Cap table dilution calculator
Your stake today, the pre-money valuation, the amount you raise and any ESOP pool top-up. See the post-money valuation and everyone's share after the round.
- Before a term sheet
- Explaining dilution to co-founders
- Planning several rounds
Today and the round
After the round
General information, not legal or tax advice. Rules change and differ by state; check with your CA or labour consultant before you act. Everything you type stays in your browser.
Made for people like you
How to use it
- Enter today's stakes for founders, ESOP pool and others.
- Enter the pre-money valuation and amount raised.
- Add any ESOP pool top-up and see everyone's share after the round.
Good to know
Post-money
Pre-money valuation + amount raised. The new investor's stake = amount raised ÷ post-money.
Pool top-up
When investors ask for a bigger ESOP pool before the round, it dilutes existing holders, not the new investor.
Dilution adds up
Each round dilutes everyone who does not invest. Plan two or three rounds ahead to see where founders end up.
Not legal advice
Real rounds include share classes, convertible notes and preferences. Check with your lawyer and CA.
Questions people ask
Is it free? Do I need to sign up?
Yes, it is free and you do not need to sign up. Open it and use it as often as you like.
Is my data safe?
The numbers are worked out in your browser. Nothing you type is sent to USR unless you choose to email yourself the result.
How accurate is the result?
It is an estimate based on the rules shown on this page as of November 2026, not legal or tax advice. Rules and rates change, so check with your CA before you act.
Why does the pool top-up hurt founders?
Investors usually want it created before they invest, so only existing holders are diluted.
Does this handle convertible notes?
No. Add them as other holders at their expected conversion stake.
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