Formula
Investment amount = post-money valuation − pre-money valuation. Percent sold = investment amount ÷ post-money valuation.
Simple valuation calculator
Simple Pre-Money / Post-Money Calculator
Enter only pre-money and post-money valuation to estimate the implied investment amount and percent of the company sold.
Worked example
If pre-money is $10M and post-money is $12M, the implied investment is $2M and the company sold 16.67%.
When to use the full version
Use the full valuation calculator when you also need price per share, investor shares, founder shares, or option-pool detail.
Related tools
Valuation hub · Full Pre/Post-Money Valuation Calculator · SAFE Conversion Calculator · Founder Dilution Calculator
FAQ
What does percent sold mean?
It is the new investor's post-money ownership implied by the difference between pre-money and post-money valuation.
Why no share inputs?
This simple calculator is for quick ownership math only. It intentionally leaves out cap table share counts and option pool modeling.