I was in the same boat a few months ago trying to figure out the real rate. What I use now is a simple calculator that shows the live USDT to INR rate with 7-day history so you can see the trend. It's at https://paybis.com/inr-to-usdt/ and updates in real time. You can enter any amount of USDT and instantly see the value in rupees, or do the reverse – put in how much INR you want to spend and it shows how much USDT you'll get. It also has popular conversions like 1000 INR to USDT and 100 USDT to INR. Much easier than jumping between exchange dashboards.