Commute CO2 footprint by mode API

Compute annual commute CO2e: oneWayKm x 2 x days/week x weeks/year x mode factor (kg CO2e/passenger-km): car 0.171, carpool 0.086, bus 0.103, rail 0.041, subway 0.028, bike 0, walk 0, motorbike 0.103, ferry 0.115. Returns annual km, kg/tonnes CO2e and tree equivalents. Answers 'CO2 of my daily commute','car vs train commute footprint','annual emissions cycling to work','how much does carpooling save'.

Price$0.01per request

MethodPOST

Route/v1/calc/carbon-transit-commute

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

carboncommutetransittransportemissionsco2footprintmode

API URLhttps://x402.hexl.dev/v1/calc/carbon-transit-commute

Integration docs

Example request

{
  "oneWayKm": 15,
  "mode": "car"
}

Example response

{
  "oneWayKm": 15,
  "mode": "car",
  "daysPerWeek": 5,
  "weeksPerYear": 48,
  "emissionFactorKgPerKm": 0.171,
  "annualKm": 7200,
  "annualKgCO2e": 1231.2,
  "annualTonnesCO2e": 1.231,
  "equivalentTrees": 58.63
}

Input schema

{
  "type": "object",
  "required": [
    "oneWayKm"
  ],
  "properties": {
    "oneWayKm": {
      "type": "number",
      "examples": [
        15
      ]
    },
    "mode": {
      "type": "string",
      "enum": [
        "car",
        "carpool",
        "bus",
        "rail",
        "subway",
        "bike",
        "walk",
        "motorbike",
        "ferry"
      ],
      "default": "car"
    },
    "daysPerWeek": {
      "type": "number",
      "default": 5
    },
    "weeksPerYear": {
      "type": "number",
      "default": 48
    }
  }
}

Output schema

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