SAFE Dilution Calculator
See how much ownership you sell through post-money SAFEs—before and after your next priced round.
Your SAFE round
Add every post-money valuation-cap SAFE you have issued or plan to issue.
SAFE 1
Post-money valuation cap
Ownership after SAFEs, before a priced round
Ownership sold through SAFEs
5.00%
Existing shareholders retain
95.00%
Post-round ownership
Existing shareholders
76.00%
SAFE investors
4.00%
New investors
20.00%
| SAFE | Investment | Converts at | After round |
|---|---|---|---|
| SAFE 1 | $500,000 | Valuation cap $10,000,000 basis | 4.00% |
This focused model covers post-money valuation-cap SAFEs without pro-rata participation or an option-pool increase. It calculates ownership percentages, not exact conversion shares.
Educational estimate only—not legal, tax, or investment advice.
What is SAFE Dilution Calculator?
A SAFE dilution calculator estimates how much ownership a startup sells through post-money valuation-cap SAFEs and how a future priced round dilutes SAFE investors and existing shareholders.
How to use this calculator
- 1Enter the investment amount and post-money valuation cap for your first SAFE.
- 2Add every other post-money valuation-cap SAFE that has been or may be issued.
- 3Review the combined ownership sold through SAFEs before a priced round.
- 4Optionally enter the next round's pre-money valuation and new investment.
- 5Compare the post-round ownership of existing shareholders, SAFE investors, and new investors.
Why this matters for founders
SAFEs are widely used for early-stage fundraising, but several individually small investments can add up to meaningful dilution. Modeling the whole SAFE round before signing another agreement gives founders a clearer view of the ownership they are selling.
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