Position
Long position: you buy first, then sell later at a (hopefully) higher price.
Trade Details
Fees
Flat fees per trade — enter what your broker charges per transaction, not per share.
Live Result
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Enter your trade details on the left to see your P&L here.
Net Profit / Loss

How the Calculator Works

Works for both long and short positions, with or without broker fees.

Step 01

Choose Your Position Type

Long if you bought first and plan to sell later. Short if you sold (borrowed shares) first and plan to buy back later.

Step 02

Enter Price & Share Count

Fill in your buy price, sell price, and number of shares. The result updates instantly as you type.

Step 03

Add Broker Fees (Optional)

Toggle on fees if your broker charges a flat commission per trade, so your net P&L is accurate — not just the gross gain.

Step 04

Review Your P&L

See your net profit or loss, return on investment (ROI), and breakeven price — then copy the result with one tap.

How It Helps You

Know your real return before you close the position — fees included.

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Long & Short Support

Calculates P&L correctly whether you're buying low to sell high, or shorting high to buy back low.

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Fee-Aware

Optionally factor in buy and sell commissions so your net profit reflects what actually lands in your account.

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Breakeven Price

See the exact price you need to hit just to cover your fees — useful before you even place the trade.

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Completely Private

Your trade details stay in your browser. Nothing is logged, tracked, or sent anywhere.

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One-Tap Copy

Copy your result instantly to paste into a trading journal or spreadsheet.

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Forever Free

No sign-up, no subscription, no limits. Run as many trades as you like.