Temperature Converter
Enter a temperature and choose a starting unit to convert between Fahrenheit, Celsius, and Kelvin.
Last updated: September 22, 2026
Frequently asked questions
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9. 98.6°F: (98.6 − 32) × 5/9 = 37°C - normal human body temperature.
Why does temperature conversion need an offset, not just multiplication?
Fahrenheit and Celsius have different zero points (freezing water is 0°C but 32°F), so converting requires shifting the scale first, unlike length or weight conversions which only need a multiplier.
What temperature is the same number in both Celsius and Fahrenheit?
−40 degrees - it's the one point where the two scales intersect, since −40°C × 9/5 + 32 = −40°F exactly; every other temperature reads as a different number on each scale.
Does this also convert to and from Kelvin?
Yes - alongside Celsius and Fahrenheit, this converter supports Kelvin, which is useful for scientific calculations since it starts at absolute zero rather than an arbitrary reference point.
What is 180°C in an oven, in Fahrenheit?
356°F exactly, though recipes almost always round oven temperatures to the nearest common setting - 180°C is the standard rounded equivalent of 350°F, a very common baking temperature, even though the precise conversion is a few degrees higher.
What is 100°F in Celsius?
About 37.8°C - subtract 32, then multiply by 5/9: (100−32)×5/9 = 68×5/9 ≈ 37.78°C. That's just above normal human body temperature (37°C), which is why 100°F often feels notably hot outdoors.
What is 170°F in Celsius?
About 76.7°C - (170−32)×5/9 = 138×5/9 ≈ 76.67°C.
What is 73°F in Celsius?
About 22.8°C - (73−32)×5/9 = 41×5/9 ≈ 22.78°C, a comfortable room temperature.
What is 43°F in Celsius?
About 6.1°C - (43−32)×5/9 = 11×5/9 ≈ 6.11°C, just above refrigerator temperature.
What is 43°C in Fahrenheit?
109.4°F - multiply by 9/5 and add 32: 43×9/5+32 = 77.4+32 = 109.4°F, a high fever range if referring to body temperature (though a healthy human body temperature never actually reaches 43°C).
What is 73°C in Fahrenheit?
163.4°F - multiply by 9/5 and add 32: 73×9/5+32 = 131.4+32 = 163.4°F.
What is 65°F in Celsius?
About 18.3°C - (65−32)×5/9 = 33×5/9 ≈ 18.33°C, a mild, comfortable temperature.
What is 37°F in Celsius?
About 2.8°C - (37−32)×5/9 = 5×5/9 ≈ 2.78°C, just above freezing.
What is 98°F in Celsius?
About 36.7°C - (98−32)×5/9 = 66×5/9 ≈ 36.67°C, very close to normal human body temperature (which is closer to 98.6°F / 37°C).
What is 18°C in Fahrenheit?
64.4°F - multiply by 9/5 and add 32: 18×9/5+32 = 32.4+32 = 64.4°F, a mild spring/fall temperature.
What is 40°F in Celsius?
About 4.4°C - (40−32)×5/9 = 8×5/9 ≈ 4.44°C, a cold, near-refrigerator temperature.
What is 165°C in Fahrenheit?
329°F - multiply by 9/5 and add 32: 165×9/5+32 = 297+32 = 329°F, a typical baking oven temperature.
What is 165°F in Celsius?
About 73.9°C - (165−32)×5/9 = 133×5/9 ≈ 73.89°C.
What is 65°C in Fahrenheit?
149°F - multiply by 9/5 and add 32: 65×9/5+32 = 117+32 = 149°F.
What is 106°F in Celsius?
About 41.1°C - (106−32)×5/9 = 74×5/9 ≈ 41.11°C, a dangerously high fever temperature if referring to body temperature.
What is 36.7°C in Fahrenheit?
98.06°F - multiply by 9/5 and add 32: 36.7×9/5+32 = 66.06+32 = 98.06°F, right around normal human body temperature.