Convert All Things

All tools

Tap a tool to open it

Misc tools

Money made easy

Equity %

Your numbers here are saved automatically — locally in this browser — and gathered on the Summary page, your one-place lookup across Personal economy.

Total company valuation
$1,000,000
$100,000 for 10 % of the company
Value per 1% stake
$10,000
What any single percent of the company is worth at this valuation

What is the company really worth?

Enter what someone is paying and the percentage of the company they get, and see the implied valuation of the whole business. An offer of 100,000 for 10% values the company at 1,000,000. It's the quick math behind every deal pitched on TV shows like Shark Tank and Dragons' Den — and behind real startup negotiations too.

It answers questions like 'how do you value a company from an equity offer', 'what does 20% equity mean' and 'how is startup valuation calculated' — the same math investors and founders do on napkins, minus the napkin. It also shows what any other stake in the same company is worth at that valuation.

Good to know

  • 100,000 for 10% implies a 1,000,000 valuation — the offer divided by the share.
  • 50,000 for 5% also implies a 1,000,000 valuation.
  • On Shark Tank, founders often counter with a higher valuation — this calculator shows both sides of that math.

How it works

  1. 1Enter the investment amount offered or paid.
  2. 2Enter the percentage of the company it buys.
  3. 3The implied total valuation is calculated instantly.
  4. 4The valuation also tells you what any other stake in the company is worth.

Related tools

Convert All Things · Exchange rates from Frankfurter API