{"id":8810,"date":"2026-08-05T14:01:25","date_gmt":"2026-08-05T12:01:25","guid":{"rendered":"https:\/\/www.lukaswojcik.com\/blog\/?page_id=8810"},"modified":"2026-08-05T15:36:34","modified_gmt":"2026-08-05T13:36:34","slug":"unifi-poe-power-budget-load-calculator","status":"publish","type":"page","link":"https:\/\/www.lukaswojcik.com\/blog\/en\/toolbox\/unifi-poe-power-budget-load-calculator\/","title":{"rendered":"UniFi PoE Power Budget &#038; Load Calculator"},"content":{"rendered":"<div class=\"gtm-analyser-container\" style=\"background: var(--bg-panel, #1e1e24); padding: 25px; border-radius: 8px; border: 1px solid var(--border, #2a2a35);\">\n<p style=\"color: var(--text-secondary); margin-bottom: 20px;\">\n        Calculate total power draw across PoE (802.3af), PoE+ (802.3at), and PoE++ (802.3bt) hardware against switch capacity.\n    <\/p>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 15px; margin-bottom: 20px;\">\n<div>\n            <label style=\"color: var(--text-secondary); display: block; font-size: 0.85rem;\">802.3af (15.4W max):<\/label><br \/>\n            <input type=\"number\" id=\"poe-af\" value=\"3\" min=\"0\" style=\"width: 100%; padding: 10px; background: var(--bg-body); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px;\">\n        <\/div>\n<div>\n            <label style=\"color: var(--text-secondary); display: block; font-size: 0.85rem;\">802.3at (30W max):<\/label><br \/>\n            <input type=\"number\" id=\"poe-at\" value=\"2\" min=\"0\" style=\"width: 100%; padding: 10px; background: var(--bg-body); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px;\">\n        <\/div>\n<div>\n            <label style=\"color: var(--text-secondary); display: block; font-size: 0.85rem;\">802.3bt (60W max):<\/label><br \/>\n            <input type=\"number\" id=\"poe-bt\" value=\"0\" min=\"0\" style=\"width: 100%; padding: 10px; background: var(--bg-body); border: 1px solid var(--border); color: var(--text-primary); border-radius: 6px;\">\n        <\/div>\n<div>\n            <label style=\"color: var(--text-secondary); display: block; font-size: 0.85rem;\">Switch PoE Budget (W):<\/label><br \/>\n            <input type=\"number\" id=\"poe-budget\" value=\"120\" min=\"10\" style=\"width: 100%; padding: 10px; background: var(--bg-body); border: 1px solid var(--border); color: var(--accent); border-radius: 6px;\">\n        <\/div>\n<\/p><\/div>\n<p>    <button id=\"calc-poe-btn\" class=\"button\" style=\"background: var(--accent, #2ba6df); color: #0b1114; border: none; padding: 12px 24px; border-radius: 6px; font-weight: 700; cursor: pointer; margin-bottom: 20px;\">Calculate Power Budget<\/button><\/p>\n<div id=\"poe-results\"><\/div>\n<\/div>\n<p><script>\ndocument.getElementById(\"calc-poe-btn\").addEventListener(\"click\", () => {\n    const afCount = parseInt(document.getElementById(\"poe-af\").value, 10) || 0;\n    const atCount = parseInt(document.getElementById(\"poe-at\").value, 10) || 0;\n    const btCount = parseInt(document.getElementById(\"poe-bt\").value, 10) || 0;\n    const budget = parseFloat(document.getElementById(\"poe-budget\").value) || 120;<\/p>\n<p>    const afWatts = afCount * 15.4;\n    const atWatts = atCount * 30.0;\n    const btWatts = btCount * 60.0;\n    const totalWatts = afWatts + atWatts + btWatts;<\/p>\n<p>    const percentage = Math.min(Math.round((totalWatts \/ budget) * 100), 100);\n    const isOverload = totalWatts > budget;\n    const barColor = isOverload ? \"#ff6b6b\" : (percentage > 80 ? \"#fcc419\" : \"#51cf66\");<\/p>\n<p>    document.getElementById(\"poe-results\").innerHTML = [\n        \"<\/p>\n<div style='background:var(--bg-body); padding:15px; border-radius:6px; border:1px solid var(--border); margin-bottom:15px;'>\",\n        \"  <\/p>\n<div style='display:flex; justify-content:space-between; margin-bottom:8px;'>\",\n        \"    <span style='color:var(--text-secondary);'>Budget Utilization: <strong style='color:var(--text-primary);'>\" + percentage + \"%<\/strong><\/span>\",\n        \"    <span style='color:\" + barColor + \"; font-weight:bold;'>\" + (isOverload ? \"OVERLOAD DETECTED\" : \"BUDGET STABLE\") + \"<\/span>\",\n        \"  <\/div>\n<p>\",\n        \"  <\/p>\n<div style='width:100%; height:10px; background:#242b30; border-radius:5px; overflow:hidden;'>\",\n        \"    <\/p>\n<div style='width:\" + percentage + \"%; height:100%; background:\" + barColor + \"; transition:width 0.3s;'><\/div>\n<p>\",\n        \"  <\/p><\/div>\n<p>\",\n        \"<\/p><\/div>\n<p>\",\n        \"<\/p>\n<div style='display:grid; grid-template-columns:repeat(auto-fit, minmax(180px, 1fr)); gap:12px;'>\",\n        \"  <\/p>\n<div style='background:var(--bg-body); padding:15px; border-radius:6px; border:1px solid var(--border);'>\",\n        \"    <span style='color:var(--text-secondary); font-size:0.85rem; display:block;'>Total Power Draw<\/span>\",\n        \"    <strong style='color:var(--text-primary); font-size:1.2rem;'>\" + totalWatts.toFixed(1) + \" W<\/strong>\",\n        \"  <\/div>\n<p>\",\n        \"  <\/p>\n<div style='background:var(--bg-body); padding:15px; border-radius:6px; border:1px solid var(--border);'>\",\n        \"    <span style='color:var(--text-secondary); font-size:0.85rem; display:block;'>Remaining Switch Budget<\/span>\",\n        \"    <strong style='color:\" + barColor + \"; font-size:1.2rem;'>\" + Math.max(0, budget - totalWatts).toFixed(1) + \" W<\/strong>\",\n        \"  <\/div>\n<p>\",\n        \"<\/p><\/div>\n<p>\"\n    ].join(\"\");\n});\ndocument.getElementById(\"calc-poe-btn\").click();\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Calculate total power draw across PoE hardware and verify switch capacity saturation for UniFi deployments.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":38,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-tool-base.php","meta":{"footnotes":""},"class_list":["post-8810","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>UniFi PoE Power Budget &amp; 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