It is defined as 10 or 100 units in currency. Why is there a unit distinction? Because some forex brokers consider a micro lot to be 10 units while others consider it to be 100 units. Micro lots, on the other hand, are scarce; just a few brokers provide them. Newcomers and strategy testers frequently like the micro lot. As a consequence, if they wish to test a new approach or hire a new expert consultant, a nano lot is appropriate for them, at least for the first few weeks.