How to change Currency in INR in magento?

In Magento, Currency change is very easy just we need to follow below step: 

1. From the Admin panel, select System > Configuration.

2. From the Configuration panel on the left, under General, select the Currency Setup tab.

Click to expand the Currency Options section. Then, do the following:

1. In the Base Currency list, select the primary currency that is used for store transactions.

2. In the Default Display Currency list, select the primary currency that is used to display pricing in your store.

3. In the Allowed Currencies list, select all currencies that are accepted as payment by your store. When finished, click the Save Config button.

To customize currency symbols:

Currency symbols appear in the Admin panel of your store, and are also used throughout your storefront in orders, customer checkout, and so on.

1. From the Admin panel, select System > Manage Currency > Symbols.

2. Each enabled currency for your store appears in the Currency list.

3. Enter a custom symbol to use for each currency, or select the standard symbol selecting the Use Standard checkbox to the right of each currency. When finished, click the Save Currency Symbols button.