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Free SAFE Note Calculator (Post-Money + Pre-Money)

Calculate SAFE conversion across both Y Combinator post-money and pre-money flavors with valuation cap, discount, MFN, and most-investor-friendly conversions. Inputs: investment amount, valuation cap, discount, next-round price/pre-money, current shares outstanding. Outputs: SAFE shares issued, conversion price, post-conversion ownership %, founder/early-investor dilution.

Inputs

$
$
%
$
$
%

Results

Conversion Price - Cap Method

$1

Conversion Price - Discount Method

$2

Actual SAFE Conversion Price (Lower of Two)

$1

SAFE Shares Issued

625,000

New Round Price per Share

$2

New Round Shares Issued

2,500,000

New Option Pool Shares

1,458,333

Total Shares Post-Round

14,583,333

SAFE Investor Ownership %

4.3%

Original Holder Dilution

31.4%

$ Saved by SAFE vs New Money Price

$750,000

By David Shadrake · Free, no signup required

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About the Author

David Shadrake

David Shadrake works on strategic business development and tech partnerships, with focus areas across AI, fintech, venture capital, growth, sales, SEO, blockchain, and broader tech innovation. Read more of his perspective on partnerships, market dynamics, and emerging technology at davidshadrake.com.