{
    "name": "Fleet Carbon Emissions Calculator",
    "url": "https://calculators.geekmidst.com/calculators/fleet-carbon-emissions-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/fleet-carbon-emissions-calculator.md",
    "category": "Logistics & transport",
    "description": "Estimate a fleet’s annual CO₂e from vehicles, distance, fuel consumption and an emission factor, with grams per km and per tonne-km for reporting.",
    "summary": "Fuel-based emissions are litres burned times an emission factor per litre. Enter the factor your reporting framework publishes for your fuel to get annual tonnes and intensity figures.",
    "also_called": [
        "Fleet CO2 calculator",
        "Vehicle fleet emissions calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "vehicles",
            "label": "Number of vehicles",
            "type": "number",
            "default": "10"
        },
        {
            "name": "km",
            "label": "Distance per vehicle per year",
            "type": "number",
            "default": "100000",
            "unit": "km"
        },
        {
            "name": "consumption",
            "label": "Average fuel consumption",
            "type": "number",
            "default": "30",
            "unit": "L/100 km"
        },
        {
            "name": "factor",
            "label": "Emission factor",
            "type": "number",
            "default": "2.6",
            "unit": "kg CO₂e/L"
        },
        {
            "name": "payload",
            "label": "Average payload carried",
            "type": "number",
            "default": "12",
            "unit": "t"
        }
    ],
    "outputs": [
        {
            "key": "tonnes",
            "label": "Fleet emissions per year",
            "format": "number"
        },
        {
            "key": "per_vehicle",
            "label": "Per vehicle per year",
            "format": "number"
        },
        {
            "key": "fuel_litres",
            "label": "Fuel used per year",
            "format": "number"
        },
        {
            "key": "g_per_km",
            "label": "Emissions per vehicle-km",
            "format": "number"
        },
        {
            "key": "g_per_tkm",
            "label": "Emissions per tonne-km",
            "format": "number"
        }
    ],
    "formula": {
        "text": "Fuel = Vehicles × km × L/100 km ÷ 100;  CO₂e = Fuel × Factor;  g/km = L/100 km ÷ 100 × Factor × 1000;  g/tkm = g/km ÷ Payload",
        "variables": {
            "Factor": "kg CO₂e emitted per litre of fuel burned",
            "Payload": "average tonnes carried per km, including empty running"
        }
    },
    "worked_example": {
        "inputs": {
            "vehicles": "10",
            "km": "100000",
            "consumption": "30",
            "factor": "2.6",
            "payload": "12"
        },
        "steps": [
            "Fuel = 10 × 100,000 × 30 ÷ 100 = 300,000 L.",
            "Emissions = 300,000 × 2.6 = 780,000 kg = 780 t CO₂e (78 t per truck).",
            "Per km = 0.30 L × 2.6 = 0.78 kg = 780 g; per tonne-km = 780 ÷ 12 = 65 g."
        ],
        "result": "Ten trucks running 100,000 km a year at 30 L/100 km emit about 780 t CO₂e with a 2.6 kg/L factor."
    },
    "interpretation": "Tonne-km intensity lets you compare routes and vehicle types fairly. Reducing empty running raises the average payload and lowers g/tkm even if total fuel is unchanged.",
    "assumptions": [
        "Every vehicle has the same distance and consumption; for a mixed fleet, run each vehicle class separately and add the results."
    ],
    "limitations": [
        "The result is only as accurate as the emission factor; factors differ by fuel blend, country and whether they include upstream (well-to-tank) emissions.",
        "Refrigerant leakage and reefer-unit fuel are not included unless added to the consumption."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Where do I get an emission factor?",
            "answer": "Use the factor set your reporting framework requires, such as your national government’s published greenhouse-gas conversion factors. Check whether it is tank-to-wheel or well-to-wheel."
        },
        {
            "question": "Should I use fuel or distance data?",
            "answer": "Fuel purchase records are more accurate than distance × average consumption. If you have total litres, enter 100 km per vehicle and set consumption to litres per vehicle."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Refrigerated Truck Fuel Calculator",
            "url": "https://calculators.geekmidst.com/calculators/refrigerated-truck-fuel-calculator"
        },
        {
            "name": "Fuel Cost Calculator",
            "url": "https://calculators.geekmidst.com/calculators/fuel-cost-calculator"
        },
        {
            "name": "Gas Mileage Calculator",
            "url": "https://calculators.geekmidst.com/calculators/gas-mileage-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}