Timezone Conversion Hub
IST to WEST Time Converter
WEST (Western European Summer Time) is exactly 4 hours and 30 minutes behind IST (India Standard Time). Calculate overlapping business hours and find the best time to schedule cross-timezone calls between IST and WEST.
Quick Answer: WEST (Western European Summer Time) is exactly 4 hours and 30 minutes behind IST (India Standard Time). When it is 12:00 PM (Noon) in IST, it is 7:30 AM in WEST. Optimal business overlap: 3.5 mutual working hours.
Source Timezone
UTC +5:30IST — India Standard Time
Saturday, October 10, 2026
21:51:35
IANA: Asia/KolkataDST: Fixed StandardKey Hub: India
Destination Timezone
UTC +1WEST — Western European Summer Time
Saturday, October 10, 2026
17:21:35
IANA: Europe/LisbonDifferential: 4 hours 30 minutes behindKey Hub: Portugal
Instant Direction Toggle: Need to view the inverse time difference?
Convert WEST to IST insteadInteractive Multi-Zone Visual Grid
Hover or drag across the hours to align schedules, discover business overlaps, and click to schedule.
Interactive Multi–Zone Visual Grid
Hover or drag across the hours to align schedules, discover business overlaps, and click to schedule.
Find time together
Saturday, October 10, 2026
Business Hours (9am – 6pm)Shoulder HoursNight / SleepOverlap Window
Click any hour tile to select & schedule
Location & Timezone
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IST
India, Sri Lanka
• UTC +5:3009:51:35 PM
12
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WEST
Portugal, Madeira
• UTC +105:21:35 PM
07
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Saturday, October 10, 2026 • Selected Hour
04:00 PMIST11:30 AMWEST
Best International Meeting Overlap|Limited standard working overlap. Consider early morning or evening slots.
Quick Timezone Converter Selector
Jump to any of the 552 international timezone converter combinations in one click:
Complete 24-Hour Conversion Table: IST to WEST
Hour-by-hour cross-reference table for scheduling calls, webinars, and international broadcasts.
05:30 IST
01:00 WEST
06:30 IST
02:00 WEST
07:30 IST
03:00 WEST
08:30 IST
04:00 WEST
09:30 IST
05:00 WEST
10:30 IST
06:00 WEST
11:30 IST
07:00 WEST
12:30 IST
08:00 WEST
13:30 IST
09:00 WEST
14:30 IST
10:00 WEST
15:30 IST
11:00 WEST
16:30 IST
12:00 WEST
17:30 IST
13:00 WEST
18:30 IST
14:00 WEST
19:30 IST
15:00 WEST
20:30 IST
16:00 WEST
21:30 IST
17:00 WEST
22:30 IST
18:00 WEST
23:30 IST
19:00 WEST
24:30 IST
20:00 WEST
01:30 IST
21:00 WEST
02:30 IST
22:00 WEST
03:30 IST
23:00 WEST
04:30 IST
24:00 WEST
Popular IST Converters
Popular Converters to WEST
Quick Hourly Reference Table
IST to WEST Hourly Conversion Chart (IST vs WEST)
Instant hour-by-hour reference table for common meeting times, morning calls, and evening handoffs between IST (India Standard Time) and WEST (Western European Summer Time).
| IST Time (India Standard Time) | WEST Time (Western European Summer Time) |
|---|---|
| 8:00 AM IST | 3:30 AM WEST |
| 9:00 AM IST | 4:30 AM WEST |
| 10:00 AM IST | 5:30 AM WEST |
| 11:00 AM IST | 6:30 AM WEST |
| 12:00 PM IST | 7:30 AM WEST |
| 1:00 PM IST | 8:30 AM WEST |
| 2:00 PM IST | 9:30 AM WEST |
| 3:00 PM IST | 10:30 AM WEST |
| 4:00 PM IST | 11:30 AM WEST |
| 5:00 PM IST | 12:30 PM WEST |
| 6:00 PM IST | 1:30 PM WEST |
| 7:00 PM IST | 2:30 PM WEST |
| 8:00 PM IST | 3:30 PM WEST |
Frequently Asked Questions: IST to WEST Time Conversion
Common queries, time calculations, and scientific explanations
Google SERP Verified
WEST (Western European Summer Time) is exactly 4 hours and 30 minutes behind IST (India Standard Time).
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