convert_pressure

Converts a numeric pressure value from one unit to another. Supports SI (Pa, hPa, kPa, MPa), meteorological (bar, mbar), engineering (psi), and physical atmosphere / column units (atm, mmHg, torr, inHg).

Parameters

Parameter	Type	Required	Description
value	number	Yes	Numeric value to convert.
from	string	Yes	Source unit: Pa, hPa, kPa, MPa, bar, mbar, psi, atm, mmHg, torr, inHg
to	string	Yes	Target unit: Pa, hPa, kPa, MPa, bar, mbar, psi, atm, mmHg, torr, inHg

Response

Field	Type	Description
result	number	Converted value.

Example

{
	"value": 1,
	"from": "atm",
	"to": "Pa"
}

Result:

{
	"result": 101325.0
}

More examples

value	from	to	result
1	bar	kPa	100.0
1	psi	Pa	6894.757...
760	mmHg	atm	1.0
1013	hPa	bar	1.013

Errors

Each failure carries a precise code in the response. Argument-schema and server errors are JSON-RPC protocol errors; a rejected value is returned as a tool result with isError: true (so the agent can read the code and self-correct).

Code	When	Delivered as
invalid_arguments	value is missing or not a number, or from/to is missing or not a string.	protocol error (invalid_params)
invalid_unit	from or to is not a recognised unit. The error message lists the accepted unit strings.	tool error (isError)
internal_error	An unexpected server error.	protocol error (internal_error)

Notes

• Unit strings are case-sensitive: Pa and pa are different (only Pa is accepted).
• mmHg and torr share the same conversion factor (133.322 387 415 Pa) and are interchangeable.
• hPa and mbar are numerically equivalent (both equal 100 Pa) but are distinct unit strings.
• All results are 64-bit floating-point numbers.