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Forex Lot Size Converter

Convert any trade size between standard, mini, micro and nano lots and units, and see the notional value. The conversions are exact and run entirely in your browser.

Direct answer

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.

Convert

Amount

This amount is in

Instrument

Price (optional, for notional value)

1 standard = 10 mini = 100 micro = 1000 nano · units = lots × contract size

Equivalent sizes

Units—

Lot tier	Size

Notional value—

Nano lots are not offered by every broker.

Trade-cost check

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Before you place this, compare brokers on the one number that matters — the all-in cost of spread and commission — using the same documented assumptions as the calculators.

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Risk warning. CFDs are complex instruments and carry a high risk of losing money rapidly due to leverage. A significant proportion of retail investor accounts lose money when trading CFDs; where a broker publishes an official percentage, we show it only with the source and capture date. Consider whether you understand how CFDs work and can afford the risk. Full risk disclosure.

Broker availability, products and leverage vary by country and jurisdiction. Educational tools for non-US traders · not directed at US persons.

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.

Frequently asked questions

How many units is one standard lot?

One standard forex lot is 100,000 units of the base currency. A mini lot is 10,000, a micro lot is 1,000, and a nano lot is 100.

How do I convert standard lots to mini and micro lots?

Multiply by 10 for mini lots and by 100 for micro lots: 0.4 standard lots is 4 mini lots and 40 micro lots. The converter does every tier at once.

Is a lot the same size for gold?

No. A standard gold lot is commonly 100 troy ounces, not 100,000 units. Switch the instrument to gold so the converter uses the right contract size.

What is the difference between units and notional value?

Units are the amount of base currency the position controls. Notional value is units multiplied by the price, expressed in the quote currency — the full market value of the position.

What is a nano lot?

A nano lot is 100 units, one tenth of a micro lot. Not every broker offers nano lots, so confirm your broker's minimum tradable size.