Convert four forex lot conventions to base currency units, a 100-share stock bundle to shares, or NYMEX WTI (CL) contracts to barrels. Select the exact contract definition before calculating.

Choose a specific lot convention. The 100-share stock option is an explicit bundle, not every stockโ€™s exchange round lot. Oil uses NYMEX WTI (CL), 1,000 barrels per contract.

Lots to Units Formula

The following formula is used to convert lots into the equivalent number of units.

U = L ร— UPL

Variables:

  • U is the total number of units
  • L is the number of lots
  • UPL is the number of units per lot

To calculate the total units, multiply the number of lots by the units contained in one lot for the selected instrument.

What are Lots and Units?

A lot is a standardized trading quantity used by brokers and exchanges to represent a fixed bundle of the underlying asset. Units are the actual quantity represented by that bundle, such as currency units, shares, barrels, or other contract quantities. For example, in forex a standard lot is typically 100,000 currency units, while a mini lot is 10,000 units and a micro lot is 1,000 units.

Converting lots to units is useful because trading platforms often display position size in lots, but traders frequently want to understand their real exposure in terms of the underlying asset. Once the contract size is known, the conversion is straightforward.

Common Lot Sizes

  • Forex Standard Lot = 100,000 units
  • Forex Mini Lot = 10,000 units
  • Forex Micro Lot = 1,000 units
  • Forex Nano Lot = 100 units
  • 100-share Stock Bundle = 100 shares
  • NYMEX WTI Crude Oil Futures (CL) Contract = 1,000 barrels

How to Convert Lots to Units?

The following steps outline how to convert lots into units.


  1. First, determine the number of lots in the position.
  2. Next, determine the number of units contained in one lot for the selected market or instrument.
  3. Then, calculate the total units using the formula U = L ร— UPL.
  4. Finally, verify the result using the calculator above.

Lots to Units Conversion Table

The table below shows the equivalent number of units represented by a 2-lot position for several common lot definitions.

Instrument / Lot TypeUnits Per Lot2 Lots in Units
Forex Standard Lot100,000200,000 units
Forex Mini Lot10,00020,000 units
Forex Micro Lot1,0002,000 units
Forex Nano Lot100200 units
100-share Stock Bundle100200 shares
NYMEX WTI Crude Oil Futures (CL)1,000 barrels2,000 barrels

Keep in mind that exact lot specifications can vary by broker, market, or instrument. Always confirm the contract size being used by your platform before placing a trade or making a risk calculation.

Example Problem :

Use the following variables as an example problem to test your knowledge.

Number of Lots (L) = 2.5

Units Per Lot (UPL) = 100,000 units

Total Units (U) = 250,000 units