Finance
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Pre and Post Money Valuation Calculator.
Calculate pre-money and post-money valuation from investment and ownership.
Set your values
Results update as you type.
FAQs
How does the pre and post money valuation calculator work?
Enter the requested values to receive a deterministic result. No live market, tax, or jurisdiction data is inferred.
Use Cases
Startup Funding Rounds
Founders and investors can quickly determine the post-money valuation and the equity dilution for a new investment round.
Example: Pre-money $5M, new investment $1M → post-money $6M, investor gets 16.67%.
Negotiating Investment Terms
Entrepreneurs can model different investment amounts to see how ownership percentages change, helping them negotiate fair terms.
Example: Compare a $500K vs $1M investment at a $4M pre-money valuation.
Frequently Asked Questions
- What is the difference between pre-money and post-money valuation?
- Pre-money valuation is the company's value before receiving new investment. Post-money valuation is the value after the investment is added. It is calculated as pre-money valuation plus the new investment amount.
- How is ownership percentage calculated?
- The investor's ownership percentage is calculated by dividing the new investment by the post-money valuation. The founders' ownership is the remaining percentage, which is pre-money valuation divided by post-money valuation.
- Can this calculator be used for any type of investment?
- Yes, it works for any equity investment where you know the pre-money valuation and the amount of new investment. It is commonly used for startup funding rounds, but it applies to any private company investment.
Tips & Common Mistakes
Tips
- Ensure you use the same currency for both pre-money valuation and new investment.
- Remember that post-money valuation is simply pre-money plus the new investment.
- Use this calculator to compare different investment scenarios before finalizing a deal.
- Double-check your inputs to avoid errors in ownership percentages.
Common Mistakes to Avoid
- Confusing pre-money and post-money valuation when calculating ownership.
- Using the post-money valuation as the pre-money for the next round without adjusting for new shares.
- Forgetting to include all new investment amounts, such as convertible notes converting to equity.
Last updated: August 13, 2026