Freight shipping CO2 calculator API

Estimate freight CO2e via the tonne-km model: (weightKg/1000) x distanceKm x mode factor, using DEFRA freight factors (sea 0.016, rail 0.028, road 0.105, air 0.602 kg CO2e/tonne-km). Returns tonne-km, total kg/tonnes CO2e and tree equivalents. Answers 'CO2 to ship 1000kg by sea','air vs sea freight emissions','carbon of this shipment','tonne-km footprint of trucking'.

Price$0.01per request

MethodPOST

Route/v1/calc/carbon-shipping-emissions

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

carbonshippingfreightlogisticsemissionsco2tonne-kmsupply-chain

API URLhttps://x402.hexl.dev/v1/calc/carbon-shipping-emissions

Integration docs

Example request

{
  "weightKg": 1000,
  "distanceKm": 5000,
  "mode": "sea"
}

Example response

{
  "weightKg": 1000,
  "distanceKm": 5000,
  "mode": "sea",
  "emissionFactorKgPerTonneKm": 0.016,
  "tonneKm": 5000,
  "totalKgCO2e": 80,
  "totalTonnesCO2e": 0.08,
  "equivalentTrees": 3.81
}

Input schema

{
  "type": "object",
  "required": [
    "weightKg",
    "distanceKm"
  ],
  "properties": {
    "weightKg": {
      "type": "number",
      "examples": [
        1000
      ]
    },
    "distanceKm": {
      "type": "number",
      "examples": [
        5000
      ]
    },
    "mode": {
      "type": "string",
      "enum": [
        "sea",
        "rail",
        "road",
        "air"
      ],
      "default": "sea"
    }
  }
}

Output schema

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