.. title : Convertisseur décimal en hexadécimal en binaire
.. slug : décimal vers hexadécimal vers binaire
..date: 2025-12-26 15:00:00 UTC
.. tags : réseau, calculatrice, outil
.. catégorie : Calculatrices
.. lien :
.. description : Convertissez des nombres entre décimaux, hexadécimaux et binaires. Utilisé pour les masques de sous-réseau, les ID VLAN, les vidages hexadécimaux de paquets et l'interprétation des compteurs d'interface dans l'analyse du réseau.
.. tapez : texte
<style>
    .calc-container {
        max-width: 1000px;
        margin: 20px auto;
        padding: 20px;
    }

    .calc-header {
        margin-bottom: 30px;
        padding: 25px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        border-radius: 12px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        color: white;
    }

    .calc-header h2 {
        margin-top: 0;
        color: white;
        font-size: 28px;
        margin-bottom: 10px;
    }

    .calc-header p {
        margin: 10px 0;
        opacity: 0.95;
        font-size: 15px;
    }

    .input-row {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 15px;
        margin-top: 20px;
    }

    .input-group {
        display: flex;
        flex-direction: column;
    }

    .input-group label {
        margin-bottom: 8px;
        font-weight: 600;
        font-size: 14px;
    }

    .input-group input {
        padding: 14px;
        font-size: 16px;
        border: 2px solid rgba(255,255,255,0.3);
        border-radius: 6px;
        font-family: 'Courier New', monospace;
        background: rgba(255,255,255,0.95);
        transition: all 0.3s ease;
    }

    .input-group input:focus {
        outline: none;
        border-color: #4CAF50;
        background: white;
        box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
    }

    .button-container {
        margin-top: 20px;
        display: flex;
        gap: 10px;
    }

    .calc-button {
        padding: 14px 35px;
        font-size: 16px;
        background: #4CAF50;
        color: white;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        font-weight: bold;
        transition: all 0.3s ease;
        box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    }

    .calc-button:hover {
        background: #45a049;
        transform: translateY(-1px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    }

    .calc-button:active {
        background: #3d8b40;
        transform: translateY(0);
    }

    .calc-button.secondary {
        background: #666;
    }

    .calc-button.secondary:hover {
        background: #555;
    }

    .calc-button.secondary:active {
        background: #444;
    }

    .result-section {
        background: white;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        margin-bottom: 15px;
        overflow: hidden;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        transition: all 0.3s ease;
        display: none;
    }

    .result-section.show {
        display: block;
    }

    .result-section:hover {
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }

    .section-header {
        background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
        color: white;
        padding: 15px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .section-header h3 {
        margin: 0;
        font-size: 18px;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .section-header .icon {
        font-size: 20px;
    }

    .section-content {
        padding: 20px;
        background: #fafafa;
    }

    .data-row {
        display: flex;
        margin: 12px 0;
        padding: 10px;
        background: white;
        border-radius: 4px;
        border-left: 3px solid #4CAF50;
    }

    .data-label {
        font-weight: bold;
        color: #555;
        min-width: 180px;
        flex-shrink: 0;
    }

    .data-value {
        color: #333;
        font-family: 'Courier New', monospace;
        word-break: break-word;
        font-size: 15px;
    }

    .data-value.highlight {
        color: #4CAF50;
        font-weight: bold;
    }

    .help-text {
        margin-top: 15px;
        font-size: 14px;
        color: rgba(255,255,255,0.9);
        background: rgba(0,0,0,0.1);
        padding: 10px 15px;
        border-radius: 4px;
    }

    .help-text strong {
        color: white;
    }

    .error {
        background: #ffebee;
        color: #c62828;
        padding: 15px 20px;
        border-radius: 8px;
        border-left: 4px solid #c62828;
        margin: 20px 0;
        display: none;
    }

    .error.show {
        display: block;
    }

    .results-container {
        margin-top: 30px;
    }

    /* Responsive design */
    @media (max-width: 768px) {
        .input-row {
            grid-template-columns: 1fr;
        }

