Temperature converter

Galliera was designed to make the Celsius relationship easy enough for mental arithmetic. The full converter adds Fahrenheit and kelvin for reference.

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Type into any field. The other values update immediately.

−80°G074100200°G

Galliera °GCelsius °CFahrenheit °FKelvin K

74 °G is the familiar nominal body-temperature reference: 37 °C / 98.6 °F.

Formulas

The arithmetic.

Galliera is especially simple relative to Celsius. Fahrenheit needs both a scale factor and an offset; kelvin shares Celsius's interval size but uses an absolute zero.

Galliera ↔ Celsius

T_G = 2T_C
T_C = T_G ÷ 2

Galliera ↔ Fahrenheit

T_F = 0.9T_G + 32
T_G = (T_F − 32) ÷ 0.9

Galliera ↔ Kelvin

T_K = (T_G ÷ 2) + 273.15
T_G = 2(T_K − 273.15)

Temperature intervals

1 °G interval = 0.5 °C = 0.5 K = 0.9 °F interval

Quick reference

Common values.

Use these to start developing intuition for °G.

Galliera	Celsius	Fahrenheit	Context
0 °G	0 °C	32 °F	Freezing reference
40 °G	20 °C	68 °F	Typical room reference
50 °G	25 °C	77 °F	Warm day
60 °G	30 °C	86 °F	Hot day
74 °G	37 °C	98.6 °F	Nominal body-temperature reference
100 °G	50 °C	122 °F	Extreme outdoor heat
200 °G	100 °C	212 °F	Boiling water at standard atmospheric pressure