How this calculator works
Enter current ownership and the percentage of the company issued to new investors. The calculator shows the ownership remaining after dilution.
Formula
Post-round ownership = Pre-round ownership × (1 − New equity issued)
When to use it
Use it to model a fundraising round before discussing option-pool changes, SAFEs or other convertible securities.
Important
This calculator is for estimation and planning. Actual financial outcomes can differ because of taxes, fees, timing, market conditions, lender terms and other factors.