Temperature Converter (Celsius to Fahrenheit)

How it's calculated

Celsius to Fahrenheit formula: multiply by 1.8 (or 9/5), then add 32. °F = °C × 1.8 + 32. Example: 38 °C × 1.8 = 68.4, and 68.4 + 32 = 100.4 °F. Fahrenheit to Celsius formula: subtract 32, then multiply by 5/9. °C = (°F − 32) × 5/9. Example: 100 °F − 32 = 68, and 68 × 5/9 = 37.8 °C. Kelvin: K = °C + 273.15, and °C = K − 273.15. Centigrade is the older name for Celsius. Common temperatures: 0 °C = 32 °F (water freezes), 25 °C = 77 °F (room temperature), 37 °C = 98.6 °F (normal body temperature), 38 °C = 100.4 °F (fever), 40 °C = 104 °F (a very hot day or high fever), 45 °C = 113 °F (peak summer heat in Pakistan), 100 °C = 212 °F (water boils). An oven at 350 °F is about 177 °C. At −40, Celsius and Fahrenheit are equal. Quick estimate: double the Celsius number and add 30. For 20 °C that gives 70 °F (the exact answer is 68 °F). It is fine for weather, but use the exact formula for fever and baking.