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Forex Lot Size Converter
Convert any trade size between standard, mini, micro and nano lots — and units — and optionally see the notional value.
Convert
Equivalent sizes
| Lot tier | Size |
|---|
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One standard lot = 10 mini = 100 micro = 1,000 nano lots, and equals 100,000 units for forex (gold uses 100 ounces per lot). So 0.4 standard lots is 4 mini, 40 micro and 40,000 units. Notional value is units × price in the quote currency.
How it works
What a lot is
A lot is the standard package size for a forex trade. Brokers offer tiers so traders of any size can manage risk: a standard lot is large, a micro lot is a hundredth of it. This converter moves a size between every tier and into raw units so you can line up risk and broker minimums.
The formula
1 standard = 10 mini = 100 micro = 1,000 nano
units = lots × contract size (100,000 for forex, 100 ounces for gold)
notional value = units × price, expressed in the quote currency.
How to use this calculator
- Enter the amount and choose what unit it is in.
- Pick forex or gold so the right contract size is used.
- Optionally enter a price to see the notional value.
- Read the equivalent size in every tier and in units.
Worked example 1 — lots to units
0.4 standard lots is 0.4 × 10 = 4 mini lots, 0.4 × 100 = 40 micro lots, and 0.4 × 100,000 = 40,000 units. If EUR/USD is at 1.10 the notional is 40,000 × 1.10 = 44,000 USD.
Worked example 2 — gold is different
One standard lot of gold is 100 ounces, not 100,000. So 0.1 lots is 10 ounces; at $3,000 the notional is 10 × 3,000 = 30,000 USD. Switch the instrument to gold so the converter uses 100 instead of 100,000.
When this matters
It matters when a position-size result lands between your broker's tiers, when you are checking a minimum or maximum lot, or when you switch a strategy from a demo standard-lot account to a live micro-lot account and need the same risk.
Common mistakes
- Using 100,000 for gold. Metals and indices have their own contract sizes; forcing the forex 100,000 onto gold overstates the size by a thousand times.
- Confusing units with notional. Units count the base currency you control; notional is units times price, in the quote currency.
- Assuming every broker offers nano lots. Many do not. Check your broker's smallest tradable size before relying on a nano figure.