{"id":100228,"date":"2026-02-15T20:28:26","date_gmt":"2026-02-15T20:28:26","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100228"},"modified":"2026-03-05T15:42:31","modified_gmt":"2026-03-05T15:42:31","slug":"sling-capacity-angle","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/sling-capacity-angle\/","title":{"rendered":"Kalkulator for slyngekapasitet i vinkel | Gratis WLL-verkt\u00f8y"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Sling Capacity at Angle Calculator\",\"description\":\"Calculate effective sling capacity at various angles.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/sling-capacity-angle\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How does sling angle affect capacity?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"As the sling angle from vertical increases, the effective load capacity decreases. At 60\u00b0 from vertical, capacity is only 50% of the rated WLL.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the minimum safe sling angle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Never use slings at angles greater than 60\u00b0 from vertical. Below this the sling tension increases dramatically and may exceed the rated capacity.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I calculate load per sling leg?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For symmetric lifts: load per leg = total load \/ (number of legs \u00d7 cos(angle)). The angle factor accounts for the cosine reduction.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between WLL and SWL?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"WLL (Working Load Limit) has replaced SWL (Safe Working Load) in modern standards. Both represent the maximum load a sling should carry in normal use.\"}},\n{\"@type\":\"Question\",\"name\":\"Do all sling legs share the load equally?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only for symmetric lifts with equal leg lengths and angles. In practice, assume only 2 of 4 legs carry the load unless all legs are demonstrably equal.\"}}\n]}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Sling Capacity at Angle\",\"item\":\"https:\/\/vibromera.eu\/calculators\/sling-capacity-angle\/\"}]}<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link 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16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}.vc-viz{margin:20px 0;background:var(--vc-surface);border:1px solid var(--vc-border-light);border-radius:var(--vc-radius);padding:16px;overflow:hidden}.vc-viz svg{width:100%;height:auto;display:block}.vc-viz-title{font-family:var(--vc-mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--vc-ink-muted);margin-bottom:12px}@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}<\/style>\n\n<div class=\"vc-calculator\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool #217<\/p>\n    <h1 class=\"vc-header-title\">Sling Capacity at Angle Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Calculate the effective working load limit (WLL) of a sling at various angles from vertical. Supports 1\u20134 leg slings.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">WLL \u00d7 cos(\u03b8)<\/span><span class=\"vc-badge\">1\u20134 Legs<\/span><span class=\"vc-badge\">Rigging<\/span><\/div>\n<\/header>\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-wll\">Single Leg WLL <span class=\"vc-label-hint\">(tonnes)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-wll\" step=\"any\" min=\"0.01\" placeholder=\"e.g. 2\" value=\"2\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-legs\">Number of Legs<\/label>\n                <select class=\"vc-select\" id=\"vc-legs\"><option value=\"1\">1 leg (straight)<\/option><option value=\"2\" selected>2 legs<\/option><option value=\"3\">3 legs<\/option><option value=\"4\">4 legs (use 3-leg factor)<\/option><\/select><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-angle\">Angle from Vertical <span class=\"vc-label-hint\">(degrees)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-angle\" step=\"any\" min=\"0\" max=\"60\" placeholder=\"e.g. 45\" value=\"45\"><\/div>\n        <\/div>\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-w=\"2\" data-l=\"2\" data-a=\"0\">2t WLL, 2-leg, 0\u00b0 (vertical)<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-w=\"2\" data-l=\"2\" data-a=\"30\">2t WLL, 2-leg, 30\u00b0<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-w=\"2\" data-l=\"2\" data-a=\"45\">2t WLL, 2-leg, 45\u00b0<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-w=\"5\" data-l=\"4\" data-a=\"45\">5t WLL, 4-leg, 45\u00b0<\/button>\n        <\/div>\n    <\/form>\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy<\/button><\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Effective WLL (assembly)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-eff\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Angle Factor<\/div><div class=\"vc-rcard-value\" id=\"vc-r-factor\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Tension per Leg<\/div><div class=\"vc-rcard-value\" id=\"vc-r-tension\">\u2014<\/div><\/div>\n        <\/div>\n        <div class=\"vc-viz\" id=\"vc-viz\"><div class=\"vc-viz-title\">Sling Configuration<\/div><svg id=\"vc-viz-svg\" viewBox=\"0 0 400 300\"><\/svg><\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Angle Factors<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\">\n        <h3>Sling Angle Factor<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n        <table class=\"vc-table\">\n            <thead><tr><th>Angle from vertical<\/th><th>Factor (cos \u03b8)<\/th><th>% of WLL<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>0\u00b0<\/td><td>1.00<\/td><td>100%<\/td><\/tr>\n                <tr><td>15\u00b0<\/td><td>0.97<\/td><td>97%<\/td><\/tr>\n                <tr><td>30\u00b0<\/td><td>0.87<\/td><td>87%<\/td><\/tr>\n                <tr><td>45\u00b0<\/td><td>0.71<\/td><td>71%<\/td><\/tr>\n                <tr><td>60\u00b0<\/td><td>0.50<\/td><td>50%<\/td><\/tr>\n            <\/tbody>\n        <\/table>\n        <div class=\"vc-warning-box\"><p style=\"margin:0;font-size:14px;color:var(--vc-ink-secondary)\"><strong>\u26a0\ufe0f Warning:<\/strong> Never use slings at angles greater than 60\u00b0 from vertical. For 4-leg slings, use the 3-leg factor (assume one leg carries no load) unless all legs are verified to share load equally.<\/p><\/div>\n    <\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\"><a class=\"vc-related-link\" href=\"\/calculators\/eyebolt-load-iso3266\/\">Eyebolt Load (ISO 3266)<\/a><a class=\"vc-related-link\" href=\"\/calculators\/wire-rope-capacity\/\">Wire Rope Capacity<\/a><a class=\"vc-related-link\" href=\"\/calculators\/center-of-gravity-calculator\/\">Center of Gravity<\/a><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional instruments for industrial applications.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p><div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div><\/footer>\n<\/div>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n))return'\u2014';return n.toFixed(d===undefined?2:d)}\n    function calculate(){\n        var wll=parseFloat($('vc-wll').value),legs=parseInt($('vc-legs').value),angle=parseFloat($('vc-angle').value);\n        if(!wll||wll<=0||isNaN(angle)||angle<0||angle>60){$('vc-results').classList.remove('vc-visible');return}\n        var rad=angle*Math.PI\/180;var factor=Math.cos(rad);\n        var effLegs=legs>=4?3:legs;\n        var effWLL=wll*effLegs*factor;\n        var tensionPerLeg=wll;\n        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At 60\u00b0 from vertical, capacity is only 50% of rated WLL.<\/p>'},\n        {q:'What is the minimum safe sling angle?',a:'<p>Never use slings at angles greater than 60\u00b0 from vertical. The sling tension increases dramatically beyond this.<\/p>'},\n        {q:'How do I calculate load per sling leg?',a:'<p>For symmetric lifts: load per leg = total load \/ (number of legs \u00d7 cos(angle)).<\/p>'},\n        {q:'What is the difference between WLL and SWL?',a:'<p>WLL (Working Load Limit) has replaced SWL (Safe Working Load) in modern standards. Both represent maximum load for normal use.<\/p>'},\n        {q:'Do all sling legs share the load equally?',a:'<p>Only for symmetric lifts. For 4-leg slings, assume only 3 legs carry load unless verified equal.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});\n    function renderFormulas(){try{katex.render('\\\\text{WLL}_{eff} = \\\\text{WLL}_{leg} \\\\times n_{legs} \\\\times \\\\cos(\\\\theta)',$('vc-katex-1'),{displayMode:true,throwOnError:false})}catch(e){}}\n    function init(){renderFormulas();calculate()}\n    if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',init);else init();\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Gratis kalkulator for slyngelast. Bestem effektiv WLL ved slyngevinkler for 1-4-bens slynger. Faktor: 0\u00b0=1,0, 30\u00b0=0,87, 45\u00b0=0,71, 60\u00b0=0,50.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100228","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100228\/revisions"}],"predecessor-version":[{"id":100772,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100228\/revisions\/100772"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}