Unit Converter
Unit conversion is necessary whenever data comes from different measurement systems. Australia officially uses the metric (SI) system, kilometres, kilograms, litres, Celsius, but imperial units persist in some trades and contexts (building materials are often sold in feet and inches, US recipes use cups and ounces, UK recipes use stone for weight). Temperature conversion uses exact formulas: Celsius to Fahrenheit is (°C × 9/5) + 32, and Fahrenheit to Celsius is (°F − 32) × 5/9; Kelvin equals °C + 273.15. Volume conversions require care because the US and UK use different gallon, cup, and fluid ounce values, a US gallon is 3.785 L while a UK/imperial gallon is 4.546 L. This converter covers length (mm, cm, m, km, in, ft, yd, mi), weight (g, kg, lb, oz, stone), volume (mL, L, fl oz, cups, tbsp, tsp, pints, quarts, gallons), temperature (°C, °F, K), and area (m², km², ft², acres, hectares). Select a category, enter a value, choose your units, and results update instantly with high precision.
Frequently Asked Questions
How do I convert between metric and imperial units?
Select your conversion category (length, weight, volume, or temperature) from the dropdown, enter a value, then choose your source and target units. The calculator converts instantly as you type, showing results to 6 decimal places of precision. This covers all common metric-to-imperial conversions including millimetres to inches, kilograms to pounds, and Celsius to Fahrenheit.
Does the calculator handle temperature conversions?
Yes. Temperature conversions use the standard formulas: Celsius to Fahrenheit is (C x 9/5) + 32, and Fahrenheit to Celsius is (F - 32) x 5/9. The calculator also converts to and from Kelvin for scientific applications.
What units does the length converter support?
The length converter supports metric units: millimetres (mm), centimetres (cm), metres (m), and kilometres (km). Imperial options include inches (in), feet (ft), yards (yd), and miles (mi). Select any source and target unit from the dropdown menus and enter a value to convert between them with high precision.
Can I convert between volume units?
Yes. The volume converter handles millilitres (mL), litres (L), fluid ounces (floz), cups, tablespoons (tbsp), teaspoons (tsp), pints (pt), quarts (qt), and gallons (gal). Note that US and UK gallons differ significantly: a US gallon is about 3.79 litres while a UK gallon is 4.55 litres. The calculator uses the US standard by default, so always verify which system you're working with.
How precise are the conversions?
All conversions are calculated to 6 decimal places internally and rounded to a sensible number of significant figures for display. The calculator uses the exact mathematical conversion between units, not an approximation or lookup table. This means you get reliable precision even for unusual conversions or large numbers.
Why do some unit names look the same but mean different amounts?
The US and UK measurement systems share many unit names but have different values. A US cup is 236.6 millilitres while a UK cup is 284.1 millilitres. A US gallon is significantly smaller than a UK gallon (3.79L vs 4.55L). The fluid ounce also differs between systems. Always check which measurement system you're using when converting between US and UK sources.