Stock profit calculator

Buy price, sell price, shares, and commissions → net profit, return %, and the break-even sell price.

Flat fees per side — commissions, not percentages. Leave at 0 for none.

Currency-neutral — use the same currency for all fields. Taxes are not included. Everything runs in this browser. Nothing is stored.

How to use

  1. Enter buy price, sell price, and shares.
  2. Add commissions if your broker charges them.
  3. Read net profit, % return, and break-even.

What it supports

Plain buy-then-sell arithmetic: prices up to 1e12, up to 1e9 shares, flat commissions on each side. No taxes, dividends, margin interest, or short positions — those change the answer.

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