Founder & investor tools
SAFE & priced-round cap-table simulator
Enter your current cap table, a stack of SAFEs or notes and the next priced round. See post-money ownership, founder dilution and exactly what each instrument converts into — with Y-Combinator post-money SAFE math solved iteratively. Save a scenario to export a branded PDF or open it straight in the SAFE document template.
Round
0 = no pool top-up. Carved from pre-money — see the pool-shuffle note.
SAFEs & convertible notes
Save & export
The live model is free. Sign in to save scenarios and export a branded PDF.
Post-round summary
Post-money valuation
USD 10,000,000
Price per share
USD 1.00
Founders post-round
64.00%
Founder dilution
36.00%
Ownership after the round
| Holder | Shares | Ownership |
|---|---|---|
| Founders & existing holders | 8,000,000 | 64.00% |
| Pre-seed SAFE | 1,250,000 | 10.00% |
| New round investors | 2,000,000 | 16.00% |
| Option pool (topped up) | 1,250,000 | 10.00% |
| Total (fully diluted) | 12,500,000 | 100.00% |
SAFE / note conversions
Pre-seed SAFE
Converted at capWatch-outs
- ▲Pool shuffle: the option-pool top-up is being carved out of the pre-money cap table, so it dilutes founders rather than new investors. Negotiate the pool inside the post-money to share the dilution.
Priced-round price
The round price per share is pre-money valuation ÷ pre-round fully-diluted shares. New investors receive new money ÷ that price.
SAFE conversion
Each SAFE converts at the lower of its cap price (cap ÷ cap-basis) and its discount price (round price × (1 − discount)). Post-money SAFEs use the post-money share base, solved iteratively.
Pool & dilution
An option-pool top-up is sized to your target % of the post-money cap table. When carved from pre-money it dilutes founders, not new investors — the tool flags this pool shuffle.
Illustrative model for discussion only — not legal, tax or financial advice. Results depend entirely on the inputs supplied. Confirm any number with qualified counsel before relying on it.