How to use this hub
Use the Related calculators sidebar to open each tool. Fundraising math can look simple in headlines, but ownership outcomes depend on option pools, convertibles, and preference terms-so always sanity-check with scenarios.
The fundraising stack (what changes ownership)
- Pre vs post-money sets the basic ownership math for a priced round.
- Option pool shuffle changes effective dilution for existing holders.
- SAFEs and notes convert into shares (cap/discount/interest mechanics).
- Pro rata participation can maintain ownership (if allocation allows).
- Liquidation preference changes exit proceeds even if ownership is unchanged.
Tools in this cluster
| Tool | Best for | Key input |
|---|---|---|
| Pre vs post-money | Basic ownership math | Pre-money + investment |
| Pro rata investment | Maintaining ownership | Current % + round size |
| Option pool shuffle | Founder dilution reality check | Pool % pre and target post |
| SAFE conversion | Cap vs discount intuition | SAFE amount + cap/discount |
| Note conversion | Interest + cap/discount | Principal + interest + terms |
| Liquidation preference | Exit proceeds scenarios | Exit value + investment + % |
Common mistakes
- Mixing fully diluted and issued-share bases.
- Ignoring multiple convertibles and pool increases (dilution stacks).
- Treating liquidation preference as a single number (real deals have seniority/waterfalls).