A universal travel adapter is one block with sliding or stacked pins that fits most of the world's sockets, plus sockets on the front for your own plugs. It is the most useful £15 you can spend on travel gear — as long as you understand what it does not do.

It does not convert voltage

Every universal adapter is passive metal. It rearranges pins; it does not change 230 V into 120 V. The word "converter" on the packaging usually refers to the USB ports inside, which convert AC to 5 V DC for charging — not to any change in mains voltage.

If your device is single-voltage (a hairdryer, a kettle, an old radio), no universal adapter will make it safe on the wrong grid.

What to check before buying

  • Earth connection. Many cheap adapters connect only live and neutral. If you plug in a laptop with a three-pin plug, the case is unearthed.
  • Wattage rating. Good adapters are rated 2500 W; cheap ones 1380 W or less. The rating is about the contacts and plastic, not electronics.
  • Pin quality. Thin, springy brass deforms after a few trips and makes poor contact, which generates heat. Look for solid pins and a firm fit.
  • USB-C PD output. Modern adapters include a 30–65 W USB-C port, which lets you charge a laptop without the brick at all.

What universal adapters do not cover

  • South Africa (Type M) — the large three-round-pin socket. Most universal adapters omit it; buy a dedicated M adapter.
  • India's Type D in older buildings — sometimes included, often loose.
  • Italy's 16 A Type L — a Europlug usually fits the modern combined socket, but old 16 A-only sockets reject it.
  • Brazil's Type N — included on better adapters, missing on cheap ones.

The loose-fit problem

A universal adapter is heavier than a single-country one, and its pins are held by plastic rather than by the socket's own springs. In a loose wall socket it can sag and lose contact, which arcs and heats. In older buildings, support it or use a short extension lead.

Surge protection

In countries with unstable supply, a small surge-protected power strip between the adapter and your devices is worth more than a more expensive adapter. It also gives you several sockets from one wall outlet.

Buy: one universal adapter with earthed contacts, a 2500 W rating and at least one USB-C PD port. Also buy: a single-country adapter for wherever you go most often — it is smaller, lighter and grips better.

Check a route Adapter vs converter