Educational content. This article defines what a lot is and shows how lot size affects pip value and position sizing across asset classes. It does not constitute investment advice or a trading recommendation. CFD trading carries significant risk of loss and may not be suitable for all investors.
Lot size is the answer to "how big is this trade?" — it determines how much capital one pip of price movement will earn or cost. Choosing a lot size is therefore the first concrete risk-management decision on every trade, and the units differ across asset classes.
This article defines the lot across forex and CFD markets, shows the standard / mini / micro / nano hierarchy, walks through the cross-asset contract sizes used at VantoTrade, and explains how risk-based lot sizing works.
What Is a Lot?
A lot is a standardised unit of trade size in forex and CFD trading. On forex pairs, one standard lot equals 100,000 units of the base currency; on other asset classes (gold, silver, oil, indices), contract size per lot varies by instrument and is set by the broker. Lot size determines how many units of the underlying instrument are bought or sold in a single trade, and it scales the pip value and the margin requirement.
The term originated in spot forex trading, where institutional dealers historically transacted in round-number "lots" of 100,000 base-currency units. Retail brokers introduced smaller fractions (mini, micro, nano) so traders with smaller accounts could participate without taking institutional-scale risk.
Standard, Mini, Micro, and Nano Lots Explained
Forex lot sizes scale by factors of ten: a standard lot is 100,000 units, a mini lot 10,000, a micro lot 1,000, and a nano lot 100 — though nano lots are rarely offered by major brokers.
| Lot type | Units (base currency) | Notation | Pip value EUR/USD (USD account) |
|---|---|---|---|
| Standard | 100,000 | 1.00 lot | USD 10 |
| Mini | 10,000 | 0.10 lot | USD 1 |
| Micro | 1,000 | 0.01 lot | USD 0.10 |
| Nano | 100 | 0.001 lot (rare) | USD 0.01 |
Most retail platforms (including MT5 at VantoTrade) allow fractional standard lots down to 0.01, which is the micro-lot equivalent. Nano-lot accounts exist but are uncommon; they are typically used for ultra-low-risk strategy testing on a live account.
For a deeper look at how the pip itself is defined and why it sits at different decimal places across instruments, see what is a pip in trading.
How Lot Size Affects Pip Value
Pip value scales linearly with lot size. Double the lot, double the pip value; halve the lot, halve the pip value.
On EUR/USD with a USD-denominated account:
- 1 standard lot (100,000 units): 1 pip = USD 10
- 1 mini lot (10,000 units): 1 pip = USD 1
- 1 micro lot (1,000 units): 1 pip = USD 0.10
The same scaling applies on non-forex CFDs, but in those cases the multiplier is the instrument-specific contract size rather than the standardised 100,000-unit forex base. The next section breaks this down across the VantoTrade product catalogue.
Lot Size Across Asset Classes at VantoTrade
Contract size per lot is instrument-specific outside forex: gold is 100 troy ounces per lot, silver is 5,000 troy ounces, Brent oil is 1,000 barrels, and DAX 40 is 1 index unit per lot.
| Symbol | Asset class | 1 standard lot | Quote precision |
|---|---|---|---|
| EURUSD | Forex major | 100,000 EUR | 5 decimals |
| USDJPY | Forex major | 100,000 USD | 3 decimals |
| XAUUSD | Precious metal | 100 troy ounces | 2 decimals |
| XAGUSD | Precious metal | 5,000 troy ounces | 3 decimals |
| UKOIL | Energy (Brent crude) | 1,000 barrels | 3 decimals |
| DAX40 | Equity index | 1 index unit | 2 decimals |
Source: VantoTrade calculator data, snapshot 2026-05-28.
A few practical observations:
- Notional exposure differs sharply. One standard XAUUSD lot at a gold price above USD 4,000 per ounce is roughly USD 400,000+ of notional exposure (100 oz × price). One standard XAGUSD lot at a silver price near USD 37 per ounce is roughly USD 185,000 (5,000 oz × price). Per-lot dollar exposure is determined by both contract size and current price, not lot count alone.
- Silver lots are large. Because the standard silver lot is 5,000 troy ounces, even a micro silver position (0.01 lot = 50 troy ounces) is meaningful exposure. Many traders use 0.01 silver lots where they would use 0.10 gold lots.
- Index "lots" use point value. On DAX 40, contract size is 1 unit, so one full point of price movement on a 1-lot position is EUR 1; on a 0.1-lot position it is EUR 0.10. Indices are commonly discussed in "points" rather than "pips" — see the pip glossary entry for the terminology distinction.
- Lot size is broker-defined outside forex. Two brokers can list "1 standard XAUUSD lot" with different contract sizes. The VantoTrade calculator and the MT5 symbol specification show the exact contract size for every instrument on the account.
