How to Call Singapore from the US

To call Singapore from the US, dial 011 + 65 + the 8-digit number. Landline example: 011-65-6222-3456. Mobile: 011-65-9123-4567. There are no area codes and no leading 0 to drop — Singapore numbers are a flat 8 digits.

The 011 is the US international exit code. The 65 is Singapore’s country code. This pattern works from any US landline or mobile — on a smartphone you can substitute + for 011, dialing +65 6222 3456.

How to dial Singapore from the US

Follow these three steps every time:

1. Dial 011 — the US exit code for all international calls. On a mobile keypad, long-press 0 to enter + as a shortcut; + works identically to 011 on smartphones.
2. Dial 65 — Singapore’s ITU-assigned country code, used for every Singapore number regardless of type.
3. Dial the full 8-digit number exactly as written. Singapore has no area codes and no domestic trunk prefix, so there is no 0 to add or remove. What you see is what you dial.

The complete pattern: 011 65 <8-digit number>.

If you see a Singapore number already formatted with +65 (common on business cards and websites), replace the + with 011 from a US landline, or dial it as-is from a smartphone.

Singapore phone number format

Singapore runs one of the simplest numbering plans in the world. Because the country is a single city-state, there are no regional area codes — every number, landline or mobile, is a flat 8 digits and belongs to one nationwide numbering area governed by the Infocomm Media Development Authority (IMDA).

You identify the number type by its first digit:

First digit	Type	Dial from US
6	Landline (geographic)	011 65 6XXX XXXX
8	Mobile	011 65 8XXX XXXX
9	Mobile	011 65 9XXX XXXX
1800	Toll-free (freephone)	see note below
3	VoIP / non-geographic	011 65 3XXX XXXX

Because there is no area code, you do not need to know which part of Singapore — Orchard Road, the Central Business District, Jurong, or Changi — your contact is in. The same 011 65 + 8 digits reaches any line in the country.

How Singapore’s numbering plan works

Singapore’s 8-digit national numbering plan is administered by the IMDA. Landline (fixed) numbers were expanded to 8 digits beginning with 6, and in March 2004 mobile numbers were moved to 8 digits beginning with 8 or 9 to accommodate growth in mobile subscriptions.

Crucially for international callers, Singapore numbers carry no leading 0 trunk prefix. In Germany you drop a leading 0; in France you drop a leading 0; in Singapore there is nothing to drop. This makes US-to-Singapore dialing one of the most error-free international routes — the most common mistake people make (leaving a leading 0 in place) simply cannot happen here.

The 1800 freephone prefix is technically an alias for the digit 6, which is why toll-free services can often be reached from abroad as ordinary geographic numbers.

Time zone: Singapore Standard Time (SGT)

Singapore observes a single time zone all year:

• SGT (Singapore Standard Time) — UTC+8, with no daylight saving time. The offset from UTC never changes.

Because Singapore never changes its clocks, the only variation in the gap comes from the US side switching in and out of daylight saving.

US time zone	Offset during US standard time	Offset during US daylight saving
Eastern (ET)	Singapore +13 h	Singapore +12 h
Central (CT)	Singapore +14 h	Singapore +13 h
Mountain (MT)	Singapore +15 h	Singapore +14 h
Pacific (PT)	Singapore +16 h	Singapore +15 h

Best time to call: with a 12–13 hour gap, the workdays barely overlap. The practical window is your evening for their morning. A call placed around 8 PM–9 PM US Eastern reaches Singapore at roughly 8 AM–9 AM the next day, right as offices open. From the US West Coast, late afternoon (around 4 PM–6 PM PT) lands in Singapore’s morning the following day.

US to Singapore calling costs

Costs vary significantly by calling method:

• US carrier per-minute (no plan): AT&T and Verizon charge roughly $1–$3 per minute to Singapore without an international add-on. Fine for an occasional call.
• Carrier international add-on packages: a monthly fee reduces rates to a few cents per minute. Worthwhile above a modest amount of monthly usage.
• VoIP providers (including DialPhone): flat per-minute rates to Singapore that typically undercut carrier add-ons, with no monthly minimum. For recurring US–Singapore business calling, a VoIP plan on DialPhone business phone pays for itself quickly.
• Free app-to-app (WhatsApp, Signal): works if the Singapore side also uses the app and has Wi-Fi or data. Not viable for reaching most landlines or businesses.

Calling Singapore mobile vs landline from the US

From a US perspective, the dialing procedure is identical: 011 65 <8-digit number>. The number type only changes what the line is and, on some plans, the rate:

• Landlines start with the digit 6 and are 8 digits long.
• Mobiles start with 8 or 9 and are also 8 digits long.

