# Options profit calculator

> At expiry, a bought call makes (stock price − strike − premium) × 100 per contract when the stock finishes above the strike, and loses the premium paid if it does not. A bought put makes (strike − stock price − premium) × 100 when the stock finishes below the strike. Breakeven is strike + premium for a call and strike − premium for a put. Enter your option below to see the profit or loss at any stock price, the breakeven, and the most you can make or lose, whether you buy or sell.

Source: https://cluenex.com/learn/tools/options-profit-calculator/

### How do you calculate profit on a call option?

At expiry: (stock price − strike − premium) × 100 per contract when the stock is above the strike. Below the strike the call expires worthless and you lose the premium you paid.

### What is the breakeven price of an option?

For a call, strike plus the premium paid. For a put, strike minus the premium paid. At that stock price on expiry day the option's value equals what you paid for it.

### What is the most you can lose buying an option?

The premium you paid, times 100 shares per contract. Selling options is different: an uncovered call has no limit on its loss, and a sold put can lose the strike minus the premium.

### Why is my option losing money when the stock goes up?

Before expiry, an option's price also depends on time left and implied volatility. Time value shrinks every day, and implied volatility often drops after earnings, so an option can lose value even when the stock moves your way.