Road User Tools

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Fuel cost, fuel economy, journey time, tyre pressure, power, torque, speed and distance calculators.

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calculate_fuel_cost

Calculate fuel required and journey cost from distance, fuel economy, and fuel price — including cost per kilometre and per mile.

priceobject, required

Fuel price per volume unit. Must be finite and non-negative.

economyobject, required

Vehicle fuel economy. Must be finite and greater than zero.

distanceobject, required

Journey distance. Must be finite and non-negative.

currencystring

Optional display-only currency label echoed back in the result, e.g. "GBP" or "£". No conversion is performed.

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Tools (9)

calculate_fuel_cost

Calculate fuel required and journey cost from distance, fuel economy, and fuel price — including cost per kilometre and per mile.

Argument	Type	Description
price*	object	Fuel price per volume unit. Must be finite and non-negative.
economy*	object	Vehicle fuel economy. Must be finite and greater than zero.
currency	string	Optional display-only currency label echoed back in the result, e.g. "GBP" or "£". No conversion is performed.
distance*	object	Journey distance. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "distance",
    "economy",
    "price"
  ],
  "properties": {
    "price": {
      "type": "object",
      "required": [
        "value",
        "per"
      ],
      "properties": {
        "per": {
          "enum": [
            "l",
            "gal_uk",
            "gal_us"
          ],
          "type": "string"
        },
        "value": {
          "type": "number"
        }
      },
      "description": "Fuel price per volume unit. Must be finite and non-negative.",
      "additionalProperties": false
    },
    "economy": {
      "type": "object",
      "required": [
        "value",
        "unit"
      ],
      "properties": {
        "unit": {
          "enum": [
            "mpg_uk",
            "mpg_us",
            "l_per_100km",
            "km_per_l"
          ],
          "type": "string"
        },
        "value": {
          "type": "number"
        }
      },
      "description": "Vehicle fuel economy. Must be finite and greater than zero.",
      "additionalProperties": false
    },
    "currency": {
      "type": "string",
      "description": "Optional display-only currency label echoed back in the result, e.g. \"GBP\" or \"£\". No conversion is performed."
    },
    "distance": {
      "type": "object",
      "required": [
        "value",
        "unit"
      ],
      "properties": {
        "unit": {
          "enum": [
            "km",
            "mi"
          ],
          "type": "string"
        },
        "value": {
          "type": "number"
        }
      },
      "description": "Journey distance. Must be finite and non-negative.",
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}

calculate_journey_time

Calculate journey duration from distance and average speed.

Argument	Type	Description
speed*	object	Average speed. Must be finite and greater than zero.
distance*	object	Journey distance. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "distance",
    "speed"
  ],
  "properties": {
    "speed": {
      "type": "object",
      "required": [
        "value",
        "unit"
      ],
      "properties": {
        "unit": {
          "enum": [
            "kmh",
            "mph",
            "ms",
            "kn"
          ],
          "type": "string"
        },
        "value": {
          "type": "number"
        }
      },
      "description": "Average speed. Must be finite and greater than zero.",
      "additionalProperties": false
    },
    "distance": {
      "type": "object",
      "required": [
        "value",
        "unit"
      ],
      "properties": {
        "unit": {
          "enum": [
            "km",
            "mi",
            "m"
          ],
          "type": "string"
        },
        "value": {
          "type": "number"
        }
      },
      "description": "Journey distance. Must be finite and non-negative.",
      "additionalProperties": false
    }
  },
  "additionalProperties": false
}

convert_distance

Convert a distance value between kilometres, metres, miles, yards, and feet.

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input distance unit.
value*	number	Distance value to convert. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "km",
        "m",
        "mi",
        "yd",
        "ft"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "km",
        "m",
        "mi",
        "yd",
        "ft"
      ],
      "type": "string",
      "description": "Input distance unit."
    },
    "value": {
      "type": "number",
      "description": "Distance value to convert. Must be finite and non-negative."
    }
  },
  "additionalProperties": false
}

convert_fuel_economy

Convert a fuel economy value between UK/Imperial MPG, US MPG, litres per 100 km, and kilometres per litre.

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input fuel economy unit.
value*	number	Fuel economy value to convert. Must be finite and greater than zero.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "mpg_uk",
        "mpg_us",
        "l_per_100km",
        "km_per_l"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "mpg_uk",
        "mpg_us",
        "l_per_100km",
        "km_per_l"
      ],
      "type": "string",
      "description": "Input fuel economy unit."
    },
    "value": {
      "type": "number",
      "description": "Fuel economy value to convert. Must be finite and greater than zero."
    }
  },
  "additionalProperties": false
}

convert_power

Convert an engine power value between kilowatts, mechanical horsepower (hp), and metric horsepower (PS).

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input power unit. hp is mechanical horsepower; ps is metric horsepower (PS).
value*	number	Power value to convert. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "kw",
        "hp",
        "ps"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "kw",
        "hp",
        "ps"
      ],
      "type": "string",
      "description": "Input power unit. hp is mechanical horsepower; ps is metric horsepower (PS)."
    },
    "value": {
      "type": "number",
      "description": "Power value to convert. Must be finite and non-negative."
    }
  },
  "additionalProperties": false
}

convert_pressure

Convert a tyre pressure value between PSI, bar, and kPa.

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input pressure unit.
value*	number	Pressure value to convert. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "psi",
        "bar",
        "kpa"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "psi",
        "bar",
        "kpa"
      ],
      "type": "string",
      "description": "Input pressure unit."
    },
    "value": {
      "type": "number",
      "description": "Pressure value to convert. Must be finite and non-negative."
    }
  },
  "additionalProperties": false
}

convert_speed

Convert a speed value between km/h, mph, m/s, and knots.

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input speed unit.
value*	number	Speed value to convert.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "kmh",
        "mph",
        "ms",
        "kn"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "kmh",
        "mph",
        "ms",
        "kn"
      ],
      "type": "string",
      "description": "Input speed unit."
    },
    "value": {
      "type": "number",
      "description": "Speed value to convert."
    }
  },
  "additionalProperties": false
}

convert_torque

Convert a torque value between newton metres (N·m) and pound-feet (lb·ft).

Argument	Type	Description
to	string	Optional target unit. When omitted, all units are returned.
from*	string	Input torque unit.
value*	number	Torque value to convert. Must be finite and non-negative.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value",
    "from"
  ],
  "properties": {
    "to": {
      "enum": [
        "nm",
        "lbft"
      ],
      "type": "string",
      "description": "Optional target unit. When omitted, all units are returned."
    },
    "from": {
      "enum": [
        "nm",
        "lbft"
      ],
      "type": "string",
      "description": "Input torque unit."
    },
    "value": {
      "type": "number",
      "description": "Torque value to convert. Must be finite and non-negative."
    }
  },
  "additionalProperties": false
}

list_tools

List the public Road User Tools calculators currently available.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "additionalProperties": false
}