Live bid/ask, current spread, and per-symbol contract specifications are visible in the trading calculator and inside MT5.
How to Choose a Lot Size (Risk-Based Sizing)
Lot size is determined by the trader's risk per trade, stop-loss distance, and pip value, using the formula:
Lot size = Risk amount ÷ (Stop-loss in pips × Pip value per lot)
A widely cited risk-management approach caps risk per trade at 1-2% of account capital. On a USD 10,000 account at 1% risk, that is USD 100 of risk per trade.
Worked example for EUR/USD on a USD account:
- Account: USD 10,000
- Risk per trade: 1% = USD 100
- Planned stop-loss: 25 pips
- Pip value per standard lot: USD 10
- Required lot size: USD 100 ÷ (25 × USD 10) = 0.4 lots (a four-mini-lot position)
The formula generalises to non-forex CFDs by substituting the relevant pip value per lot (USD 1 per 0.01 move on XAUUSD, etc.). The commodities trading pillar shows worked examples on gold, silver, and oil contract sizes; the how to trade gold step-by-step guide covers the same sizing logic applied specifically to XAUUSD.
Lot-size selection is a risk decision, not a directional one. A larger lot does not increase the probability of a successful trade; it only scales the dollar outcome of whatever happens. Sizing for maximum lot count rather than maximum risk percentage is a common cause of rapid account drawdowns.
Frequently Asked Questions
What is 1 lot of EUR/USD in dollars?
One standard lot of EUR/USD represents 100,000 EUR of base-currency exposure, which converts to approximately USD 116,000 at an EUR/USD rate of 1.16. Mini lots (0.10) represent 10,000 EUR (~USD 11,600), and micro lots (0.01) represent 1,000 EUR (~USD 1,160). Margin required is a fraction of these notional amounts, depending on the leverage applied.
What is 1 lot of gold (XAUUSD)?
One standard lot of XAUUSD at VantoTrade is 100 troy ounces of gold. At a gold price above USD 4,000 per ounce, one standard lot represents roughly USD 400,000+ of notional exposure, and a 0.01 lot (1 troy ounce) represents roughly USD 4,000+. Pip value on a standard XAUUSD lot is USD 1 per 0.01 move.
What is the smallest lot size in forex?
The smallest commonly offered lot is the micro lot (1,000 base-currency units, notated 0.01 lots). Nano lots (100 units, 0.001 lots) exist but are rare. Most major retail brokers, VantoTrade included, allow fractional standard lots down to 0.01 (the micro-lot equivalent), which is enough granularity for almost all risk-management approaches on a retail account.
How do I calculate the right lot size for my account?
Use the formula: Lot size = Risk amount ÷ (Stop-loss in pips × Pip value per lot). Set the risk amount as a fixed percentage of account capital (a 1-2% cap is widely cited), measure the planned stop-loss distance, and divide by the pip value per standard lot for the instrument. Most trading platforms include a position-size calculator that automates this for any account currency.
Is lot size the same across all brokers?
In forex, the standard lot of 100,000 base units is consistent across major retail brokers. On commodities, indices, and crypto CFDs, lot size and contract specifications are broker-defined and can differ meaningfully. Always check the symbol specification panel in the trading platform on your specific account before opening a position; assuming a contract size from a previous broker can lead to unintended position sizing.
Key Takeaways
- A lot is a standardised unit of trade size; one standard forex lot = 100,000 base-currency units.
- Mini lots are 0.1 lots, micro lots are 0.01 lots, and nano lots (0.001) are rare.
- Pip value scales linearly with lot size: USD 10 / 1 / 0.10 per pip on EUR/USD for standard / mini / micro respectively.
- Outside forex, contract size per lot is instrument-specific; verify in the symbol specification.
- Lot size selection is a risk decision driven by stop-loss distance and account risk percentage, not a directional bet.
Apply Lot Sizing in Your Trading
The VantoTrade trading calculator and the MT5 platform symbol specification show contract size, pip value, and live spread for every available instrument, so position sizing can be set against the actual product, not an assumption. For practical sizing on the most popular CFD instruments, see the how to trade gold guide, the pip glossary entry, and the commodities pillar covering contract sizes and risk management across the catalogue.
Risk warning. Trading securities, futures, options, and contracts for differences are complex financial instruments that require knowledge and understanding. Prices can fluctuate significantly and securities may become valueless. Investors may incur losses exceeding the potential for profits. Trading on margin can result in losses greater than the amount initially deposited. Past performance is not necessarily a guide to future performance. The information in this article is for educational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any financial instrument. Consider whether CFD trading is appropriate for your circumstances and seek independent advice if necessary.
