Convert Currency ( Get Conversion Rates ) Rupee INR to Dollar USD

It can be done using Google Currency API

    protected void Page_Load(object sender, EventArgs e)
    {
        System.Net.WebClient client = new System.Net.WebClient();
        string rates = client.DownloadString("http://rate-exchange.appspot.com/currency?from=INR&to=USD");
        Rate rate = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<Rate>(rates);
        double inr = 100;
        double usd = inr * rate.rate;
    }

    public class Rate
    {
        public string to { get; set; }
        public string from { get; set; }
        public double rate { get; set; }
    }