Timezone Converter

What makes this different

Most timezone converters give you one fixed pair — IST to EST, nothing else. This tool covers every major developer timezone in one place: IST, EST, PST, CST, UTC, GMT, CET, JST, SGT, GST, and AEST. Switch any pair in seconds. It automatically handles Daylight Saving Time — the US shifts between EST and EDT seasonally while India never observes DST, so the gap changes from 10.5h to 9.5h depending on the date. This tool accounts for that automatically on every conversion.

The meeting overlap grid shows every hour of your business day alongside the recipient's equivalent time, highlighted green when both sides are within 9 AM–6 PM. No more mental arithmetic to find the one viable 30-minute window for an India–US standup.

Quick reference: IST to US timezones

In code — get the current time in any timezone

// Any IANA timezone name
const now = new Date();
const ist = now.toLocaleString('en-US', {
  timeZone: 'Asia/Kolkata'
});
const est = now.toLocaleString('en-US', {
  timeZone: 'America/New_York'
});
console.log('IST:', ist);
console.log('EST:', est);

from datetime import datetime
import pytz

ist_tz = pytz.timezone('Asia/Kolkata')
est_tz = pytz.timezone('America/New_York')

now_ist = datetime.now(ist_tz)
now_est = now_ist.astimezone(est_tz)

print('IST:', now_ist.strftime('%H:%M %Z'))
print('EST:', now_est.strftime('%H:%M %Z'))