Contract size
Contract size is the number of units of the asset in one lot, as set on the symbol.
Explanation
MetaTrader 5 lists contract size in Market Watch as the number of units of the commodity, currency or financial asset in one lot. The retail-forex margin formula on the help page is volume in lots, multiplied by contract size, divided by leverage. The worked example uses a contract size of 100,000. A different symbol, or the same pair at another broker, can specify another size. Read the specification for the symbol you are looking at rather than assuming 100,000.
This page explains published terms for education and reference. It is not financial, investment, tax, or trading advice, and it does not recommend a firm, product, or strategy.
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Sources and last check
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