How To Call California From Singapore

Quick Reference Summary

To call California (USA) from Singapore:

001 + 1 + California Area Code + Local Number

Examples:

• For Los Angeles landline/mobile (Area Code 213): 001 + 1 + 213 + XXX XXXX
• For San Francisco landline/mobile (Area Code 415): 001 + 1 + 415 + XXX XXXX

When it’s 12 PM (noon) in Singapore, it’s 8 PM / 9 PM (previous day) in California. (California is 16 hours behind Singapore during Standard Time (PST – early Nov to mid-Mar) and 15 hours behind during Daylight Saving Time (PDT – mid-Mar to early Nov)).

How to Call California from Singapore (Landline & Mobile)

Calling California from Singapore is straightforward, and the process is the same for both landlines and mobile phones as the US uses an integrated numbering plan.

1. Dial Singapore’s international access code: 001 (or 002, 008 depending on your phone company)
2. Dial the United States country code: 1
3. Dial the 3-digit California area code (e.g., 213 for parts of Los Angeles, 415 for San Francisco, 619 for San Diego).
4. Dial the 7-digit local phone number.

For example, if you’re calling a number in San Diego with area code 619, written as (619) 555-1234, you would dial 001 1 619 555 1234 from Singapore.

Important Note: US phone numbers (including California) do not use a leading ‘0’ before the area code for domestic calls, so you simply dial the area code directly after the country code ‘1’.

Different Ways to Dial Internationally from Singapore

Singapore offers several international access codes depending on your provider:

• 001: SingTel
• 002: M1
• 008: StarHub

Using different codes might result in different charges from your standard phone provider. When using a phone card, such as those from Singapore Phone Cards, always use the local access number provided with the card for the best rates.

Understanding US/California Phone Numbers

All phone numbers in the United States, including California, follow the North American Numbering Plan (NANP):

• Country Code: 1
• Area Code: 3 digits (Specific to a geographic region within California)
• Local Number: 7 digits (often written as XXX-XXXX)

Total digits dialed after the Singapore exit code: 1 + 3 + 7 = 11 digits.

Major California Area Codes

California is a large state with numerous area codes. Here are some of the most common ones:

Note: Area code boundaries can be complex, and overlay plans mean multiple area codes can serve the same geographic area. Always confirm the correct area code.

Time Difference: Singapore to California

California is primarily in the Pacific Time Zone (PT).

• Pacific Standard Time (PST): UTC-8 (observed from early November to mid-March)
• Pacific Daylight Time (PDT): UTC-7 (observed from mid-March to early November)

Singapore is always UTC+8.

• During PST (UTC-8), California is 16 hours behind Singapore. (e.g., 12 PM noon Singapore = 8 PM previous day California)
• During PDT (UTC-7), California is 15 hours behind Singapore. (e.g., 12 PM noon Singapore = 9 PM previous day California)

Always check the current date to determine if California is observing PST or PDT before calling.

Special Numbers to Know (US)

• Emergency: 911 (Cannot be dialed from outside the US)
• Toll-Free: Numbers starting with 1-800, 1-888, 1-877, 1-866, 1-855, 1-844, 1-833. While technically toll-free within the US, calling them from Singapore may incur international charges or may not connect.
• Premium Rate: Numbers starting 1-900 (Generally cannot be called from abroad and incur high charges).

Calling Business Extensions

If you need to reach a specific extension at a California business:

1. Dial the full international number (001 1 AreaCode LocalNumber).
2. Wait for the automated system or receptionist to answer.
3. Listen for instructions (usually in English) and enter the extension number when prompted.

Best Time to Call California from Singapore

Due to the significant time difference (15-16 hours), the best overlap for standard business hours (approx. 9 AM – 5 PM Pacific Time) is during Singapore’s late evening/night:

• Singapore 1 AM – 9 AM (SGT): Corresponds to roughly 9 AM – 5 PM (Pacific Time) the previous day.
• Calling during Singapore’s daytime will reach California in the middle of the night.

Plan calls carefully, especially business calls, considering the recipient’s local time in California.

Call California For Less With Singapore Phone Cards

Direct calls from Singapore to California using standard phone lines can be costly. Singapore Phone Cards offers a budget-friendly way to connect with family, friends, and contacts in the Golden State, using the reliable Kamusta Ka Kabayan Phone Card.

This card provides an exceptional rate for calling both landlines and mobile phones anywhere in California (and the rest of the USA).

Kamusta Ka Kabayan Phone Card – California Rate:

• Rate: 2 ¢/min (SG$) (Applies to both landlines and mobiles)
• Connection Fee: Nil
• Billing Increment: 2 min

Price	Talk Time (to California Landlines & Mobiles)
SG$ 10.00	8h 19min
SG$ 20.00	16h 39min
SG$ 50.00 + SG$5.00 bonus	45h 49min

Buy the Kamusta Ka Kabayan Phone Card here

Please note: Call rates are subject to change. For the absolute latest rates:

• Check latest rates for calling USA Landlines here.
• Check latest rates for calling USA Mobiles here.

Using our service is easy:

1. Dial the local Singapore access number provided with your card.
2. Enter your 10-digit PIN number when prompted.
3. Dial the Californian number: 1 + Area Code + Local Number.

Why make Singapore Phone Cards your choice for calling California?

• Call over 200+ countries, including every city and region in California.
• Use from any Singapore landline or mobile phone without rate changes.
• Enjoy transparent pricing with no hidden fees.
• Manage your spending easily with our 100% prepaid system.
• Benefit from no expiry dates and no reactivation fees on your card balance.
• Receive your PIN and full instructions via email instantly after purchase.
• Never lose your paid balance – any remaining credit rolls over for future use.