Stop Loss & Trailing Stop Calculator

Get your stop-loss price and trailing stop % in seconds

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This % is how much of your profit you want to protect — not a % of the current price.

Example
$90 cost · $100 current → profit = $10
95% lock-in → protect 95% × $10 = $9.50
Stop price = $90 + $9.50 = $99.50
Custom 90%
Stop price
—

The price at which a stop-loss order triggers. It locks in a portion of your profit based on the profit lock-in %.

Example
$90 cost · $100 current · 95% profit lock-in
→ $90 + (95% × $10) = $99.50
Cost base
—
Current price
—
Profit Lock-in
90%
Shares
1
Gain protected
—
Trailing stop %
—

Brokers ask for a % below the current price when you submit the order — not a fixed price. This converts your stop price into that %.

Example
$100 current · $99.50 stop price
→ ($100 − $99.50) ÷ $100 = 0.50%
Enter 0.50% in your broker's trailing stop field.

How it works

Enter your cost base (what you paid per share) and the current price, then choose how much of your profit to lock in. The calculator gives you two numbers to use in your broker:

Both numbers update instantly as you adjust the profit lock-in slider. Use the Copy buttons to paste directly into your broker's order form.