Cap Table Dilution Calculator

See how your ownership % and stake value change as your company raises more rounds. Model up to three future rounds with option-pool top-ups.

Your current stake

Current ownership %

Current post-money ($)

Round 1

Raise ($)

Pre-money ($)

Option pool top-up (% of post-money)

Round 2 (optional)

Raise ($)

Pre-money ($)

Option pool top-up (% of post-money)

Round 3 (optional)

Raise ($)

Pre-money ($)

Option pool top-up (% of post-money)

Exit scenario

Exit value ($)

Final ownership %

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Stake at exit

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Total dilution

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Round-by-round

Stage	Post-money	Your %	Your stake	Dilution

How the math works

Each round's new investors take raise ÷ post-money of the cap table. If an option pool top-up is created pre-money, that dilution is also absorbed by existing shareholders (not the new investors).

Your new % = old % × (1 − new investor share − pool top-up share).