        .button-container {
            flex-direction: column;
        }

        .calc-button {
            width: 100%;
        }

        .data-row {
            flex-direction: column;
        }

        .data-label {
            margin-bottom: 5px;
            min-width: auto;
        }
    }
</style>
<div class="calc-container">
<div class="calc-header">
<h2>Convertisseur décimal-hexadécimal-binaire</h2>
<p>Convertissez les nombres entre les formats décimal, hexadécimal et binaire. Entrez une valeur dans n'importe quel format et cliquez sur Soumettre pour voir les conversions.</p>
<div class="input-row">
<div class="input-group">
<label for="decnum">Nombre décimal</label>
<input id="decnum" placeholder="e.g., 255" type="text" value=""/>
</div>
<div class="input-group">
<label for="hexnum">Nombre hexadécimal</label>
<input id="hexnum" placeholder="e.g., FF" type="text" value=""/>
</div>
<div class="input-group">
<label for="binnum">Nombre binaire</label>
<input id="binnum" placeholder="e.g., 11111111" type="text" value=""/>
</div>
</div>
<div class="button-container">
<button class="calc-button" onclick="hexdecbinFunction()" type="submit">Soumettre</button>
<button class="calc-button secondary" onclick="clearInputs()" type="button">Clair</button>
</div>
<div class="help-text">
<strong>Conseils:</strong>Entrez une valeur dans n'importe quel champ. Laissez les autres champs vides. Les résultats de la conversion s'afficheront ci-dessous.</div>
</div>
<div class="error" id="errorMessage"></div>
<div class="results-container">
<div class="result-section" id="resultFromDecimal">
<div class="section-header">
<h3><span class="icon">🔢</span>Converti à partir de décimal</h3>
</div>
<div class="section-content">
<div class="data-row">
<div class="data-label">Décimal:</div>
<div class="data-value highlight" id="decnumResultdec"></div>
</div>
<div class="data-row">
<div class="data-label">Hexadécimal:</div>
<div class="data-value" id="hexnumResultdec"></div>
</div>
<div class="data-row">
<div class="data-label">Binaire:</div>
<div class="data-value" id="binnumResultdec"></div>
</div>
</div>
</div>
<div class="result-section" id="resultFromHex">
<div class="section-header">
<h3><span class="icon">🔠</span>Converti à partir de l'hexadécimal</h3>
</div>
<div class="section-content">
<div class="data-row">
<div class="data-label">Hexadécimal:</div>
<div class="data-value highlight" id="hexnumResulthex"></div>
</div>
<div class="data-row">
<div class="data-label">Décimal:</div>
<div class="data-value" id="decnumResulthex"></div>
</div>
<div class="data-row">
<div class="data-label">Binaire:</div>
<div class="data-value" id="binnumResulthex"></div>
</div>
</div>
</div>
<div class="result-section" id="resultFromBinary">
<div class="section-header">
<h3><span class="icon">💾</span>Converti du binaire</h3>
</div>
<div class="section-content">
<div class="data-row">
<div class="data-label">Binaire:</div>
<div class="data-value highlight" id="binnumResultbin"></div>
</div>
<div class="data-row">
<div class="data-label">Décimal:</div>
<div class="data-value" id="decnumResultbin"></div>
</div>
<div class="data-row">
<div class="data-label">Hexadécimal:</div>
<div class="data-value" id="hexnumResultbin"></div>
</div>
</div>
</div>
</div>
</div>
<script>
function hexdecbinFunction() {
    // Set variables from input
    var hexnum = document.getElementById("hexnum").value.trim();
    var decnum = document.getElementById("decnum").value.trim();
    var binnum = document.getElementById("binnum").value.trim();

    // Hide all result sections first
    document.getElementById('resultFromDecimal').classList.remove('show');
    document.getElementById('resultFromHex').classList.remove('show');
    document.getElementById('resultFromBinary').classList.remove('show');
    document.getElementById('errorMessage').classList.remove('show');

    // Check if at least one input is provided
    if (!decnum && !hexnum && !binnum) {
        showError('Please enter a value in at least one field');
        return;
    }

    // Clear inputs after getting values
    document.getElementById("hexnum").value = "";
    document.getElementById("decnum").value = "";
    document.getElementById("binnum").value = "";

    try {
        // Input from Decimal
        if (decnum) {
            var decValue = parseInt(decnum, 10);
            if (isNaN(decValue)) {
                throw new Error('Invalid decimal number');
            }
            var hexStringdec = decValue.toString(16).toUpperCase();
            var binStringdec = decValue.toString(2);

            document.getElementById("decnumResultdec").innerHTML = decnum;
            document.getElementById("hexnumResultdec").innerHTML = hexStringdec;
            document.getElementById("binnumResultdec").innerHTML = binStringdec;
            document.getElementById('resultFromDecimal').classList.add('show');
        }

        // Input from Hex
        if (hexnum) {
            var decStringhex = parseInt(hexnum, 16);
            if (isNaN(decStringhex)) {
                throw new Error('Invalid hexadecimal number');
            }
            var binStringhex = decStringhex.toString(2);

            document.getElementById("hexnumResulthex").innerHTML = hexnum.toUpperCase();
            document.getElementById("decnumResulthex").innerHTML = decStringhex.toString(10);
            document.getElementById("binnumResulthex").innerHTML = binStringhex;
            document.getElementById('resultFromHex').classList.add('show');
        }

        // Input from Binary
        if (binnum) {
            var decStringbin = parseInt(binnum, 2);
            if (isNaN(decStringbin)) {
                throw new Error('Invalid binary number');
            }
            var hexStringbin = decStringbin.toString(16).toUpperCase();

            document.getElementById("binnumResultbin").innerHTML = binnum;
            document.getElementById("decnumResultbin").innerHTML = decStringbin.toString(10);
            document.getElementById("hexnumResultbin").innerHTML = hexStringbin;
            document.getElementById('resultFromBinary').classList.add('show');
        }

        // Scroll to results
        document.querySelector('.results-container').scrollIntoView({ behavior: 'smooth', block: 'start' });

    } catch (error) {
        showError(error.message);
    }
}

function clearInputs() {
    document.getElementById("hexnum").value = "";
    document.getElementById("decnum").value = "";
    document.getElementById("binnum").value = "";

    // Hide all result sections
    document.getElementById('resultFromDecimal').classList.remove('show');
    document.getElementById('resultFromHex').classList.remove('show');
    document.getElementById('resultFromBinary').classList.remove('show');
    document.getElementById('errorMessage').classList.remove('show');

    // Focus on first input
    document.getElementById("decnum").focus();
}

function showError(message) {
    const errorDiv = document.getElementById('errorMessage');
    errorDiv.textContent = message;
    errorDiv.classList.add('show');
    errorDiv.scrollIntoView({ behavior: 'smooth', block: 'center' });
}

// Add enter key support
document.addEventListener('DOMContentLoaded', function() {
    const inputs = ['decnum', 'hexnum', 'binnum'];

    inputs.forEach(function(inputId) {
        document.getElementById(inputId).addEventListener('keypress', function(e) {
            if (e.key === 'Enter') {
                hexdecbinFunction();
            }
        });
    });

    // Auto-focus first input field
    document.getElementById("decnum").focus();
});
</script>