Temperature Converter
Convert Celsius, Fahrenheit and Kelvin instantly, including oven and weather temperatures, with the exact formulas and absolute-zero checks shown.
Your results
Calculation breakdown
- Celsius to Fahrenheit
- °F = °C × 9/5 + 32
- Fahrenheit to Celsius
- °C = (°F − 32) × 5/9
- Celsius to Kelvin
- K = °C + 273.15
Worked example
25°C converts to 77°F, a comfortable Australian spring day expressed in Fahrenheit. An American recipe that asks for a 350°F oven needs about 176.67°C, so most Australian cooks would set 175°C or 180°C.
Assumptions
- Uses the exact scientific conversion formulas; the result is displayed to two decimal places.
- Temperatures below absolute zero (−273.15 °C, −459.67 °F or 0 K) are rejected because they are not physically possible.
How this calculator works
This calculator converts a temperature value between Celsius, Fahrenheit and Kelvin using the standard scientific formulas. Australia uses Celsius for weather, cooking and health, while Fahrenheit is still seen in some older recipes and American sources, and Kelvin is used in scientific contexts.
Converting oven, weather and body temperatures
Australia uses degrees Celsius for weather forecasts, oven settings and body temperature, but recipes, appliance manuals and websites from the United States often use Fahrenheit. Enter the value, choose the unit it is in and the unit you need, and the calculator applies the exact formula.
Oven temperatures are usually rounded to the nearest dial setting after converting. A 350°F recipe converts to about 176.67°C, which most cooks set at 175°C or 180°C. Fan-forced ovens are commonly set lower than conventional ovens, so also check the recipe and your oven manual.
- 0°C = 32°F (water freezes)
- 100°C = 212°F (water boils at sea level)
- 37°C = 98.6°F (typical body temperature)
- −40°C = −40°F
Why Kelvin and absolute zero matter
Kelvin is the scientific temperature scale. It uses the same size degree as Celsius but starts at absolute zero, so 0 K equals −273.15°C. Kelvin values are written without a degree symbol.
Nothing can be colder than absolute zero, so the converter rejects inputs below −273.15°C, −459.67°F or 0 K rather than returning an impossible figure. Converted results are shown to two decimal places.
Frequently asked questions
What temperature scale does Australia use?
Australia uses Celsius for everyday purposes including weather forecasts, oven temperatures and body temperature readings.
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32; this calculator performs that conversion automatically.
Why can't I enter a temperature below absolute zero?
Absolute zero (0 K, −273.15°C or −459.67°F) is the lowest possible temperature, so the calculator rejects anything colder instead of showing an impossible result.
Content responsibility
Maintained by CalcAussie and last updated 15 October 2026. Checks applied: calculation method, worked examples, Australian terminology, material assumptions, official references where an external rule applies, and user-facing limitations.
Calculator results remain estimates based on the figures entered. Check material decisions against current official information and report a suspected error so it can be reproduced and corrected.