Module units 

Converting readings between real-world units.

Cheap environmental sensors report whatever unit their datasheet chose - a BME280 gives pressure in pascals, a thermocouple in degrees Celsius - while the person reading a dashboard thinks in another. These are the exact, named conversions for the units the cookbook uses most, so a conversion is a call with an obvious name rather than a magic constant copied into application code.

Functions

celsius_to_fahrenheit

Converts a temperature from degrees Celsius to degrees Fahrenheit.

celsius_to_kelvin

Converts a temperature from degrees Celsius to kelvin.

fahrenheit_to_celsius

Converts a temperature from degrees Fahrenheit to degrees Celsius.

hectopascals_to_pascals

Converts a pressure from hectopascals (millibars) to pascals.

kelvin_to_celsius

Converts a temperature from kelvin to degrees Celsius.

kilopascals_to_pascals

Converts a pressure from kilopascals to pascals.

pascals_to_hectopascals

Converts a pressure from pascals to hectopascals (millibars).

pascals_to_kilopascals

Converts a pressure from pascals to kilopascals.

pascals_to_psi

Converts a pressure from pascals to pounds per square inch.

percent_to_ratio

Converts a percentage to a fraction in 0.0..=1.0.

psi_to_pascals

Converts a pressure from pounds per square inch to pascals.

ratio_to_percent

Converts a fraction in 0.0..=1.0 to a percentage.