Metric vs Imperial: A Traveller's Guide to Converting Units

Cross a border and the numbers change. Speed limits, recipe quantities, body weight and the weather forecast all switch systems, and the mental gymnastics can be exhausting. A few quick conversions — and our Unit Converter for the exact figure — make travel far smoother.

Distance and speed

One mile is about 1.6 kilometres, so a 60 mph limit is roughly 97 km/h. To go the other way, a handy estimate is to multiply kilometres by 0.6 to get miles. For longer distances the small rounding error rarely matters when you are simply planning a journey.

Temperature

Temperature trips up the most travellers because the conversion is a formula, not a simple multiplier. A rough mental shortcut: double the Celsius figure and add 30 for an approximate Fahrenheit. So 20°C is about 70°F — close enough to decide what to wear. For accuracy, the converter handles the exact maths.

Weight and groceries

One kilogram is about 2.2 pounds. When shopping, a kilo of produce is a little over two pounds, and 500 grams is roughly a pound. Knowing this stops sticker shock at markets that price by an unfamiliar unit.

Volume for cooking and fuel

A litre is about 1.06 US quarts, and a US gallon is about 3.8 litres. At the pump or in the kitchen, these let you judge quantities quickly. Recipes are where precision matters most, so convert exactly rather than by feel when baking.

The smart traveller's habit

Memorise the rough multipliers for quick decisions, and keep an exact converter handy for anything that has to be right — medication doses, baking, fuel budgeting. Estimate first, confirm when it counts, and the two systems stop feeling like a barrier.

Frequently Asked Questions