{
    "name": "EV Battery Range Calculator",
    "url": "https://calculators.geekmidst.com/calculators/ev-battery-range-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/ev-battery-range-calculator.md",
    "category": "Energy & environment",
    "description": "Estimate an electric car’s remaining range from usable battery size, current charge, a reserve and its real consumption in kWh/100 km, Wh/km, Wh/mi or mi/kWh.",
    "summary": "Range is the usable energy left in the battery divided by the energy the car uses per kilometre. Use your real-world consumption, and adjust it for cold weather or motorway speeds.",
    "also_called": [
        "Electric car range calculator",
        "EV miles left 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": "capacity",
            "label": "Usable battery capacity",
            "type": "number",
            "default": "75",
            "unit": "kWh"
        },
        {
            "name": "soc",
            "label": "Current charge",
            "type": "number",
            "default": "90",
            "unit": "%"
        },
        {
            "name": "reserve",
            "label": "Reserve to keep",
            "type": "number",
            "default": "10",
            "unit": "%",
            "optional": true
        },
        {
            "name": "consumption",
            "label": "Energy use",
            "type": "number",
            "default": "16"
        },
        {
            "name": "consumption_unit",
            "label": "Energy use unit",
            "type": "select",
            "default": "kwh100km",
            "options": {
                "kwh100km": "kWh per 100 km",
                "whkm": "Wh per km",
                "whmi": "Wh per mile",
                "mikwh": "Miles per kWh"
            }
        },
        {
            "name": "adjust",
            "label": "Conditions adjustment",
            "type": "number",
            "default": "0",
            "unit": "%",
            "optional": true
        }
    ],
    "outputs": [
        {
            "key": "range_km",
            "label": "Estimated range",
            "format": "number"
        },
        {
            "key": "range_mi",
            "label": "Estimated range in miles",
            "format": "number"
        },
        {
            "key": "usable_kwh",
            "label": "Energy available above the reserve",
            "format": "number"
        },
        {
            "key": "kwh_per_100km",
            "label": "Consumption used",
            "format": "number"
        }
    ],
    "formula": {
        "text": "Energy = Capacity × (Charge% − Reserve%);  Range (km) = Energy ÷ (kWh per km × (1 + Adjustment%));  miles = km ÷ 1.609344",
        "variables": {
            "Capacity": "usable battery capacity",
            "kWh per km": "consumption converted from the chosen unit (1 mile = 1.609344 km)"
        }
    },
    "worked_example": {
        "inputs": {
            "capacity": "75",
            "soc": "90",
            "reserve": "10",
            "consumption": "16",
            "consumption_unit": "kwh100km",
            "adjust": "0"
        },
        "steps": [
            "Energy above the reserve = 75 × (90% − 10%) = 60 kWh.",
            "Range = 60 ÷ 0.16 kWh/km = 375 km.",
            "In miles: 375 ÷ 1.609344 = 233.01 mi."
        ],
        "result": "A 75 kWh car at 90%, keeping a 10% reserve and using 16 kWh/100 km, has about 375 km (233 miles) of range."
    },
    "interpretation": "Range scales directly with consumption, so a 20% rise in consumption cuts range by about a sixth. Plan long trips around your worst-case consumption, not the average.",
    "assumptions": [
        "Consumption stays at the entered average for the whole distance."
    ],
    "limitations": [
        "Terrain, wind, speed, temperature and cabin heating can change consumption a lot; the adjustment is your estimate, not a model."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Why is my range lower than the official figure?",
            "answer": "Official test cycles are gentler than many real journeys. Motorway speeds and cold weather raise consumption."
        },
        {
            "question": "How do I convert mi/kWh to kWh/100 km?",
            "answer": "kWh/100 km = 100 ÷ (mi/kWh × 1.609344). For 4 mi/kWh that is about 15.5 kWh/100 km."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "EV Charging Time Calculator",
            "url": "https://calculators.geekmidst.com/calculators/ev-charging-duration-calculator"
        },
        {
            "name": "EV Charging Cost Calculator",
            "url": "https://calculators.geekmidst.com/calculators/ev-charging-cost-calculator"
        },
        {
            "name": "Length Converter",
            "url": "https://calculators.geekmidst.com/calculators/length-converter"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}