A large electric kettle is convenient when several people need hot water together. For one mug at a time, its size may be less useful. Compare your normal quantity with both the minimum and maximum permitted fill, rather than assuming a larger model always gives more flexibility.
The minimum matters because the appliance must operate with enough water for its design. Do not use less than instructed to save time or water. The maximum matters for the way boiling water moves and for safe pouring. Neither mark is decorative.
Lift it as if it were full
The handle, spout and balance influence how comfortably you pour. A kettle that feels light while empty may be difficult with water inside. If you can examine a model, check the grip and the lid opening without assuming you will always use it at its smallest fill.
A broad lid can make filling and cleaning easier, while a narrow opening may be more awkward. Look at whether the water-level markings are readable from your usual angle. Some gauges sit partly behind the handle and can be inconvenient for particular users.
Check whether the lid opens in a way that keeps your hands clear of hot steam during use. Follow the manual when refilling, cleaning or handling a recently boiled kettle. A familiar-looking design can still have different operating instructions.
Make room for the base and cord
Measure the entire footprint, including the handle and spout. Choose an operating location where the cord does not cross a sink, hot cooking surface or busy walkway, and follow the product's electrical requirements. Automatic shutoff does not remove the need for a suitable location and correct filling.
Look at the cleaning and descaling directions. Water conditions and use affect buildup, so use the procedure and products the manufacturer permits rather than an improvised strong cleaner. A removable filter may also need regular attention.
For a small kitchen, a modest kettle with a useful fill range can be enough. If you often share drinks or need larger quantities, a bigger model may fit the routine better. Capacity is helpful when it reflects actual use, not simply the largest number on the shelf.