How to calculation quantity for trading ?
If your fund is INR.100000.
You want to Risk in per trade INR.2000 ( 2% of total fund ).
Current price : 500
Stoploss point : 400
Two method for calculation
First formula
quantity = risk fund / (current price - stoploss point)
quantity = 2000 / ( 500-400)
quantity = 2000/100
quantity =20
Second formula
Use fund for trade = amount
amount = risk fund * 100 / 100-stoploss point( current price/100)
amount = 20 / 200000
amount = 200000/20
amount = 10000
quantity =amount / current price
For bank nifty indian exchange
current bank nifty lots size = 15
lots = quantity/15
lot = 1.33
lot = 1 round you can buy 1 lot in bank nifty