by Adjust the position sizing
The following form will help you to determine the best size for your position. The system adjusts the size with: the pair, your equity, the entry and exit price and, of course, the maximum risk per trade.
Depending of your account, the pair and the risk you accept on each trade the program will calculate the exact size of the position you should use for your trade.
Many brokers don't give the possibility to trade without fixed contract size (10k$, 50k$, 100k$...) it's the reason we add the number of contract in a table. The risk and the leverage are updated for each case.