{"version":"1.0","provider_name":"eLearnSmart","provider_url":"https:\/\/elearnsmart.com\/blog","author_name":"elearnsmart.com","author_url":"https:\/\/elearnsmart.com\/blog\/author\/elearnsmart-com\/","title":"15+ Free Health & Fitness Calculators: Track BMI, Body Fat & More","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Gag5eB6tkY\"><a href=\"https:\/\/elearnsmart.com\/blog\/15-plus-free-health-and-fitness-calculators\/\">15+ Free Health &#038; Fitness Calculators: Track BMI, Body Fat &#038; More<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/elearnsmart.com\/blog\/15-plus-free-health-and-fitness-calculators\/embed\/#?secret=Gag5eB6tkY\" width=\"600\" height=\"338\" title=\"&#8220;15+ Free Health &#038; Fitness Calculators: Track BMI, Body Fat &#038; More&#8221; &#8212; eLearnSmart\" data-secret=\"Gag5eB6tkY\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/elearnsmart.com\/blog\/wp-content\/uploads\/2025\/10\/modern-vector-illustration-featuring-abstract-heal-1761812538684.png","thumbnail_width":1024,"thumbnail_height":1024,"description":"Health &#038; fitness calculators are free online tools designed to help you track and measure various aspects of your physical well-being. They can instantly compute key metrics like your Body Mass Index (BMI), body fat percentage, Basal Metabolic Rate (BMR), and daily macro needs to support your diet and fitness goals. eLearnSmart offers a comprehensive [&hellip;]"}