EST to IST Converter

Convert time between Eastern Standard Time (EST) and India Standard Time (IST)

Eastern Standard Time (EST)

17:58:07
Nov 11, 2025
UTC

India Standard Time (IST)

17:58:07
Nov 11, 2025
UTC

Time Difference

India Standard Time (IST) is 0 hours ahead of Eastern Standard Time (EST)

Select Date

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Quick Reference

ESTIST
21:0007:30
23:0009:30
01:0011:30
03:0013:30
05:0015:30
07:0017:30
09:0019:30
11:0021:30
13:0023:30
15:0001:30
17:0003:30
19:0005:30

Related Time Zone Conversions

EST to MST MST to EST EST to PST EST to PDT PST to EST EST to CST

About EST to IST Time Conversion

Converting time between Eastern Standard Time (EST) and India Standard Time (IST) is essential for coordination between North America and India. EST is UTC-5, while IST is UTC+5:30, making IST 10.5 hours ahead of EST.

This conversion is crucial for business operations, outsourcing coordination, software development collaborations, and personal communications between the United States East Coast and India. India does not observe daylight saving time, so IST remains constant throughout the year while EST transitions to EDT.

Common Use Cases for EST to IST Conversion

Business & Work

  • Scheduling meetings with Indian business partners and teams
  • Coordinating IT and software development outsourcing projects
  • Managing customer support and business process outsourcing (BPO) operations
  • Planning conference calls with distributed teams across US and India

Personal & Travel

  • Coordinating with family and friends in India
  • Planning travel to India and adjusting schedules
  • Scheduling virtual events and online meetings with Indian participants
  • Coordinating online classes or training sessions across time zones

Time Zone Information

Eastern Standard Time (EST)

  • UTC Offset: UTC-5 (UTC-4 during EDT)
  • IANA Timezone: America/New_York
  • Daylight Saving: Second Sunday in March to First Sunday in November
  • Major Cities: New York, Philadelphia, Atlanta, Miami, Boston, Washington DC
  • Coverage: Eastern United States and Eastern Canada

India Standard Time (IST)

  • UTC Offset: UTC+5:30 (no daylight saving)
  • IANA Timezone: Asia/Kolkata
  • Daylight Saving: No daylight saving time
  • Major Cities: New Delhi, Mumbai, Bangalore, Hyderabad, Chennai, Kolkata
  • Coverage: Entire India

Quick Reference: EST to IST

9:00 AM EST
7:30 PM IST
12:00 PM EST
10:30 PM IST
3:00 PM EST
1:30 AM IST (next day)
6:00 PM EST
4:30 AM IST (next day)

Remember: IST is always 10.5 hours ahead of EST (or 9.5 hours when EDT is active)

Frequently Asked Questions

What is the time difference between EST and IST?

EST (Eastern Standard Time) is UTC-5 and IST (India Standard Time) is UTC+5:30, making IST 10.5 hours ahead of EST. When the US observes EDT (Eastern Daylight Time) during summer, the difference reduces to 9.5 hours since India does not observe daylight saving time.

Does India observe daylight saving time?

No, India does not observe daylight saving time. IST (UTC+5:30) remains constant throughout the year. This means the EST to IST difference changes from 10.5 hours (when EST is active from November to March) to 9.5 hours (when EDT is active from March to November).

When is the best time to schedule a meeting between US and India teams?

Finding overlap is challenging due to the large time difference. Morning hours in India (around 6-9 AM IST) correspond to late evening previous day in US (around 8-11 PM EST). Alternatively, afternoon in India (2-5 PM IST) works for early morning US (3-6 AM EST). Best practice is to rotate meeting times to share inconvenience equally.

Why is EST to IST conversion important?

This conversion is essential for US-India business coordination, especially in IT outsourcing, business process outsourcing (BPO), software development, customer support, and remote work. Understanding the time difference helps schedule meetings, coordinate deliverables, and maintain efficient communication across time zones.

How do I calculate EST to IST conversion manually?

Add 10.5 hours to EST time to get IST time (during standard time). For example, 9:00 AM EST + 10.5 hours = 7:30 PM IST. If the result exceeds 24 hours, subtract 24 to get the next day. When EDT is active (March-November), add 9.5 hours instead.

What are the major cities in these time zones?

EST covers major US cities including New York, Philadelphia, Atlanta, Miami, Boston, and Washington DC. IST covers all of India including New Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Kolkata. The EST region represents the US East Coast, while IST spans the entire Indian subcontinent.

