Startup dilution calculator

Enter your pre-money valuation, the amount you're raising and the new option pool. The calculator shows the investor's stake, the post-money valuation and your founder dilution. The option pool is created pre-money, so it dilutes you, not the investor.

Pre-money valuationi

€

Amount to raise

€

New option pooli

Founder dilutioniDilution = the % of ownership founders give up by issuing new shares to investors and the option pool.

29%

Investor stake

19%

Post-moneyiPost-money = pre-money valuation plus the money raised (the value right after the round).

3,700,000 €

Option pool

10%

✅Your option pool is in the standard pre-seed range (~10%).

Option pool benchmarks →

The option pool is modeled pre-money, so it dilutes founders, not the new investor. Multiple rounds stack — see your full dilution across rounds in the model.

See your dilution across SAFEs and multiple rounds.

The full model stacks SAFEs and rounds and shows your real effective dilution — the surprise most founders miss.

Build your full model →

Last updated: June 25, 2026. For information only — not financial or legal advice.