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Convert-Temperature

Posted on by Øyvind Kallstad

This function lets you convert between different units of temperature.

Supported units are ‘Celsius’, ‘Fahrenheit’, ‘Kelvin’, ‘Rankine’, ‘Delisle’, ‘Newton’, ‘Réaumur’ and ‘Rømer’.

ConvertTemperature


function Convert-Temperature {
<#
.SYNOPSIS
Convert between different units of temperature.
.DESCRIPTION
This functions lets you convert between different units of temperature. You choose the
unit you want to convert from, and the output will include an object with the value
converted to all supported units. Supported units are 'Celsius', 'Fahrenheit', 'Kelvin',
'Rankine', 'Delisle', 'Newton', 'Réaumur' and 'Rømer'.
.EXAMPLE
Convert-Temperature -Value 35 -From Celsius
.NOTES
Author: Øyvind Kallstad
Date: 10.05.2015
Version: 1.0
.LINK
http://en.wikipedia.org/wiki/Conversion_of_units_of_temperature
#>
[CmdletBinding()]
param (
# The value you want to convert.
[Parameter(Position = 0, ValueFromPipeline)]
[ValidateRange([double]::MinValue,[double]::MaxValue)]
[double] $Value,
# The unit you want to convert from. Available units are 'Celsius', 'Fahrenheit', 'Kelvin',
# 'Rankine', 'Delisle', 'Newton', 'Réaumur' and 'Rømer'.
[Parameter(Position = 1)]
[ValidateSet('Celsius','Fahrenheit','Kelvin','Rankine','Delisle','Newton','Réaumur','Rømer')]
[string] $From,
# How many decimals you want to include in return values.
[Parameter()]
[ValidateRange(0,15)]
[int] $Decimals = 2
)
switch ($From) {
'Celsius' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round($Value, $Decimals)
Fahrenheit = [math]::Round(($Value * (9/5) + 32), $Decimals)
Kelvin = [math]::Round(($Value + 273.15), $Decimals)
Rankine = [math]::Round((($Value + 273.15) * (9/5)), $Decimals)
Delisle = [math]::Round(((100 – $Value) * (3/2)), $Decimals)
Newton = [math]::Round(($Value * (33/100)), $Decimals)
Réaumur = [math]::Round(($Value * (4/5)), $Decimals)
Rømer = [math]::Round(($Value * (21/40) + 7.5), $Decimals)
});break
}
'Fahrenheit' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value – 32) * (5/9)), $Decimals)
Fahrenheit = [math]::Round($Value, $Decimals)
Kelvin = [math]::Round((($Value + 459.67) * (5/9)), $Decimals)
Rankine = [math]::Round(($Value + 459.67), $Decimals)
Delisle = [math]::Round(((212 – $Value) * (5/6)), $Decimals)
Newton = [math]::Round((($Value – 32) * (11/60)), $Decimals)
Réaumur = [math]::Round((($Value – 32) * (4/9)), $Decimals)
Rømer = [math]::Round((($Value – 32) * (7/24) + 7.5), $Decimals)
});break
}
'Kelvin' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value – 273.15), $Decimals)
Fahrenheit = [math]::Round(($Value * (9/5) – 459.67), $Decimals)
Kelvin = [math]::Round($Value, $Decimals)
Rankine = [math]::Round(($Value * (9/5)), $Decimals)
Delisle = [math]::Round(((373.15 – $Value) * (3/2)), $Decimals)
Newton = [math]::Round((($Value – 273.15) * (33/100)), $Decimals)
Réaumur = [math]::Round((($Value – 273.15) * (4/5)), $Decimals)
Rømer = [math]::Round((($Value – 273.15) * (21/40) + 7.5), $Decimals)
});break
}
'Rankine' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value – 491.67) * (5/9)), $Decimals)
Fahrenheit = [math]::Round(($Value – 459.67), $Decimals)
Kelvin = [math]::Round(($Value * (5/9)), $Decimals)
Rankine = [math]::Round($Value, $Decimals)
Delisle = [math]::Round(((671.67 – $Value) * (5/6)), $Decimals)
Newton = [math]::Round((($Value – 491.67) * (11/60)), $Decimals)
Réaumur = [math]::Round((($Value – 491.67) * (4/9)), $Decimals)
Rømer = [math]::Round((($Value – 491.67) * (7/24) + 7.5), $Decimals)
});break
}
'Delisle' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((100 – $Value * (2/3)), $Decimals)
Fahrenheit = [math]::Round((212 – $Value * (6/5)), $Decimals)
Kelvin = [math]::Round((373.15 – $Value * (2/3)), $Decimals)
Rankine = [math]::Round((671.67 – $Value * (6/5)), $Decimals)
Delisle = [math]::Round($Value, $Decimals)
Newton = [math]::Round((33 – $Value * (11/50)), $Decimals)
Réaumur = [math]::Round((80 – $Value * (8/15)), $Decimals)
Rømer = [math]::Round((60 – $Value * (7/20)), $Decimals)
});break
}
'Newton' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value * (100/33)), $Decimals)
Fahrenheit = [math]::Round(($Value * (60/11) + 32), $Decimals)
Kelvin = [math]::Round(($Value * (100/33) + 273.15), $Decimals)
Rankine = [math]::Round(($Value * (60/11) + 491.67), $Decimals)
Delisle = [math]::Round(((33 – $Value) * (50/11)), $Decimals)
Newton = [math]::Round($Value, $Decimals)
Réaumur = [math]::Round(($Value * (80/33)), $Decimals)
Rømer = [math]::Round(($Value * (35/22) + 7.5), $Decimals)
});break
}
'Réaumur' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round(($Value * (5/4)), $Decimals)
Fahrenheit = [math]::Round(($Value * (9/4) + 32), $Decimals)
Kelvin = [math]::Round(($Value * (5/4) + 273.15), $Decimals)
Rankine = [math]::Round(($Value * (9/4) + 491.67), $Decimals)
Delisle = [math]::Round(((80 – $Value) * (15/8)), $Decimals)
Newton = [math]::Round(($Value * (33/80)), $Decimals)
Réaumur = [math]::Round($Value, $Decimals)
Rømer = [math]::Round(($Value * (21/32) + 7.5), $Decimals)
});break
}
'Rømer' {
Write-Output ([PSCustomObject] [Ordered] @{
Celsius = [math]::Round((($Value – 7.5) * (40/21)), $Decimals)
Fahrenheit = [math]::Round((($Value – 7.5) * (24/7) + 32), $Decimals)
Kelvin = [math]::Round((($Value – 7.5) * (40/21) + 273.15), $Decimals)
Rankine = [math]::Round((($Value – 7.5) * (24/7) + 491.67), $Decimals)
Delisle = [math]::Round(((60 – $Value) * (20/7)), $Decimals)
Newton = [math]::Round((($Value – 7.5) * (22/35)), $Decimals)
Réaumur = [math]::Round((($Value – 7.5) * (32/21)), $Decimals)
Rømer = [math]::Round($Value, $Decimals)
});break
}
}
}

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Convert-Temperature.ps1

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