Thank you for your reply, but frankly, it was not helpful - I was asking you about position sizing. Anyway, when are you opening your website for trading fx in India?
If you wish to size so that your risk equals 100$ and you know that pip value is 4 cents and stop is 100 pips then
100$ for 100 pips means 1$ for 1 pip(100 pips at 1$ = 100$ risk).
4 cent per pip per lot means 25 lots for 1$ for 1 pip.
So 25 lots at 100 pips make for 100$ risk.
But I am not sure that's what's meant since there is no %.
Maybe you meant 100$ is your account?
What % of risk do you want?
This is how fixed % goes:
Say you have 100$.
You want to use 1% fixed risk.
1% of 100$ is 1$. If your lot size is 4 cent per pip then you can not use more than 25 pips stop, as 25 pips at 4 cents(1 lot) are 1$ = 1% risk already.
You always go(random example):
Account size x % risk = total amount to risk.
(1000$ x 1% = 10$)
then
total amount to risk / stop size in pips
10$ / 50 pips = 20 cent/pip
then
how many lots are needed to get 20 cent/pip?
20 cent / pip / lot size => 20 cent/pip with 4 cent/pip per lot => 5 lots