Forex Lot Size Converter
Convert a known trading volume between standard, mini, micro and nano lots and contract units. With the conventional 100,000-unit spot-FX reference, 0.10 standard lots equals 10,000 base-currency units, 1 mini lot, 10 micro lots or 100 nano lots. Replace the contract quantity when the broker symbol differs.
Conversion inputs
Enter a volume you already know. This tool translates units; it does not calculate a risk-based position.
A starting reference only; broker symbols and CFD contracts can differ.
Conventional spot FX reference. Verify the broker symbol specification.
Enter a positive lot amount or position-unit quantity.
Choose the denomination of the amount you entered.
Converted volume
Every output describes the same position quantity in a different denomination.
How lot size conversion works
The model first converts the entered amount to a standard-lot equivalent. It then multiplies that standard-lot amount by the entered standard contract quantity to obtain position units. Mini, micro and nano values are denomination equivalents, not separate positions.
Standard lots = Position units / Standard contract quantity
Mini lots = Standard lots x 10
Micro lots = Standard lots x 100
Nano lots = Standard lots x 1,000
Worked example: 0.25 standard lots
How to interpret the result
The five figures are different labels for one position quantity. They do not mean five orders should be opened. A broker may display volume in standard lots, contract units or another platform-specific convention.
Common lot denominations under a 100,000-unit FX contract
Scroll horizontally to compare every denomination.| Denomination | Standard-lot equivalent | Base-currency units |
|---|---|---|
| 1 standard lot | 1.00 | 100,000 |
| 1 mini lot | 0.10 | 10,000 |
| 1 micro lot | 0.01 | 1,000 |
| 1 nano lot | 0.001 | 100 |
This table applies only when one standard lot represents 100,000 base-currency units. Use the calculator's editable contract quantity for a different verified symbol specification.
Converter versus position-size calculator
A lot size converter answers, “What is this known volume in another denomination?” A position-size calculator answers, “What mathematical volume follows from this balance, loss budget, stop distance and pip value?” Keeping those jobs separate prevents a unit conversion from looking like a risk recommendation.
- Use this converter when a platform, trading plan or broker specification gives you an existing lot or unit amount.
- Use the Position Size Calculator when you need to derive a mathematical volume from a chosen loss budget and stop.
- Use the Margin Calculator separately because margin also depends on price, leverage, account currency and broker terms.
Assumptions and limits
- The 100,000-unit preset is a conventional spot-FX reference, not a universal broker contract.
- The XAU/USD and XAG/USD presets use this site's references of 100 and 5,000 ounces per standard lot; broker symbols can differ.
- Mini, micro and nano labels are fixed multiples of the entered standard contract quantity in model 1.0.0.
- The converter does not calculate pip value, monetary risk, margin, leverage, profit, spread, commission, swap or liquidation.
- The converter does not apply minimum volume, maximum volume or volume-step rules. Verify those rules in the broker symbol specification.
Sources and methodology
- MQL5 Reference — symbol properties documents broker-exposed contract size and volume fields, including minimum, maximum and step values.
- MQL5 Reference — SymbolInfoDouble documents how platforms expose floating-point symbol properties that traders can verify independently.
- Lot Size Conversion model 1.0.0 performs only the formulas printed on this page and receives no live market or account data.
Frequently asked questions
- Under the conventional spot-FX reference, one standard lot represents 100,000 units of the base currency. Broker and CFD symbol specifications can differ, so the contract quantity is editable.
- With a 100,000-unit standard contract, 0.01 standard lots equals 1,000 base-currency units. That is also one micro lot or 0.1 mini lots.
- Model 1.0.0 treats them as 1, 0.1, 0.01 and 0.001 of the entered standard contract quantity. They are different denominations of trading volume.
- Yes. Choose Contract units as the entered unit. Standard lots equal entered units divided by the standard contract quantity.
- Brokers can use different specifications for metals, CFDs, suffix symbols and account types. An editable value lets you replace the reference with the verified units represented by one standard lot.
- No. It converts a volume you already know. Use the Position Size Calculator to derive mathematical lots from balance, selected loss budget, stop distance and pip value.
- No. Margin also depends on current price, leverage, account currency, conversion and broker rules. Use a separate margin calculation with those inputs.
- Not necessarily. Minimum volume, maximum volume and volume step vary by broker symbol and account. This converter does not round or validate an order against those rules.
Continue your pre-trade checks
Verify broker contract specifications
Before using a converted volume, verify the exact contract quantity and accepted volume increments for the broker entity and account available in your jurisdiction.
XM
Check contract quantity, minimum volume, maximum volume and lot step for the exact symbol.
Check XM termsFXOpen
Verify contract quantity and supported order-volume increments before ordering.
Check FXOpen termsRisk and affiliate disclosure: Leveraged forex and CFD trading can result in substantial losses. These are affiliate links, so ForexMT4Indicators.com may receive compensation if you register or trade through them, at no additional cost to you. Availability and terms vary by jurisdiction and broker entity.