diff --git a/assets/js/app.js b/assets/js/app.js
index dbd71e3..795f5fa 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -1398,6 +1398,7 @@ async function _loadConfigPage() {
     await _loadCategoriesConfigSection();
     await _loadSubcategoryConfigSection();
     await _loadRecipeTagsConfigSection();
+    await _loadCustomUnitsConfigSection();
 }
 
 async function _loadRecipeTagsConfigSection() {
@@ -1507,6 +1508,134 @@ async function removeRecipeTagConfig(key) {
     }
 }
 
+async function _loadCustomUnitsConfigSection() {
+    const container = document.getElementById('custom-units-list-container');
+    if (!container) return;
+    container.innerHTML = `<p class="settings-hint">Chargement…</p>`;
+    try {
+        const result = await api('custom_units_list', {}, 'GET');
+        if (!result.success) {
+            container.innerHTML = `<p class="settings-hint">Erreur de chargement.</p>`;
+            return;
+        }
+        CUSTOM_UNITS = result.units;
+        renderCustomUnitsConfigList(result.units);
+    } catch (e) {
+        container.innerHTML = `<p class="settings-hint">Erreur de chargement.</p>`;
+    }
+}
+
+function renderCustomUnitsConfigList(units) {
+    const container = document.getElementById('custom-units-list-container');
+    if (!container) return;
+    if (!units || units.length === 0) {
+        container.innerHTML = `<p class="settings-hint">Aucune unité personnalisée.</p>`;
+        return;
+    }
+    const baseOptionsHtml = (selected) => ['g', 'ml', 'pz'].map(b => `<option value="${b}" ${selected === b ? 'selected' : ''}>${b}</option>`).join('');
+    container.innerHTML = units.map(u => `
+        <div class="loc-row" style="display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--border,#e2e8f0);flex-wrap:wrap">
+            <input type="text" class="form-input" style="max-width:60px;text-align:center" value="${escapeHtml(u.icon)}" id="cunit-icon-${u.key}" maxlength="4">
+            <span class="settings-hint" style="min-width:50px">${escapeHtml(u.key)}</span>
+            <input type="text" class="form-input" style="flex:1;min-width:120px" value="${escapeHtml(u.label)}" id="cunit-label-${u.key}">
+            <select class="form-input" style="max-width:80px" id="cunit-base-${u.key}">${baseOptionsHtml(u.base_unit)}</select>
+            <input type="number" class="form-input" style="max-width:100px" value="${escapeHtml(String(u.factor))}" id="cunit-factor-${u.key}" min="0.001" step="any">
+            <button class="btn btn-small btn-primary" onclick="updateCustomUnitConfig('${u.key}')" title="Enregistrer">💾</button>
+            <button class="btn btn-small btn-secondary" onclick="removeCustomUnitConfig('${u.key}')" title="Supprimer">🗑️</button>
+        </div>
+    `).join('');
+}
+
+async function addCustomUnitConfig() {
+    const iconInput = document.getElementById('new-unit-icon');
+    const keyInput = document.getElementById('new-unit-key');
+    const labelInput = document.getElementById('new-unit-label');
+    const baseInput = document.getElementById('new-unit-base');
+    const factorInput = document.getElementById('new-unit-factor');
+    const icon = iconInput.value.trim() || '📏';
+    const key = keyInput.value.trim();
+    const label = labelInput.value.trim();
+    const base_unit = baseInput.value;
+    const factor = parseFloat(factorInput.value);
+
+    if (!key || !label) {
+        showToast('Indique une clé et un nom pour la nouvelle unité', 'warning');
+        return;
+    }
+    if (!factor || factor <= 0) {
+        showToast('Indique un facteur de conversion valide', 'warning');
+        return;
+    }
+
+    showLoading(true);
+    try {
+        const result = await api('custom_units_add', {}, 'POST', { key, label, icon, base_unit, factor });
+        showLoading(false);
+        if (result.success) {
+            showToast(`Unité "${label}" ajoutée`, 'success');
+            keyInput.value = '';
+            labelInput.value = '';
+            factorInput.value = '';
+            _loadCustomUnitsConfigSection();
+        } else {
+            showToast(result.error || 'Erreur lors de l\'ajout', 'error');
+        }
+    } catch (e) {
+        showLoading(false);
+        showToast('Erreur lors de l\'ajout', 'error');
+    }
+}
+
+async function updateCustomUnitConfig(key) {
+    const icon = document.getElementById(`cunit-icon-${key}`).value.trim() || '📏';
+    const label = document.getElementById(`cunit-label-${key}`).value.trim();
+    const base_unit = document.getElementById(`cunit-base-${key}`).value;
+    const factor = parseFloat(document.getElementById(`cunit-factor-${key}`).value);
+
+    if (!label) {
+        showToast('Le nom ne peut pas être vide', 'warning');
+        return;
+    }
+    if (!factor || factor <= 0) {
+        showToast('Facteur de conversion invalide', 'warning');
+        return;
+    }
+
+    showLoading(true);
+    try {
+        const result = await api('custom_units_update', {}, 'POST', { key, label, icon, base_unit, factor });
+        showLoading(false);
+        if (result.success) {
+            showToast('Unité mise à jour', 'success');
+            _loadCustomUnitsConfigSection();
+        } else {
+            showToast(result.error || 'Erreur', 'error');
+        }
+    } catch (e) {
+        showLoading(false);
+        showToast('Erreur', 'error');
+    }
+}
+
+async function removeCustomUnitConfig(key) {
+    if (!confirm(`Supprimer cette unité ?`)) return;
+
+    showLoading(true);
+    try {
+        const result = await api('custom_units_remove', {}, 'POST', { key });
+        showLoading(false);
+        if (result.success) {
+            showToast('Unité supprimée', 'success');
+            _loadCustomUnitsConfigSection();
+        } else {
+            showToast(result.error || 'Impossible de supprimer', 'error');
+        }
+    } catch (e) {
+        showLoading(false);
+        showToast('Erreur lors de la suppression', 'error');
+    }
+}
+
 async function _loadCategoriesConfigSection() {
     const container = document.getElementById('categories-list-container');
     if (!container) return;
@@ -15164,6 +15293,18 @@ async function loadRecipeTags() {
     }
 }
 
+let CUSTOM_UNITS = [];
+async function loadCustomUnits() {
+    try {
+        const result = await api('custom_units_list', {}, 'GET');
+        if (result.success && Array.isArray(result.units)) {
+            CUSTOM_UNITS = result.units;
+        }
+    } catch (e) {
+        console.warn('[EverShelf] Could not load custom units:', e);
+    }
+}
+
 let _recipeLibraryCache = [];
 
 async function loadRecipeLibrary() {
@@ -20508,6 +20649,7 @@ async function _initApp() {
 
     // Load recipe tags (used by the "Mes recettes" form and filter bar)
     await loadRecipeTags();
+    await loadCustomUnits();
     
     // Check for setup wizard resume (after language change)
     const resumeStep = localStorage.getItem('evershelf_setup_step');