Its completely depends upon the lot sizes and balance of the amount. But minimum balance should be $100 to trade the forex in good manner. Hence, you should complete minimum 1000 pips to double your amount with the lot size from 0.01 to 0.10. But lot sizes calculation defers according to the brokers. ap kai bat thek ha aur ap ki bat ko ma manta hun , lakin maray mutabiq yeh bat depend karti ha kay us time wo pair kis position ma work kar ray ha aur aik trader ko us time apnay experience kay mutabiq hi us time kay mutabiq volume rakhna cahye ha.