Temperature Converter | Celsius Fahrenheit Kelvin

How do I convert Celsius to Fahrenheit?

Use the formula °F = (°C × 9/5) + 32. Example: 20°C = (20 × 1.8) + 32 = 36 + 32 = 68°F. A quick mental shortcut: double the Celsius value, subtract 10%, then add 32. So 25°C → 50 − 5 + 32 = 77°F. For freezing: 0°C = 32°F; for boiling: 100°C = 212°F.

Is 180°C the same as 350°F for baking?

180°C converts to exactly 356°F, so it is very close to but not exactly 350°F. In practice, oven recipes treat 180°C and 350°F as equivalent because home ovens fluctuate ±10–15°F anyway. For precise baking: 160°C = 325°F, 180°C = 356°F, 200°C = 392°F, 220°C = 428°F.

What temperature is the same in both Fahrenheit and Celsius?

Fahrenheit and Celsius meet at exactly −40°. At −40°, both scales read the same number. This is because the formula °F = °C × 9/5 + 32 gives −40 = −40 × 1.8 + 32 = −72 + 32 = −40. This is a famous trivia fact often used to double-check conversion logic.

What is normal body temperature in Fahrenheit and Celsius?

The long-cited standard is 98.6°F (37.0°C), which is actually a conversion of a 19th-century German measurement of 37°C. Modern research finds average body temperature closer to 97.9°F (36.6°C). A fever is generally defined as 100.4°F (38.0°C) or higher. Oral, rectal, and ear measurements can differ by about 0.5–1°F.

What is absolute zero in Celsius and Fahrenheit?

Absolute zero is 0 Kelvin = −273.15°C = −459.67°F. It is the theoretical lowest possible temperature, where molecular motion stops. It cannot be reached in practice but scientists have gotten within billionths of a degree. The Kelvin scale starts at absolute zero, making it ideal for scientific calculations — 0 K has no negative values.