Japan voltage vs Singapore: plug adapter and voltage compared

Japan runs on 100V and Singapore on 230V. The Singapore Tourism Board describes three rectangular pins for Singapore, and the Consumer Product Safety Office (Enterprise Singapore) also lists round pins. Japan's outlets take Type A plugs with two flat pins (JNTO), so bring a plug adapter to Type A.

Updated October 3, 2026

230Vin Singapore

50Hzin Singapore

726,251visitors from Singapore in 2025

Plug adapter needed

Singapore and Japan side by side

Singapore: 230V and 50Hz. Japan: 100V, 50Hz in the east and 60Hz in the west.

Voltage, frequency and plug in Japan and Singapore (official pages, checked 2026-10-03)
	Japan	Singapore
Voltage	100V JNTO	230VAlso written: 220-240V (Visit Singapore) Singapore Statutes Online
Frequency	50Hz east, 60Hz west JNTO	50Hz Singapore Statutes Online
Plug	Type A, two flat pinsPanasonic lists Type A and B JNTO	Three rectangular pins or round pins (Type G; also M and C) Singapore Tourism Board

Official pages for Singapore do not all give the same figure: 220-240V (Visit Singapore). This page uses 230V, the value from Singapore Statutes Online.

Who says what about electricity in Singapore

Official sources for voltage, frequency and plug in Singapore, and what each one states
Source	What it states	Kind
Singapore Statutes OnlineElectricity (Electrical Installations) Regulations, reg. 3	Voltage: 230V; frequency: 50Hz Source	Government
Consumer Product Safety Office (Enterprise Singapore)Types of mains plugs suitable for use in Singapore	Plug: G; M; C Source	Government
Singapore Tourism BoardEssential travel information	Voltage: 220-240V; frequency: 50Hz; plug: three square prongs Source	Tourism board

What to pack in Singapore for Japan

Three rectangular pins from Singapore need a Type A adapter in Japan.

Three rectangular pins: a plug adapter to Type A. Source: Singapore Tourism Board.
Round pins: a plug adapter to Type A. Source: Consumer Product Safety Office, Enterprise Singapore.
Each device from Singapore: read INPUT. 100-240V covers Japan's 100V; 230V alone needs a voltage converter (JNTO).
Singapore: 50Hz. Tokyo: 50Hz. Osaka: 60Hz. A 50/60Hz label covers all three.

Flow chart for travellers from Singapore: does the plug have two flat pins, and does INPUT include 100V? If not, bring a plug adapter or a voltage converter.

Figure by japan-japan.com from JNTO: Plugs and Electricity.

What official pages in Singapore say

7 statements from the Singapore Tourism Board, the Singapore Statutes Online and the Consumer Product Safety Office (Enterprise Singapore).

Singapore Tourism BoardThe standard electrical current used in Singapore is 220-240 volts AC (50 cycles) and you can use power plugs with three square prongs here.Essential travel information

Singapore Statutes Online(e) 230 volts, single phase.Electricity (Electrical Installations) Regulations, reg. 3

Singapore Statutes Online3.—(1) The supply of electricity by an electricity licensee shall be by means of alternating current, at a nominal frequency of 50 hertz.Electricity (Electrical Installations) Regulations, reg. 3

Consumer Product Safety Office (Enterprise Singapore)13-ampere (A) 3-pin fused mains plug (or Type G plug)Types of mains plugs suitable for use in Singapore

Consumer Product Safety Office (Enterprise Singapore)15A 3 round-pin mains plug (or Type M plug)Types of mains plugs suitable for use in Singapore

Consumer Product Safety Office (Enterprise Singapore)2.5A 2 round-pin mains plug (or Type C plug)Types of mains plugs suitable for use in Singapore

Consumer Product Safety Office (Enterprise Singapore)Some countries that use the same type of mains plugs as Singapore include Brunei, Hong Kong, Malaysia or the UK.Types of mains plugs suitable for use in Singapore

Visitors from Singapore in 2025

Singapore ranked 9th among countries and regions, with 726,251 visitors to Japan in 2025 (JNTO, final figures).

Visitors in 2025: 726,251
Rank: 9th
Share of all visitors: 1.7%
Change from 2024: +5.1%

Frequently asked questions

Do I need a plug adapter in Japan from Singapore?

No. The Singapore Tourism Board describes three rectangular pins for Singapore, and the Consumer Product Safety Office (Enterprise Singapore) also lists round pins. Japan's outlets take Type A plugs with two flat pins (JNTO), so bring a plug adapter to Type A.

Is Japan's voltage the same as Singapore's?

No. Japan uses 100V (JNTO); Singapore uses 230V, according to the Singapore Statutes Online.

Do I need a voltage converter in Japan from Singapore?

Only for devices rated for 230V alone that are not dual-voltage (JNTO). A charger from Singapore marked 100-240V needs none.