🚀 Pre and Post Money Valuation Calculator
Work out a startup’s pre-money valuation, post-money valuation, and the new investor’s resulting ownership stake.
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Pre-money vs. post-money valuation
Pre-money valuation is what a company is worth immediately before a new round of investment. Post-money valuation is what it’s worth immediately after, once the new capital is added.
The formulas
- Post-Money Valuation = Pre-Money Valuation + New Investment
- New Investor Ownership % = New Investment / Post-Money Valuation
These figures are central to startup fundraising and determine how much of the company existing shareholders keep after a new round.
This calculator is for general startup-finance education.
Last reviewed August 2026