Pre & Post-Money Valuation Calculator
Enter any two of Investment, Investor’s equity, Pre-money, or Post-money. The other two update instantly.
💸Investment
?
$
Investment must be ≥ 0.
🎯Investor’s equity
?
%
Equity must be between 0% and 100%.
🏷️Pre-money valuation
?
$
Pre-money must be ≥ 0.
🏦Post-money valuation
?
$
Post-money must be ≥ 0.
⚡Quick summary
Inputs detected
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Founder ownership (post)
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Sanity check
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Core formulas: POST = PRE + I and E = I / POST.
🧮Step-by-step derivation
1) Post-money:
POST = PRE + I2) Investor’s equity:
E = I / POSTSubstitute with your inputs:
…Solve:
…Equity values here refer to equity valuation, not enterprise value.
📚Reference table & sources
| Topic | Summary | Source |
|---|---|---|
| Post = Pre + Investment | Post-money equals pre-money plus new cash raised. | CFI — Pre/Post Money |
| Equity fraction | Investor ownership after round is Investment ÷ Post-money. | Carta — Pre vs Post |
| Concepts & examples | Definitions and simple examples of pre- and post-money. | Investopedia — Pre vs Post |