Conversions & Everyday
Unit Converter
Convert between hundreds of units across length, weight, volume, area, speed, pressure, energy, and more.
How this calculator works
The converter stores precise conversion factors for every unit relative to a base unit in each category (e.g. metres for length, kilograms for weight). To convert, it divides the input by the 'from' unit's factor and multiplies by the 'to' unit's factor. Temperature uses separate formulas. The result shows the conversion and the formula used.
Options change based on category
Options change based on category
Our pick
The Barefoot Investor (Classic Edition)
One of the most useful tools Australians are buying right now.
We independently recommend products. We may earn a commission at no extra cost to you.
Something worth checking out: the Casio Scientific Calculator ($27.89, 4.4★ from 8.3K reviews) is worth a look. Affiliate link
FAQ
Frequently asked questions
What unit categories are available?
This converter covers: length (mm to miles), weight (mg to tonnes), volume (mL to gallons), area (cm² to acres), speed (km/h to knots), temperature (°C, °F, K), pressure (kPa, PSI, bar, atm), energy (kJ, kcal, Wh, BTU), digital storage (bytes to TB), time, angles, and frequency.
Is a US gallon the same as an imperial gallon?
No. A US gallon is 3.785 litres, while an Imperial gallon is 4.546 litres. Australia historically used Imperial gallons before metrication. US recipes and fuel economy figures use US gallons. This converter distinguishes between the two.
How many square metres in an acre?
1 acre = 4,046.86 m² (roughly 0.4 hectares). 1 hectare = 10,000 m² = 2.471 acres. Australian property land sizes are typically listed in square metres or hectares.
Related
Related calculators
Metric-Imperial Converter
Convert between metric and imperial units for length, weight, temperature, and volume.
Open calculatorCooking Measurement Converter
Convert between cups, tablespoons, teaspoons, millilitres, grams, and ounces for cooking.
Open calculatorCurrency Converter
Convert between Australian dollars and major world currencies at mid-market exchange rates.
Open calculatorGST Calculator
Add GST, remove GST, or find the GST component of any amount — Australian 10% GST.
Open calculator