Here's my guide on how to easily scale properly for that bit of extra immersion.
Recommended Converter
TheCalculatorSite • [Height Converter]
Size Comparison Site (up to 6 figures)
OddsEnds • [Comparing Heights]
How to Scale Addon
Addon based on this guide • Made by @gardener • [Addon Download]
List of Model Heights (Scale 1)
How to Scale
How to Measure Models Manually
Useful links to check out
Height chart on Wowpedia - Not all ac