A forex profit loss calculator answers the question every trader ultimately cares about: given an entry price, an exit price, a position size, and a trade direction, what's the actual dollar result? This page covers how to calculate profit and loss in forex step by step, a worked example, how the buy/sell direction changes the math, and how the same core formula extends to crypto and stock trades — along with an important distinction from options trading and business profit margin, which use entirely different calculations despite sharing similar-sounding names. Browse all trading calculators for related tools.
How to Calculate Profit and Loss in Forex
The Forex P/L Formula
Profit/Loss = (Exit Price − Entry Price) × Position Size × Direction
Where Direction is +1 for a buy (long) trade and −1 for a sell (short) trade. This single formula handles both directions and both winning and losing outcomes, since the sign of the result naturally comes out positive for a profit and negative for a loss.
Worked Example: Calculating Forex Profit/Loss
Example: EUR/USD Buy Trade
Entry Price = 1.0850, Exit Price = 1.0900, Position Size = 100,000 units (1 standard lot), Direction = Buy (+1)
P/L = (1.0900 − 1.0850) × 100,000 × 1
P/L = 0.0050 × 100,000 = +$500 profit
Example: A Losing Sell Trade
Entry Price = 1.2650 (GBP/USD), Exit Price = 1.2700, Position Size = 50,000 units (0.5 standard lot), Direction = Sell (−1)
P/L = (1.2700 − 1.2650) × 50,000 × (−1)
P/L = 0.0050 × 50,000 × (−1) = −$250 loss
This second example shows why direction matters: the price moved up, which would be a profit on a buy trade, but since this was a sell (short) position, the same price movement produces a loss instead.
Buy vs. Sell: Direction Changes the Calculation
The direction of a trade fundamentally flips the relationship between price movement and profit. On a buy (long) trade, profit comes from the price rising after entry. On a sell (short) trade, profit comes from the price falling after entry — the exact same price movement produces opposite financial outcomes depending on which direction the position was opened in, which is exactly why the direction multiplier in the P/L formula is essential, not optional.
Stop-Loss, Take-Profit, and the 1:2 Risk-Reward Ratio
Setting Up a 1:2 Risk-Reward Trade
A common approach to planning a trade before entering it involves setting a stop-loss (the price at which the trade closes automatically if it moves against the position) and a take-profit (the price at which it closes automatically if it moves favorably), often at a ratio like 1:2 — meaning the potential profit target is twice the distance of the potential loss being risked. For example, a trade risking 20 pips to a stop-loss with a take-profit set 40 pips away reflects a 1:2 risk-reward setup. This calculator computes the actual P/L once a trade closes at either the stop-loss, take-profit, or any other exit price; for calculating the risk-reward ratio itself before entering a trade, the risk-reward calculator is built specifically for that planning step.
Does This Work for Crypto and Stock Trades Too?
Crypto and Stock: Same Core Formula
Yes — the fundamental P/L formula (Exit Price − Entry Price, multiplied by position size and direction) applies the same way to crypto trades (buying or shorting Bitcoin, Ethereum, or other assets) and stock trades (buying or shorting shares) as it does to forex. The core math doesn't change; what changes is simply the asset being priced and the position-size unit (lots for forex, coins/tokens for crypto, shares for stocks). The calculator above includes forex, gold, silver, and crypto instrument classes; there is no dedicated stock-share selector, though the same formula applies if position size is treated as a share count.
Options Trading Profit — A Different Formula
Why Options Need Premium and Strike Price
Options profit calculation is genuinely more complex than the straightforward entry/exit formula used for forex, crypto, and stock spot positions. An option's profit depends on the premium paid, the strike price, the underlying asset's price at expiration (or at exit if closed early), and — for anyone holding before expiration — factors like time decay and implied volatility (sometimes summarized through the Greeks: delta, theta, vega, and others). This calculator does not currently compute options profit; that calculation requires inputs and a formula specific to options pricing that go beyond the entry/exit/position-size/direction model used here.
Trading Profit/Loss vs. Business Profit Margin — Not the Same
Business Margin Uses Revenue and Cost, Not Price Movement
This is worth being explicitly clear about, since the terms sound similar but describe completely different calculations: trading profit/loss (what this calculator computes) measures the outcome of a price movement between entry and exit on a financial position. Business profit margin — gross margin, net margin, or general "how to calculate profit margin" — is an entirely different accounting concept, calculated as:
Profit Margin = ((Revenue − Cost) ÷ Revenue) × 100
This measures how much of a business's revenue converts into profit after costs, which has nothing to do with trading positions, entry/exit prices, or market price movement. If the goal is calculating a business's gross or net profit margin rather than a trade's outcome, that's a fundamentally different calculator this page does not provide.
Related Trading Calculators
- Pip Calculator — calculate pip value used to verify P/L on forex positions
- Lot Size Calculator — determine position size before entering a trade
- Risk-Reward Calculator — plan a trade's risk-to-reward ratio before entry
- Margin Calculator — check required margin for a position
Frequently Asked Questions
How do I calculate profit and loss in forex?
Subtract entry price from exit price, multiply by position size, then multiply by positive 1 for a buy trade or negative 1 for a sell trade. A EUR/USD buy from 1.0850 to 1.0900 on a standard lot produces a $500 profit.
What's the forex profit loss formula?
Profit or Loss equals (Exit Price minus Entry Price) multiplied by Position Size multiplied by Direction, positive 1 for buy, negative 1 for sell.
Does direction really change the outcome?
Yes. The same price movement produces opposite results depending on trade direction. A price rise profits a buy trade but loses on a sell trade, and vice versa.
Does this calculator work for crypto trades?
Yes. The same entry, exit, position size, and direction formula applies to crypto positions the same way it applies to forex.
Does this calculator work for stock trades?
Yes, using the same core formula, with position size expressed in shares rather than lots or coins.
Can this calculate options trading profit?
No. Options profit depends on premium, strike price, and additional factors beyond simple entry and exit pricing, a different calculation this tool does not currently provide.
Is trading profit/loss the same as business profit margin?
No. Trading profit or loss measures the outcome of price movement on a position. Business profit margin measures how much of revenue converts to profit after costs, an entirely different calculation.
Is this profit/loss calculator free to use?
Yes. It is free, requires no sign-up, and calculates P/L instantly.