There is no separate area code to distinguish them — you read the type from the first digit alone. On some US carrier plans, mobile destinations are priced higher than landlines; VoIP providers including DialPhone typically apply a single flat rate regardless of landline vs mobile.

Common mistakes when calling Singapore

• Adding a leading 0. Some callers assume Singapore works like Germany or France and prepend a 0 after the country code. Singapore has no trunk prefix — do not add one.
• Hunting for an area code. There are none. If a tool asks for an area code, leave it blank and enter all 8 digits as the local number.
• Dialing a 1800 number directly from the US. Most will not connect. Substitute the 6-prefix geographic form (011 65 6XXX XXXX) or ask your contact for their direct line.
• Misjudging the time. A 13-hour gap is easy to get backwards. Remember: their morning is your previous evening.

Business calling: a US–Singapore tip

Singapore is a major financial, logistics, and technology hub, and the time-zone gap makes it easy to miss inbound calls. A DialPhone business phone plan lets a US team present a consistent caller ID and route Singapore calls cleanly, while DialPhone’s outbound calling applies STIR/SHAKEN attestation so your number is less likely to be screened as an unknown international caller. For the full per-country playbook, see how to call internationally from the US.

FAQ

Calling Singapore FAQ

What is the country code for Singapore? +

Singapore's country code is +65. From a US landline or mobile, you reach it by dialing the US international exit code 011 first, making the full prefix 011 65. From a smartphone that supports E.164 dialing you can substitute + for 011, so +65 works identically.

Do I need to drop a leading 0 when calling Singapore from the US? +

No. Unlike Germany, France, or the UK, Singapore numbers have no domestic trunk prefix and no area codes. Every number is a flat 8 digits with nothing to strip.

So you simply dial 011 65 followed by the full 8-digit number exactly as it is written. For example, a landline shown as 6222 3456 is dialed from the US as 011 65 6222 3456 — no 0 is added or removed.

How do I call a Singapore mobile number from the US? +

Singapore mobile numbers are 8 digits and start with the digit 8 or 9. Dial 011 + 65 + the full 8-digit number — there is no leading 0 and no separate area code.

Example: a mobile written as 9123 4567 is dialed from the US as 011 65 9123 4567. The same procedure applies to landlines, which start with the digit 6.

What is the best time to call Singapore from the US? +

Singapore Standard Time is UTC+8 with no daylight saving, so it is 13 hours ahead of US Eastern Standard Time and 12 hours ahead during US daylight saving. That large gap means the overlap is early morning for you.

The most reliable window is around 8 PM–9 PM US Eastern the evening before, which reaches Singapore at roughly 8 AM–9 AM the next day as offices open. A 9 PM ET call lands at about 9 AM in Singapore.

How much does it cost to call Singapore from the US? +

Standard US carrier rates without an international plan run roughly $1–$3 per minute to Singapore. Carrier international add-on packages reduce this to a few cents per minute for a monthly fee.

VoIP providers including DialPhone charge flat per-minute rates to Singapore that are typically lower than carrier add-on plans, with no monthly minimum for low-volume callers.

Can I call Singapore 1800 toll-free numbers from the US? +

Singapore 1800 freephone numbers are free only when dialed from within Singapore, and many will not route at all from a US network. A useful trick: in Singapore, 1800 is an alias for the digit 6.

That means a number written as 1800 xxx xxxx can usually be reached from abroad as a normal geographic line by dialing 011 65 6xxx xxxx — you pay standard international rates, but the call connects.

What time zone is Singapore in and does it use daylight saving? +

Singapore observes a single time zone, Singapore Standard Time (SGT), which is UTC+8 year-round. It does not observe daylight saving time, so the offset from UTC never changes.

Because the US does change clocks twice a year, the gap between Singapore and US Eastern shifts between 13 hours (US standard time) and 12 hours (US daylight saving) — the change comes from the US side, not Singapore.

How do I save a Singapore number in my phone contacts? +

Save Singapore numbers in full E.164 international format: +65 followed by the 8-digit number with no leading 0 and no area code. For example, a number 6222 3456 should be saved as +65 6222 3456.

This format works from any country without modification, prevents dialing errors when roaming, and is the standard format expected by CRMs and VoIP platforms including DialPhone.

Related guides

• How to call internationally from the US — exit code 011 and the per-country rules
• Number porting guide — bring your existing number to DialPhone
• STIR/SHAKEN explained — why caller ID attestation matters for international calls

Call other countries from the US

Part of the How to Call Internationally from the US hub — exit code 011, country codes, and the per-country mobile rules.

• How to call the UK from the US
• How to call Germany from the US
• How to call France from the US
• How to call Italy from the US
• How to call Spain from the US