Conversions Conversion Chart

Temperature Conversion Chart (C/F/K)

Published September 8, 2026

Conversion formulas and common reference points for Celsius, Fahrenheit, and Kelvin. For the reasoning behind these formulas, see How Temperature Conversion Works.

F = C × 9/5 + 32
C = (F − 32) × 5/9
K = C + 273.15

Common Reference Points

Reference Celsius Fahrenheit Kelvin
Absolute zero -273.15 -459.67 0
Water freezes 0 32 273.15
Average body temperature 37 98.6 310.15
Water boils 100 212 373.15

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Frequently Asked Questions

Why does Fahrenheit use 32 and 9/5?

The Fahrenheit scale sets water’s freezing point at 32 and boiling point at 212, a 180-degree span. Celsius uses a 100-degree span for the same range, so the ratio between the two scales works out to 9/5.

Can Kelvin be negative?

No. Zero Kelvin is absolute zero, the coldest temperature theoretically possible, so Kelvin values never go below zero.

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