Co2 Calculator

Need to calculate Co2? Use this free Co2 Calculator in your browser. It works on phone, tablet and computer.

How to use the Co2 Calculator

Fill in the fields, such as “Vehicle Type”, “Distance Travelled (km)”, “Electricity Usage (kWh)”, “Natural Gas Usage (cubic meters)”.
Click “Calculate CO₂ Footprint”.
Your result shows on the page.

Why use this Co2 Calculator?

The Co2 Calculator is handy for school, work and everyday decisions. It is free, easy to use and works on any device.

Try different values as often as you like
Skip manual maths and avoid simple mistakes
Get a result as soon as you enter your numbers

Co2 Calculator – frequently asked questions

Is the Co2 Calculator free to use?

Yes. The Co2 Calculator on Ilmhunt is free to use, and you do not need to create an account.

Do I need to install anything?

No installation is needed. Open this page and use the tool right away.

Is my data safe when I use the Co2 Calculator?

The tool runs in your browser, so what you enter is processed on your own device and is not sent to our servers.

How accurate is the Co2 Calculator?

It follows standard formulas and shows the result on the page. For important choices, such as money, health or exams, please double-check the result with an official source or a professional.

More free Calculators

Browse all Calculators on Ilmhunt, or see all free online tools.

Embed this tool on your website — free

Copy the code below to add this working tool to your own page. A small credit link stays with it — that’s all we ask.

<iframe srcdoc="&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;en&quot;&gt;
&lt;head&gt;
    &lt;meta charset=&quot;UTF-8&quot;&gt;
    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
    &lt;title&gt;Advanced CO₂ Calculator&lt;/title&gt;
    &lt;style&gt;
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            margin: 20px;
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            margin-bottom: 20px;
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        label {
            display: block;
            margin: 10px 0 5px;
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        }
        input, select {
            width: 100%;
            padding: 10px;
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            border-radius: 5px;
        }
        button {
            padding: 10px 20px;
            font-size: 16px;
            border: none;
            border-radius: 5px;
            background-color: #28a745;
            color: white;
            cursor: pointer;
        }
        button:hover {
            background-color: #218838;
        }
        .results {
            margin-top: 20px;
            padding: 15px;
            background-color: #f8f9fa;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .results p {
            font-size: 18px;
            margin: 5px 0;
        }
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&lt;/head&gt;
&lt;body&gt;
    &lt;div class=&quot;container&quot;&gt;
        &lt;h1&gt;Advanced CO₂ Calculator&lt;/h1&gt;
        
        &lt;div class=&quot;section&quot; id=&quot;transportation&quot;&gt;
            &lt;h2&gt;Transportation&lt;/h2&gt;
            &lt;label for=&quot;vehicleType&quot;&gt;Vehicle Type&lt;/label&gt;
            &lt;select id=&quot;vehicleType&quot;&gt;
                &lt;option value=&quot;car&quot;&gt;Car&lt;/option&gt;
                &lt;option value=&quot;motorbike&quot;&gt;Motorbike&lt;/option&gt;
                &lt;option value=&quot;public_transport&quot;&gt;Public Transport&lt;/option&gt;
                &lt;option value=&quot;bicycle&quot;&gt;Bicycle&lt;/option&gt;
                &lt;option value=&quot;walking&quot;&gt;Walking&lt;/option&gt;
            &lt;/select&gt;

            &lt;label for=&quot;distance&quot;&gt;Distance Travelled (km)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;distance&quot; placeholder=&quot;Enter distance in kilometers&quot;&gt;
        &lt;/div&gt;

        &lt;div class=&quot;section&quot; id=&quot;energy&quot;&gt;
            &lt;h2&gt;Energy Usage&lt;/h2&gt;
            &lt;label for=&quot;electricity&quot;&gt;Electricity Usage (kWh)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;electricity&quot; placeholder=&quot;Enter electricity consumption&quot;&gt;

            &lt;label for=&quot;gas&quot;&gt;Natural Gas Usage (cubic meters)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;gas&quot; placeholder=&quot;Enter gas consumption&quot;&gt;

            &lt;label for=&quot;heatingOil&quot;&gt;Heating Oil Usage (liters)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;heatingOil&quot; placeholder=&quot;Enter heating oil consumption&quot;&gt;
        &lt;/div&gt;

        &lt;div class=&quot;section&quot; id=&quot;food&quot;&gt;
            &lt;h2&gt;Food Consumption&lt;/h2&gt;
            &lt;label for=&quot;meat&quot;&gt;Meat Consumption (kg)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;meat&quot; placeholder=&quot;Enter amount of meat consumed&quot;&gt;

            &lt;label for=&quot;dairy&quot;&gt;Dairy Consumption (kg)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;dairy&quot; placeholder=&quot;Enter amount of dairy consumed&quot;&gt;

