what is · beginner
What Is a Lot in Forex? (Standard, Mini, Micro Explained)
Lot size is the difference between a $10 trade and a $1,000 trade on the same chart. Get this one number wrong and your whole risk plan collapses — get it right and everything else falls into place.
A lot in forex is just the unit of trade size. When you click "buy 1 lot of EUR/USD," you're buying 100,000 euros against the dollar. That's a standard lot — the original unit institutions still use today. Brokers eventually realized retail traders couldn't realistically deposit the kind of capital needed to trade standard lots safely, so they introduced smaller fractions: the mini lot (10,000 units, 0.1 lots), the micro lot (1,000 units, 0.01 lots), and at some brokers a nano lot (100 units, 0.001 lots).
The practical impact lives in pip value. On EUR/USD, a standard lot moves about $10 per pip. A mini lot moves about $1 per pip. A micro lot moves about $0.10 per pip. So a 50 pip move on a standard lot is $500. The same 50 pip move on a micro lot is $5. Same chart, same trade, completely different financial reality. This is why the Candleread desk drills lot size into every beginner — the chart looks the same whether you're trading $5 or $5,000 per pip, and your brain doesn't always notice the difference until the P&L hits.
Indices and commodities use "contracts" or "lots" too, but the math changes. One lot of XAUUSD (gold) is usually 100 ounces, so a $1 move equals $100. One contract of NAS100 might be $1 per index point. Crypto contracts vary wildly. The principle is identical: figure out what one tick is worth in dollars on your specific instrument before you ever click buy.
Here's the rule pros use: lot size is OUTPUT, not input. You don't pick "I'm going to trade 0.5 lots today." You pick a stop loss based on chart structure, decide your dollar risk (1% of account), and let the math tell you what lot size that translates to. (Account risk in dollars) divided by (stop in pips times pip value) equals lot size. Done. The number on the order ticket is whatever the math says, even if it's a weird number like 0.07 lots.
For a $500 account risking 1% ($5) with a 25-pip stop on EUR/USD, the math gives you about 0.02 lots. For a $50,000 account with the same setup, it's 2 lots. Same chart, same risk percentage, totally different size. That's the point — the lot size scales with the account, the chart doesn't change.
Key takeaways
- ✓Standard lot = 100,000 units, mini = 10,000, micro = 1,000
- ✓Pip value scales linearly with lot size — $10, $1, $0.10
- ✓Lot size is output of position-sizing math, not an input
- ✓Same chart, different lot size = totally different financial reality
- ✓If a normal loss feels sickening, you're sized too big
Frequently asked
What's the difference between a lot and a contract?+
In forex, they're effectively the same thing. "Lot" is the more common retail term. "Contract" is more common in futures and CFD-land. Both refer to a standardized unit of trade size, and both are scaled by your broker (1 lot, 0.1 lot, 0.01 lot).
Can I trade fractional lots like 0.07?+
Yes, almost every broker supports lot sizes down to 0.01 (micro lot). Some go further to 0.001 (nano). You can enter any value the broker allows — 0.07, 0.23, 1.45 — and the platform calculates pip value automatically.
Is a bigger lot size always better?+
No. Bigger lots mean bigger dollar swings on the same chart move. If your account or your psychology can't handle a $500 loss on one trade, you have no business trading lot sizes that risk $500. Size matches the account, not your hopes.
How do I know what lot size I'm using is too big?+
If a single normal loss makes you feel sick, or if you're checking the platform every 30 seconds, you're sized too big. A correctly sized trade should feel boring — the kind of risk you'd happily put on and walk away from for an hour.