Calculator 1 • Cap table math
SAFE and Dilution Calculator
Stack several post-money or pre-money SAFEs, choose where the option pool goes, and see share price and founder ownership before you sign a term sheet.
1. Initial Cap Table (Pre-SAFE)
10,000,000 Base
e.g. 50% for 2 equal co-founders (models your personal stake alongside all founders)
2. Stacked SAFEs / Notes
3. Priced Equity Round (Seed / Series A)
All Founders Post-Round
50.0%
Your Stake: 25.0%
Total SAFE Dilution
16.0%
$1.50M Converted
Series A Investor Stake
20.0%
$20.0M Post-Money
Option Pool Shuffle
-6.0%
Post-Round Ownership Architecture
$5.50M Total Capital Raised
Interactive model • Cap table after the round
Click or press arrow keys on any stakeholder slice to lift and inspect its exact post-round share.
Interactive model • Founder ownership by stage
Watch the founder share narrow from the founding cap table through SAFE conversion and the priced round.
Post-Round Cap Table Ledger
| Stakeholder Class | Investment | Eff. Price / Sh | Shares Issued | Ownership % | Implied Value |
|---|
What this means
Model notes: illustrative, not legal or financial advice. Discounts are applied against the priced round. Pre-money SAFEs are approximated. No pro rata rights, MFN terms or convertible note interest. SAFE terms: standard post-money SAFE template, accessed 2026-10-18.