            &lt;label for=&quot;fruits&quot;&gt;Fruits and Vegetables Consumption (kg)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;fruits&quot; placeholder=&quot;Enter amount of fruits and vegetables consumed&quot;&gt;
        &lt;/div&gt;

        &lt;div class=&quot;section&quot; id=&quot;waste&quot;&gt;
            &lt;h2&gt;Waste Management&lt;/h2&gt;
            &lt;label for=&quot;recycled&quot;&gt;Recycled Waste (kg)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;recycled&quot; placeholder=&quot;Enter amount of recycled waste&quot;&gt;

            &lt;label for=&quot;nonRecycled&quot;&gt;Non-Recycled Waste (kg)&lt;/label&gt;
            &lt;input type=&quot;number&quot; id=&quot;nonRecycled&quot; placeholder=&quot;Enter amount of non-recycled waste&quot;&gt;
        &lt;/div&gt;

        &lt;button onclick=&quot;calculateCO2()&quot;&gt;Calculate CO₂ Footprint&lt;/button&gt;

        &lt;div class=&quot;results&quot; id=&quot;results&quot; style=&quot;display: none;&quot;&gt;
            &lt;h2&gt;Your CO₂ Footprint&lt;/h2&gt;
            &lt;p id=&quot;transportationResult&quot;&gt;&lt;/p&gt;
            &lt;p id=&quot;energyResult&quot;&gt;&lt;/p&gt;
            &lt;p id=&quot;foodResult&quot;&gt;&lt;/p&gt;
            &lt;p id=&quot;wasteResult&quot;&gt;&lt;/p&gt;
            &lt;p id=&quot;totalCO2&quot;&gt;&lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;

    &lt;script&gt;
        function calculateCO2() {
            const resultsDiv = document.getElementById('results');
            const transportationResult = document.getElementById('transportationResult');
            const energyResult = document.getElementById('energyResult');
            const foodResult = document.getElementById('foodResult');
            const wasteResult = document.getElementById('wasteResult');
            const totalCO2 = document.getElementById('totalCO2');

            // Transportation
            const vehicleType = document.getElementById('vehicleType').value;
            const distance = parseFloat(document.getElementById('distance').value) || 0;
            let transportCO2 = 0;
            if (vehicleType === 'car') transportCO2 = distance * 0.2;
            else if (vehicleType === 'motorbike') transportCO2 = distance * 0.1;
            else if (vehicleType === 'public_transport') transportCO2 = distance * 0.05;

            transportationResult.textContent = `Transportation: ${transportCO2.toFixed(2)} kg CO₂`;

            // Energy
            const electricity = parseFloat(document.getElementById('electricity').value) || 0;
            const gas = parseFloat(document.getElementById('gas').value) || 0;
            const heatingOil = parseFloat(document.getElementById('heatingOil').value) || 0;
            const energyCO2 = electricity * 0.5 + gas * 2 + heatingOil * 2.5;

            energyResult.textContent = `Energy Usage: ${energyCO2.toFixed(2)} kg CO₂`;

            // Food
            const meat = parseFloat(document.getElementById('meat').value) || 0;
            const dairy = parseFloat(document.getElementById('dairy').value) || 0;
            const fruits = parseFloat(document.getElementById('fruits').value) || 0;
            const foodCO2 = meat * 27 + dairy * 13 + fruits * 2;

            foodResult.textContent = `Food Consumption: ${foodCO2.toFixed(2)} kg CO₂`;

            // Waste
            const recycled = parseFloat(document.getElementById('recycled').value) || 0;
            const nonRecycled = parseFloat(document.getElementById('nonRecycled').value) || 0;
            const wasteCO2 = nonRecycled * 1.5;

            wasteResult.textContent = `Waste Management: ${wasteCO2.toFixed(2)} kg CO₂`;

            // Total
            const total = transportCO2 + energyCO2 + foodCO2 + wasteCO2;
            totalCO2.textContent = `Total CO₂ Footprint: ${total.toFixed(2)} kg CO₂`;

            resultsDiv.style.display = 'block';
        }
    &lt;/script&gt;
&lt;style&gt;html,body{height:auto!important;min-height:0!important;max-height:none!important}&lt;/style&gt;&lt;script&gt;(function(){function wpcPost(){try{parent.postMessage({wpcId:142,wpcH:document.body.scrollHeight},'*');}catch(e){}}window.addEventListener('load',wpcPost);try{new MutationObserver(wpcPost).observe(document.body,{childList:true,subtree:true,attributes:true});}catch(e){}window.addEventListener('resize',wpcPost);setInterval(wpcPost,600);})();&lt;/script&gt;&lt;/body&gt;
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<p><a href="https://ilmhunt.com/co2-calculator/" target="_blank" rel="noopener">Co2 Calculator</a> by <a href="https://ilmhunt.com/" target="_blank" rel="noopener">IlmHunt</a> — free online tools</p>