced rounds you can set a Pool Refresh Target. Investors usually require the option pool topped back up to 10–15% of the post-round cap table, and the new pool is carved out pre-money - so the top-up dilutes existing holders (mostly founders), not the incoming investor. Leave it at 0 to model no refresh; your "Option Pool" holder row is what gets refreshed.
Disclaimer
Disclaimer: This is a starting point, not professional advice. Use it to frame the conversation, then validate the assumptions with real data and qualified advisors before making decisions.