Pro Tips

  • • Schedule important meetings during overlapping hours: early morning for US teams (3-6 AM EST) and afternoon for India teams (2-5 PM IST).
  • • Use asynchronous communication (emails, documentation) when real-time meetings are difficult due to the large time zone gap.
  • • Record important meetings and share recordings with participants in different time zones who couldn't attend live.
  • • Establish clear expectations about response times and working hours when coordinating between US East Coast and India.
  • • Remember that IST is fixed year-round while EST/EDT changes, so the actual time difference varies between 9.5 and 10.5 hours.
  • • Use world clock tools to visualize working hours in both time zones simultaneously for better scheduling decisions.

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Engineering

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Sampling & Nyquist Calculator
Calculate Nyquist rate, check sampling sufficiency, analyze aliasing, and compute oversampling ratios for signal processing applications.
Beam Deflection Calculator
Calculate maximum deflection for simply supported and cantilever beams with point loads or distributed loads. Includes structural engineering formulas and design guidelines.
Bolt Torque Calculator
Calculate proper tightening torque for bolts based on material grade, preload requirements, and friction coefficients. Includes safety checks and engineering formulas.
Gear Ratio Calculator
Free professional gear ratio calculator for mechanical engineering. Calculate speed reduction, torque multiplication, compound gear trains, and mechanical advantage with real-time formulas and step-by-step solutions.
Molar Mass Calculator
Calculate molar mass and analyze chemical formulas with detailed elemental breakdown. Supports complex formulas, hydrates, parentheses, and provides mass percentages for chemistry applications.
Ideal Gas Law Calculator
Calculate pressure, volume, temperature, or moles using the ideal gas law (PV = nRT). Free calculator with multiple units, step-by-step solutions, and educational content for chemistry and physics.
Op-Amp Calculator
Calculate operational amplifier circuit parameters for inverting, non-inverting, differential, and integrator/differentiator configurations. Include gain, input/output impedance, and bandwidth calculations.
Heat Transfer Calculator
Calculate heat transfer rates for conduction, convection, and radiation. Include thermal resistance, heat exchanger analysis, and cooling calculations for engineering applications.
Transformer Turns Calculator
Calculate transformer turns ratios, primary/secondary voltages, currents, and power relationships. Include step-up/step-down calculations, impedance transformation, and efficiency calculations.
Power Electronics Calculator
Design and analyze DC-DC converters (buck, boost, buck-boost), calculate switching frequencies, inductor/capacitor values, and efficiency for power supply design.
Motor RPM Calculation
Calculate motor rotational speed from Hall-effect sensors, encoders, tachometers, and back-EMF measurements. Includes filtering, calibration, and performance analysis for motor control applications.
KVAR Calculator
Calculate required reactive power (KVAR) for power factor correction, capacitor bank sizing, and energy savings analysis for electrical systems and industrial applications.
HP to kW Motor Converter
Convert between horsepower (HP) and kilowatts (kW) for mechanical, electrical, and metric motor ratings with efficiency and load adjustments for engineering applications.
mAh to Wh Converter
Convert battery capacity between milliamp-hours (mAh) and watt-hours (Wh). Calculate energy storage for batteries, power banks, and electronic devices.
kW to kWh Converter
Convert kilowatts (kW) to kilowatt-hours (kWh) and calculate energy consumption from power and time. Estimate electricity costs for appliances and devices.
kWh to Watts Converter
Convert kilowatt-hours (kWh) to watts and calculate average power consumption from energy and time. Understand device power ratings and energy usage patterns.

