Timezone API Comparison 2026: Which One Should You Use?

What to Look for in a Timezone API

• IANA timezone support — Must use standard timezone names (e.g., "America/New_York")
• DST handling — Automatic daylight saving transitions
• UTC offset calculation — Current offset including DST
• Geolocation — Convert lat/lng to timezone
• Rate limits & pricing — Free tier availability

Top Timezone APIs Compared

API	Free Tier	Best For	Notable Feature
Google Time Zone API	$200 monthly credit	Enterprise apps	Highest accuracy, Google Maps integration
TimeZoneDB	1 request/sec free	Simple projects	Simple REST API, CSV downloads
Abstract API	1,000 req/month free	Startups	Clean JSON responses
World Time API	Unlimited free	Hobby projects	Simple, no auth required
IPGeolocation Timezone	1,000 req/day free	IP-based lookup	Timezone from IP address

Pro Tip: Use moment-timezone or date-fns-tz

If you just need client-side conversion, use JavaScript libraries like date-fns-tz or luxon instead of an API. They use the browser's IANA timezone database.