This guide provides helpful tips for calling Singapore from the U.S. Learn how to make calls to Singapore with confidence.
Singapore is one of the world's premier business hubs — a compact, highly connected city-state that serves as the regional headquarters for thousands of multinational companies operating across Southeast Asia. Its world-class infrastructure, transparent legal system, and English-speaking business environment make it a natural gateway to the broader Asia-Pacific region. Whether you're managing a regional office in the Central Business District, coordinating with fintech or logistics partners, or maintaining family connections in this global city, knowing how to call Singapore correctly is fundamental.
Singapore's telecommunications infrastructure is among the most advanced in the world, and the country's position as a digital economy leader means that reliable voice communication — whether over traditional PSTN or VoIP — is a baseline expectation for any serious business operation.
Before dialing, ensure you're aware of the rates charged by your carrier for international calls to Singapore. You should also make sure your connection is reliable to avoid any issues caused by latency or choppy voice transmission.
Singapore is in Singapore Standard Time (SST), which is UTC+8. Singapore does not observe Daylight Saving Time, so the offset shifts relative to U.S. cities:
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With such a large time difference, scheduling calls requires careful planning. A 7 AM call from New York may reach Singapore at 7–8 PM, which is workable for end-of-day calls there. Early afternoon U.S. time typically falls in the middle of the Singapore night — avoid those windows.
For international calls from the U.S., the exit code is 011, indicating you're making an international call.
Next, dial Singapore's country code, which is +65, to connect your call to Singapore.
Start with 011, followed by 65, the country code for Singapore.
For a landline
Singapore does not use area codes. All phone numbers — landlines and mobile — are 8 digits. Landline numbers typically begin with 6. To call a Singapore landline (e.g., 6222-3456), dial: 011-65-6222-3456.
For a mobile phone
Singaporean mobile numbers are also 8 digits and begin with 8 or 9. To call a mobile number (e.g., 9123-4567), dial: 011-65-9123-4567.
1. The time difference is extreme — plan carefully. At 12–16 hours ahead of the U.S., there are only narrow windows where both parties are in working hours. Aim for early morning U.S. East Coast (7–9 AM ET) to reach Singapore in the early evening (7–9 PM SGT), or late afternoon Singapore time (4–6 PM SGT) which is early morning in the U.S. Pacific.
2. Singapore business culture is professional and direct. Unlike some other Asian business cultures that require extensive relationship-building before business discussions, Singaporean business culture is relatively pragmatic and efficient. Calls can move to business topics quickly. Punctuality and preparation are valued.
3. English is the language of business. Singapore's official working language is English, and virtually all business communication is conducted in English. You won't need translation services for business calls, which is a significant advantage for U.S. companies.
4. WhatsApp and Telegram are widely used. If a call doesn't connect or quality is an issue, WhatsApp and Telegram are the dominant messaging platforms in Singapore. Most business contacts will be reachable through one or both.
International calling to Singapore is one of many use cases where Telnyx delivers enterprise-grade voice infrastructure at consumer-grade prices. With direct carrier connections across Asia-Pacific, Telnyx routes calls to Singapore over owned network infrastructure — reducing latency, improving call clarity, and delivering rates as low as $0.01–0.05 per minute depending on destination.
For companies with regional headquarters, technology teams, or financial operations in Singapore, Telnyx's SIP trunking provides the reliability and transparency that enterprise operations demand. Direct peering with Singapore's top-tier carriers ensures call quality that matches the country's world-class telecommunications standards.
Explore Telnyx voice services to connect your teams in the U.S. with your Singapore operations on the same reliable, owned infrastructure that leading enterprises trust.