Screensaver

Black Screen
A free backlight bleed tester to check dead pixels, backlight bleeding. Test monitor, laptop, mobile screen or other display issues.
White Screen
Quickly detect dead pixels, screen flicker, or backlight bleed on any monitor with our advanced display testing tool.
Red Screen
Spot dead pixels, color uniformity issues, or backlight bleeding fast-ensure your screen quality with our pixel checker.
Green Screen
Instantly check for dead pixels, backlight bleed, or display defects to guarantee flawless screen performance.
Blue Screen
Test your monitor for dead pixels, backlight bleeding, and color inconsistencies in seconds with our display diagnostic tool.
Yellow Screen
Identify dead pixels, uneven backlighting, or screen defects easily-optimize your monitor's display quality now.
Purple Screen
Find and fix dead pixels, backlight bleeding, or display issues using our comprehensive screen testing solution.
Cyan Screen
Ensure perfect screen quality by detecting dead pixels, backlight bleed, and other monitor issues instantly.
Orange Screen
Diagnose dead pixels, backlight bleeding, or display problems quickly-improve your monitor's performance and viewing experience.
Pink Screen
Uncover dead pixels, backlight bleed, or screen defects fast with our user-friendly display testing tool.
Brown Screen
Verify your screen for dead pixels, backlight bleeding, or color issues to maintain top display performance.
Gray Screen
Easily detect dead pixels, backlight bleed, and other screen issues to ensure your display's optimal quality.
Lime Screen
Quickly identify and troubleshoot dead pixels, backlight bleeding, and display defects for a flawless viewing experience.
Time Screen
Display the local time on your screensaver, automatically adjusting to your current time zone for accurate, real-time clock display.
Date Screen
A screensaver that displays the current date and time. Real-time clock display on your desktop or device.
Clock Screen
Elegant clock screensaver displaying the current time with customizable styles, perfect for adding a sleek look to your screen.

Utilities

Webcam Tester
Quickly test your webcam and verify camera settings to ensure optimal video quality and proper device functionality.
Microphone Test
Test your microphone and verify settings to ensure clear audio quality and proper device performance for free.
Flashlight Tester
Test your flashlight and verify settings to ensure optimal lighting and proper device functionality for free.
Morse Code Translator
Free online Morse code generator. Convert text to Morse code, e.g.: SOS in morse code, and vice versa.
Cookie Manager
View, edit, and manage your browser cookies effortlessly to control privacy, enhance security, and customize your browsing experience.
Credit Card Number Validation
Validate credit card numbers using the Luhn algorithm to ensure they are valid and secure.
Online Tally Counter
Free online tally counter with multiple counters, labels, and total calculation. Perfect for counting, tracking, and tallying various items.
Spacebar Counter
Simple spacebar counter - press spacebar or click + button to count. Perfect for counting repetitions, events, or any activity.
Password Strength Tester
Test your password strength and learn how secure your password is. Get real-time feedback and tips to create stronger passwords.
Website Screenshot
Generate screenshots of websites by entering a URL, with options for different device viewports (mobile, tablet, desktop) and full-page captures.
Color Blindness Simulator
Simulate how colors appear to users with different types of color blindness to ensure designs are accessible to users with color vision deficiencies.
Weight Tracker
Track and compare weight progress for multiple users. Add, edit, and delete weight records with visual progress reports and user comparison.

Printable

Printable Calendar
Generate and download printable monthly calendars for any month and year. Perfect for planning, organizing, and printing.
January 2025 Calendar
Generate and download printable January 2025 Calendar. Perfect for planning, organizing, and printing.
February 2025 Calendar
Generate and download printable February 2025 Calendar. Perfect for planning, organizing, and printing.
March 2025 Calendar
Generate and download printable March 2025 Calendar. Perfect for planning, organizing, and printing.
April 2025 Calendar
Generate and download printable April 2025 Calendar. Perfect for planning, organizing, and printing.
May 2025 Calendar
Generate and download printable May 2025 Calendar. Perfect for planning, organizing, and printing.
June 2025 Calendar
Generate and download printable June 2025 Calendar. Perfect for planning, organizing, and printing.
July 2025 Calendar
Generate and download printable July 2025 Calendar. Perfect for planning, organizing, and printing.
August 2025 Calendar
Generate and download printable August 2025 Calendar. Perfect for planning, organizing, and printing.
September 2025 Calendar
Generate and download printable September 2025 Calendar. Perfect for planning, organizing, and printing.
October 2025 Calendar
Generate and download printable October 2025 Calendar. Perfect for planning, organizing, and printing.
November 2025 Calendar
Generate and download printable November 2025 Calendar. Perfect for planning, organizing, and printing.
December 2025 Calendar
Generate and download printable December 2025 Calendar. Perfect for planning, organizing, and printing.
January 2026 Calendar
Generate and download printable January 2026 Calendar. Perfect for planning, organizing, and printing.
February 2026 Calendar
Generate and download printable February 2026 Calendar. Perfect for planning, organizing, and printing.
March 2026 Calendar
Generate and download printable March 2026 Calendar. Perfect for planning, organizing, and printing.