BrainyCalc Docs — MCP Unit Conversions

API Reference

MCP Unit Conversions

High-precision conversion engine supporting 78 measurement tools across SI units, Imperial systems, thermodynamics, fluid dynamics, electromagnetism, typography, and text case transformations.

Common Converters

convert_length

Convert between metric, imperial, astronomical, and historical distance units.

geometrymcp tool

Parameter	Type	Required	Description
`value`	number	required	Numeric quantity to convert
`fromUnit`	string	required	Source unit (e.g. `km`, `mile`, `foot`, `light_year`, `angstrom`)
`toUnit`	string	required	Target unit (e.g. `m`, `nautical_mile`, `yard`, `inch`)

Request / Response

// Convert 10 Kilometers to Miles
{ "value": 10, "fromUnit": "km", "toUnit": "mile" }

// Response
{
  "value": 10,
  "fromUnit": "km",
  "toUnit": "mile",
  "convertedValue": 6.213711922
}

convert_mass

Convert mass and weight measurements between metric, avoirdupois, troy, and specialized units.

physicsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Value to convert
`fromUnit`	string	required	Source unit (e.g. `kg`, `lb`, `stone`, `troy_oz`, `carat`)
`toUnit`	string	required	Target unit (e.g. `g`, `oz`, `metric_ton`, `grain`)

Request / Response

{ "value": 5, "fromUnit": "kg", "toUnit": "lb" }

{
  "value": 5,
  "fromUnit": "kg",
  "toUnit": "lb",
  "convertedValue": 11.02311311
}

convert_volume

Liquid volume conversion supporting metric, US customary, UK imperial, and oil industry standards.

fluidsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Volume value
`fromUnit`	string	required	Source unit (e.g. `liter`, `gallon_us`, `fl_oz_us`, `barrel_oil`)
`toUnit`	string	required	Target unit (e.g. `ml`, `gallon_uk`, `cubic_m`, `cup_us`)

Request / Response

{ "value": 10, "fromUnit": "gallon_us", "toUnit": "liter" }

{
  "value": 10,
  "fromUnit": "gallon_us",
  "toUnit": "liter",
  "convertedValue": 37.85411784
}

convert_temperature

Exact affine temperature conversions across Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur scales.

thermodynamicsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Temperature magnitude
`fromUnit`	enum	required	`c` · `f` · `k` · `r` · `re` (or full scale name)
`toUnit`	enum	required	`c` · `f` · `k` · `r` · `re` (or full scale name)

Note on Temperature Differences

For temperature intervals (deltas without baseline offset shifts), use convert_temperature_interval instead.

Request / Response

{ "value": 100, "fromUnit": "celsius", "toUnit": "fahrenheit" }

{
  "value": 100,
  "fromUnit": "celsius",
  "toUnit": "fahrenheit",
  "convertedValue": 212
}

convert_pressure

Pressure unit calculations for barometric, industrial, hydraulic, and manometric applications.

engineeringmcp tool

Parameter	Type	Required	Description
`value`	number	required	Pressure magnitude
`fromUnit`	string	required	Source unit (e.g. `atm`, `psi`, `bar`, `kpa`, `mmhg`, `torr`)
`toUnit`	string	required	Target unit (e.g. `pa`, `psi`, `mbar`, `inhg`, `inH2O`)

Request / Response

{ "value": 1, "fromUnit": "atm", "toUnit": "psi" }

{
  "value": 1,
  "fromUnit": "atm",
  "toUnit": "psi",
  "convertedValue": 14.69594878
}

convert_base

Positional radix conversion between binary, octal, decimal, hexadecimal, or custom bases (2 to 36).

computingmcp tool

Parameter	Type	Required	Description
`value`	string	required	String representation of number in source radix
`fromBase`	number	required	Source radix (integer 2 to 36)
`toBase`	number	required	Target radix (integer 2 to 36)

Request / Response

{ "value": "FF", "fromBase": 16, "toBase": 10 }

{
  "originalValue": "FF",
  "fromBase": 16,
  "toBase": 10,
  "convertedValue": "255",
  "decimalValue": 255
}

convert_data_storage

Convert data sizes across SI decimal prefixes (KB, MB, GB) and IEC binary prefixes (KiB, MiB, GiB).

