How to calculate spread in forex
Understanding how to calculate spread in forex is fundamental for controlling your trading costs. It’s not just a figure you glance at on your terminal - it’s a direct deduction from your profit potential, taken before the market even decides where to go.
The formula is straightforward:
Spread = Ask Price – Bid Price
Let’s say you’re looking at the EUR/USD pair.
Ask price is 1.1047.
Bid price is 1.1045.
The difference - 0.0002 - is 2 pips, and that’s your spread in forex.
Now, here’s why it matters.
If you're trading one standard lot (100,000 units), each pip is worth $10. So a 2-pip spread equals a $20 cost, instantly subtracted from your balance as you enter the trade. With mini lots (10,000 units), it’s $2. With micro lots (1,000 units), it’s $0.20.
This cost applies to every single trade - win or lose - and compounds quickly, especially in scalping or day trading strategies where frequency is high. That’s why traders always monitor live forex spreads and actively compare providers, looking for the lowest spread forex broker to retain more profit.
Spreads also shift with market conditions. During high-impact news or off-hours, spreads widen, meaning the same trade could cost more without any change in your execution. Knowing how to calculate spread in forex empowers you to adapt instantly, changing lot size, timing, or even trade selection based on real-time cost.
Platforms like Weltrade display both bids and asks transparently across all assets, allowing traders to see, calculate, and act without guessing. Combine that with tight spreads, and you’re building from a smarter entry point every time.