How to calculate margin required for BSE futures and options(writing)?

How to calculate margin required for BSE futures and options(writing)?

As of now, there are no exact files for calculating margin requirements for BSE F&O. But you can assume that the margins are very close to what NSE margins are.

We dont have a calculator but margins required is almost same as NSE. It will vary very less. So you can refere NSE margins and keep some additional margin over it.

Thanks,
can i use span calculator of zerodha for stock options.

Please email support.zerodha.com, They will reply you.
Edit:
Yes you can use the current NSE span calculator.
But once you have entered the contract, you can see the actual margin blocked in the limits page.