Do I need an app to call Indonesia from Japan?

No. Sayfone is browser-based, so you can call directly from your web browser on any device with an internet connection. No download or installation required.

What does 18¢/min cover?

Sayfone charges a transparent per-minute rate of 18¢ for calls from Japan to Indonesia. This rate applies to both landline and mobile numbers. You pay only for the time you use; there are no setup or connection fees.

Can I call Indonesian mobile numbers?

Yes. Indonesian mobile numbers start with 8 after the country code (+62 8XX XXXX XXXX). Use the same dialing format as landlines. Mobile calls are charged at the same 18¢/min rate.

What if the call fails?

Check your internet connection first. If a specific number consistently fails, try dialing a different contact to rule out the recipient's phone. If the issue persists, verify the number format is correct or contact Sayfone support.

Is the 18¢/min rate guaranteed?

Yes. Sayfone displays the rate before you place the call, and the rate remains consistent. Any taxes or regulatory fees will be disclosed separately.

Can I call during Indonesia's night time?

Yes, you can dial 24/7. However, calling very late at night or very early morning is unlikely to reach the recipient. Use the time zone guide above to plan calls during convenient hours.

Get Connected

How to Call Indonesia from Japan

To call Indonesia from Japan, dial +62 followed by the area code and local number. Calls are charged at 18¢ per minute.

Start calling

Cost tools

🇯🇵From Japan

To Indonesia🇮🇩

$0.18

Per minute

+62

Country code

Call quality

Landline rate

$0.18/min

Mobile rate

$0.18/min

Same per-minute Sayfone rate for landline and mobile.

Average call quality

Steps at a glance

Enter +62 (Indonesia's country code)
Add the area code (2–3 digits)
Dial the local number
Review the rate and connect

DIALING STEPS

Step-by-Step Dialing Instructions

Follow these steps to dial an Indonesian number from Japan.

1
Dial the exit code
From Japan, enter 010 to make an international call.
```
010
```
2
Enter Indonesia's country code
Dial 62 (Indonesia's country code).
```
+62 or 010 62
```
3
Add the area code
Enter the area code for the Indonesian city (2–3 digits). Drop the leading 0 if present in the local format.
```
21 for Jakarta, 31 for Surabaya
```
4
Dial the local number
Enter the subscriber's local number (typically 7–8 digits).
```
1234 5678
```
5
Complete the call
Review the rate and press the call button to connect through Sayfone.
```
Full number: +62 21 1234 5678
```

Dialing format reference

+62

Use these patterns when entering a full international number to +62.

Mobile

+62 8XX XXXX XXXX (mobile numbers start with 8)

Landline

+62 [area code] XXXX XXXX (2–3 digit area code)

+62 21 1234 5678 (Jakarta landline)
+62 812 3456 7890 (mobile)
+62 31 2345 6789 (Surabaya landline)

Major city area codes

Jakarta21

Surabaya31

Bandung22

Medan61

Sources

1
Indonesia ITU Numbering Plan
Supports country code and area code formats

IMPORTANT RULES

Indonesian Dialing Rules

Key formatting and numbering conventions for Indonesia.

Drop the leading zero from area codes

Indonesian area codes in local format include a leading 0 (e.g., 021 for Jakarta). When dialing internationally, drop the 0 and use only 21. This applies to both landline and mobile prefixes.

Mobile numbers begin with 8

Indonesian mobile numbers always start with 8 after the country code. The full format is +62 8XX followed by 7–8 more digits. Do not confuse mobile prefixes with area codes.

Landline area codes are 2–3 digits

Major cities have 2-digit area codes (21 for Jakarta, 31 for Surabaya); some regions may use 3 digits. Always verify the exact code for smaller cities.

Use +62 or 010 62 from Japan

Both formats work. +62 is the international format; 010 62 is the dial-out format from Japan. Most dialing services accept both.

SMART CALLING

Best Times to Call Indonesia from Japan

Plan your calls to catch Indonesia during business hours or convenient personal times.

🇮🇩

Indonesia (WIB) is 1 hour behind Japan (JST) year-round. Indonesia does not observe daylight saving time, so the time difference remains constant. Plan business calls for late morning or early afternoon Indonesia time.

Time & windows

Japan Time

JST (UTC+9)

No daylight saving time

Indonesia Time

WIB (UTC+7)

Always 1 hour behind Japan

🇯🇵Best for business calls

Japan 14:00–18:00 (Indonesia 13:00–17:00)Covers late morning to afternoon in Indonesia; mid-afternoon in Japan

🇯🇵Good for personal calls

Japan 19:00–22:00 (Indonesia 18:00–21:00)Early evening in Indonesia; late evening in Japan

🇯🇵Avoid early morning calls

Before Japan 09:00 (Indonesia 08:00)Too early in Indonesia; still night in Japan

Calling tips

Check if the recipient observes Indonesian public holidays; some businesses close during Ramadan and Eid celebrations.
Indonesia spans three time zones (WIB, WITA, WIT), but most businesses and urban areas use WIB. Verify if calling a remote area.
Use the 1-hour difference to your advantage: afternoon calls in Japan reach people at a convenient time in Indonesia.

Business etiquette

Use formal titles and surnames when calling Indonesian business contacts; relationship-building is important.
Keep calls brief if you do not have an established relationship; Indonesians appreciate directness in business contexts.
Avoid calling very early morning or late evening unless the contact has indicated availability.

TROUBLESHOOTING

Common Issues and Restrictions

Solutions for call failures and restrictions when calling Indonesia from Japan.

Call drops or poor connection

Check your internet connection and bandwidth. If using browser-based calling, ensure you have at least 500 kbps upload and download speeds. Try closing other applications and restarting your browser.

Invalid number error

Verify you have dialed the correct format: +62 [area code] [local number]. Confirm you dropped the leading 0 from the area code. Some special numbers (premium or toll-free lines) may not route internationally; try an alternative contact number.

Area code uncertainty

If unsure of the area code, ask the recipient for their full number including the area code. Online Indonesian business directories can help confirm area codes for major cities.

Call connects but no audio

Check that your microphone and speaker are enabled in your browser. Verify browser permissions for microphone access. Test with a short test call first.

Savings

See what you could save

Adjust the tools below to compare Sayfone with typical retail pricing for calls to Indonesia. Start with one call, then layer on monthly volume to see the bigger picture.

How to use these tools

Sayfone uses your live rate for calls to Indonesia — the same basis as the rest of this page.
First, estimate savings on a single call length. Then, model a full month of minutes versus typical retail benchmarks.
Retail competitor rows are illustrative — not a quote from any carrier.