Not sure if this matters but you don't normally localize your web interface unless you have requirements. These are the countries that speak Hindi.
Country - Population of Hindi Speakers
India - 422,048,642
Nepal - 8,000,000
United States - 649,000
Mauritius - 450,170
Fiji - 380,000
South Africa - 250,292
Suriname - 150,000
Uganda - 100,000
United Kingdom - 45,800
New Zealand - 20,000
Germany - 20,000
Trinidad and Tobago - 16,000
Singapore - 3,000