Startup Equity Calculator
Model your cap table across multiple funding rounds. Calculate founder and investor equity percentages accounting for dilution, option pools, and valuations.
Cap Table
Enter values and click Calculate to see results
How the Equity Calculator Works
Enter Founder Shares
Input the initial shares allocated to founders and the option pool.
Add Funding Rounds
Include seed and Series A investment amounts and valuations.
View Cap Table
See ownership percentages and total dilution after each round.
Frequently Asked Questions
What is a typical option pool size?
Most startups create an option pool of 10-20% of total shares. Early-stage companies often start with 10-15%, while later-stage companies may expand to 20% for hiring executives.
How much dilution is normal per round?
Seed rounds typically dilute founders by 15-25%. Series A usually dilutes by 20-30%. Total founder ownership after Series A is often 50-70% of the original.
What is pre-money vs post-money valuation?
Pre-money is the company value before investment. Post-money = pre-money + investment. Investor ownership = investment / post-money valuation.
When should the option pool be created?
Investors typically require the option pool to be created pre-money, meaning founders bear the dilution. This is standard term sheet language.
How do I calculate share prices?
Price per share = pre-money valuation / total shares outstanding. New shares issued = investment amount / price per share.
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