computingmcp tool

Parameter	Type	Required	Description
`value`	number	required	Data quantity
`fromUnit`	string	required	Source unit (`B`, `KB`, `MB`, `GB`, `TB`, `KiB`, `MiB`, `GiB`, `TiB`, etc.)
`toUnit`	string	required	Target unit

Request / Response

{ "value": 1, "fromUnit": "GB", "toUnit": "GiB" }

{
  "value": 1,
  "fromUnit": "GB",
  "toUnit": "GiB",
  "convertedValue": 0.9313225746
}

Engineering & Physics

convert_force

Force unit conversions covering Newtons, dynes, pound-force, kiloponds, and tons-force.

mechanicsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Force quantity
`fromUnit`	string	required	Source unit (`n`, `kn`, `dyne`, `kgf`, `lbf`, `kip`, `pdl`)
`toUnit`	string	required	Target unit

Request / Response

{ "value": 100, "fromUnit": "n", "toUnit": "lbf" }

{
  "value": 100,
  "fromUnit": "n",
  "toUnit": "lbf",
  "convertedValue": 22.48089431
}

convert_torque

Moment of force / torque calculations (Newton-meters, pound-feet, kilogram-force meters).

mechanicsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Torque magnitude
`fromUnit`	string	required	Source unit (`n_m`, `kn_m`, `kgf_m`, `lbf_ft`, `lbf_in`, `ozf_in`)
`toUnit`	string	required	Target unit

Request / Response

{ "value": 50, "fromUnit": "n_m", "toUnit": "lbf_ft" }

{
  "value": 50,
  "fromUnit": "n_m",
  "toUnit": "lbf_ft",
  "convertedValue": 36.87810756
}

convert_viscosity_dynamic

Dynamic/absolute viscosity conversions across Pascal-seconds, Poise, Centipoise, and imperial units.

fluid dynamicsmcp tool

Parameter	Type	Required	Description
`value`	number	required	Dynamic viscosity value
`fromUnit`	string	required	Source unit (`pa_s`, `cp`, `p`, `lbf_s_per_ft2`, `lb_per_ft_s`)
`toUnit`	string	required	Target unit

Request / Response

{ "value": 1, "fromUnit": "pa_s", "toUnit": "cp" }

{
  "value": 1,
  "fromUnit": "pa_s",
  "toUnit": "cp",
  "convertedValue": 1000
}

Electrical & Specialized

convert_frequency

Frequency unit conversion covering Hertz, RPM, RPS, and angular frequencies.

wavesmcp tool

Parameter	Type	Required	Description
`value`	number	required	Frequency scalar
`fromUnit`	string	required	Source unit (`hz`, `khz`, `mhz`, `ghz`, `rpm`, `rad_per_s`)
`toUnit`	string	required	Target unit

Request / Response

{ "value": 3000, "fromUnit": "rpm", "toUnit": "hz" }

{
  "value": 3000,
  "fromUnit": "rpm",
  "toUnit": "hz",
  "convertedValue": 50
}

convert_wavelength_from_frequency

Computes electromagnetic wavelength in meters from frequency in Hertz (using speed of light $c = 299,792,458\text{ m/s}$).

electromagneticsmcp tool

Parameter	Type	Required	Description
`frequencyHz`	number	required	Electromagnetic frequency in Hertz (Hz)

Request / Response

{ "frequencyHz": 2400000000 }

{
  "frequencyHz": 2400000000,
  "wavelength_m": 0.12491352416666667
}

convert_case

Transform text strings across programming and typography naming conventions.

text utilitymcp tool

Parameter	Type	Required	Description
`text`	string	required	Raw input string
`toCase`	enum	required	`upper` · `lower` · `title` · `sentence` · `camel` · `pascal` · `snake` · `kebab` · `constant`

Request / Response

{ "text": "hello world unit converter", "toCase": "camel" }

"helloWorldUnitConverter"