Function: si_unit_conversion
This tool belongs to the Math API, which provides various mathematical operations. Tool description: Convert a value from one SI unit to another.
Parameters: value: type: float
description: Value to be converted.
unit_in: type: string
description: Unit of the input value.
unit_out: type: string
description: Unit to convert the value to. 
Required parameters: value, unit_in, unit_out
Response: result: type: float
description: Converted value in the new unit.