How to Choose an Electric Kettle: Size, Power, Material and Features

How Big Should an Electric Kettle Be?

Capacity is the first thing to settle, because it affects boil time, counter space and how often you refill. Most household electric kettles hold 1.5L to 1.7L, which fills about six cups and suits two to four people. A kettle of 1L or less makes sense for one person, an office desk or a small kitchen, but it means refilling when you have guests. Larger households, or anyone who makes several pots of tea in a row, may prefer 1.7L or above. Boiling only the water you need saves time and energy, as long as you stay above the minimum fill line. If your household goes through a lot of hot water, a water boiler may suit you better than a kettle, and our comparison of a hot water dispenser vs electric kettle explains the difference.

How Much Power Does an Electric Kettle Need?

Wattage determines how quickly a kettle brings water to the boil. Many full-size electric kettles run at around 2000W to 2400W, and a standard Australian household power point is rated at 10 amps, which allows up to roughly 2400W. A higher wattage generally boils the same amount of water faster, which you will notice most if you boil a full kettle several times a day. Lower wattage kettles, such as many compact glass models, take longer but still work well for a cup or two. Wattage is listed in the product specifications, so compare like with like: a 1.5L kettle at 2200W will usually boil noticeably faster than a 1.5L kettle at 1200W. Speed is not the only factor, and some people prefer a slightly slower, quieter kettle in an open-plan home.

Glass, Stainless Steel or Plastic-Free?

Material affects appearance, weight and how easy the kettle is to keep clean. Stainless steel is durable, will not shatter if knocked and tends to hide limescale better than glass, though you cannot see the water level without a gauge. Glass lets you watch the water boil and spot limescale early, which many people like, but it is heavier than plastic and needs a little more care. Some kettles pair a stainless steel interior with a plastic outer shell, so if you want to avoid plastic where water touches, check what the lid, spout and inner surfaces are made from. We cover this in more depth in our guides to glass vs stainless steel kettles and what to look for in a plastic-free kettle.

Which Features Are Worth Having?

Beyond size, power and material, a handful of features change how a kettle fits into your day. Auto shut-off and boil-dry protection are the two safety features worth looking for on any model. A 360 degree cordless base makes it easier to lift and replace the kettle with either hand. Variable temperature control suits tea and coffee drinkers, since green and white teas are usually brewed below boiling, while black tea and many herbal infusions are brewed closer to 100C. A keep-warm function holds the temperature after boiling, which helps if you make drinks throughout the morning. Built-in tea infusers add convenience for loose-leaf drinkers, and we explain how they work in our guide to what a tea infuser kettle is. If you mostly boil water for cooking or instant drinks, a simple model without extras is usually enough.

Choosing by What Matters to You

If you are unsure which factor should decide it, start from your own routine rather than looking for one best kettle:

Frequently Asked Questions