πŸ‡―πŸ‡΅UK to Japan Calling Guide

How to Call Japan
from the UK

Make seamless calls to japan from uk directly from your browser. Outbound calls don’t require a dedicated number. To receive inbound calls, secure a unique US/Canada digital number ($2.14–$5/month).

Product facts

  • Outbound: No dedicated number required.
  • Inbound: Requires US/Canada digital number ($2.14–$5/month).
  • No apps: Works in Chrome, Safari, Edge, Firefox.

Product facts

  • Outbound: No dedicated number required.
  • Inbound: Requires US/Canada digital number ($2.14–$5/month).
  • No apps: Works in Chrome, Safari, Edge, Firefox.
Step-by-Step Guide
Calling Japan (+81)Ready
πŸ‡―πŸ‡΅

How to Call Japan from UK

Follow these simple steps to connect to any number in Japan from the United Kingdom.

1

UK Exit Code

Dial 00.
This is the standard exit code for calling internationally from the UK and Europe.

2

Japan Code (+81)

Dial 81.
This directs your call to the Japanese telephone network.

3

Area Code & Number

Dial the city code and number.
Drop the leading zero!

Time Difference Alert

Japan (JST) is typically 9 hours ahead of the UK (GMT).
When it is 9:00 AM in London, it is 6:00 PM in Tokyo. The best time to call is usually in the UK morning (8 AM - 12 PM).

Major Japanese City Codes

Remember to remove the leading '0' when dialing from the UK.

CityRegionDial From UK
TokyoKanto3
OsakaKansai6
KyotoKansai75
YokohamaKanagawa45
SapporoHokkaido11
CityRegionDial From UK
NagoyaAichi52
KobeHyogo78
FukuokaKyushu92
HiroshimaChugoku82
NahaOkinawa98

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Frequently Asked Questions

What is the exit code for UK?

The exit code for the United Kingdom is 00. You must dial this before the country code when calling internationally from a landline. On mobile phones or VoIP, you can simply use the '+' symbol.

How do I call a Japanese mobile from UK?

Japanese mobile numbers start with 090, 080, or 070. To call from the UK, dial 00 (exit) + 81 (Japan) + 90/80/70 (mobile prefix without leading zero) + 8 digit number.

What is the time difference?

Japan is 9 hours ahead of UK (GMT). During British Summer Time (BST), the difference is 8 hours.

Can I call Japan for free?

StartACall offers a free trial for new sign-ups to test call quality. Regular calls are charged at a very low per-minute rate compared to standard carriers.

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Country deep dive

From United Kingdom to Japan

Practical reference covering the destination country's dial code, time zone, mobile carriers, city area codes, business etiquette, and any regulatory rules that affect inbound calls. The information below is specific to this route β€” different country pairs surface different operational details.

Calling Japan (+81)

Japan sits in JST (UTC+9) β€” no daylight saving.. The country dial code is +81 and the official language for business is Japanese. Local business hours run roughly 9:00–18:00 with strict 12:00–13:00 lunch. Friday after 17:30 is largely socially-reserved time..

Major cities & area codes

  • Tokyo Β· 03
  • Osaka Β· 06
  • Yokohama Β· 045
  • Nagoya Β· 052

Mobile carriers in Japan

  • SoftBank Β· 070, 080, 090 mobiles
  • Rakuten Mobile Β· 070, 080, 090 mobiles β€” Fourth-entrant since 2020
  • NTT Docomo Β· 070, 080, 090 mobiles

What to know when calling Japan

  • β€’Voice calls remain a respected formal channel in Japan, especially for first contacts with new clients β€” email/IM is sometimes considered too informal for B2B introductions.
  • β€’Mobile numbers start with 070, 080, or 090. Drop the leading 0 after +81.

Calling from United Kingdom

From United Kingdom (GMT (UTC+0) / BST (UTC+1, last Sunday of March to last Sunday of October).) the local business window is 9:00–17:30 typical. Pub-and-lunch culture clusters meetings 10:00–12:30 and 14:00–16:30.. Most outbound callers reach a live answer most easily mid-morning local time, before lunch, and again in the late afternoon.

  • β€’International calls to UK landlines should drop the leading 0 after +44; mobiles likewise (e.g. UK mobile 07700 900000 dials as +44 7700 900000).
  • β€’070 numbers look like UK mobiles but are 'personal numbers' that can cost the caller Β£0.50/minute or more β€” they're not real mobile lines.
Operational facts above are sourced from regulator publications and carrier disclosures; specific rates and routing are confirmed in the live dialer.
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