{"id":4717,"date":"2026-05-09T10:04:06","date_gmt":"2026-05-09T10:04:06","guid":{"rendered":"https:\/\/rimanagency.com\/date-difference-calculator-days-weeks-months\/"},"modified":"2026-05-09T10:04:06","modified_gmt":"2026-05-09T10:04:06","slug":"date-difference-calculator-days-weeks-months","status":"publish","type":"page","link":"https:\/\/rimanagency.com\/fr\/date-difference-calculator-days-weeks-months\/","title":{"rendered":"Calculateur de diff\u00e9rence de dates \u2014 Jours, semaines, mois"},"content":{"rendered":"<style>.rt-h{background:linear-gradient(135deg,#f1f5e8,#e8efdb);border-radius:14px;padding:32px;margin:0 0 24px;text-align:center}.rt-h h1{margin:0 0 10px;font-size:28px;color:#4a6320}.rt-g{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:0 0 24px}.rt-f,.rt-o{background:#fff;border:1px solid #e0e6d8;border-radius:10px;padding:22px}.rt-f h3,.rt-o h3{margin:0 0 14px;color:#4a6320;font-size:18px}.rt-f label{display:block;font-size:13px;color:#516048;font-weight:600;margin:10px 0 6px}.rt-f input,.rt-f select,.rt-f textarea{width:100%;padding:9px;border:1px solid #d4dac6;border-radius:6px;font-size:14px;box-sizing:border-box;font-family:inherit}.rt-btn{background:#719430;color:#fff;border:none;padding:11px 20px;border-radius:6px;font-weight:700;cursor:pointer;width:100%;margin-top:14px;font-size:15px}.rt-btn:hover{background:#4a6320}.rt-o-big{font-size:38px;font-weight:800;color:#719430;text-align:center;margin:6px 0}.rt-o-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid #f0f3e8;font-size:14px}.rt-o-row:last-child{border:none}.rt-o-row b{color:#4a6320}.rt-cta{background:linear-gradient(135deg,#719430,#4a6320);color:#fff;border-radius:14px;padding:32px;text-align:center;margin:30px 0}.rt-cta a{background:#fff;color:#4a6320;padding:12px 28px;border-radius:6px;font-weight:700;text-decoration:none;display:inline-block;margin-top:14px}.rt-code{background:#1e1e1e;color:#a3c163;padding:14px;border-radius:8px;font-family:Consolas,monospace;font-size:12px;white-space:pre-wrap;word-break:break-all;max-height:300px;overflow:auto}@media(max-width:768px){.rt-g{grid-template-columns:1fr}}<\/style>\n<div class=\"rt-h\">\n<h1>Calculateur de diff\u00e9rence de dates<\/h1>\n<p>Calculez la diff\u00e9rence exacte entre deux dates en jours, semaines, mois ou ann\u00e9es.<\/p>\n<\/div>\n<div class=\"rt-g\">\n<div class=\"rt-f\">\n<h3>Dates<\/h3>\n<p><label>Date de d\u00e9but<\/label><input type=\"text\" id=\"dd-start\" placeholder=\"AAAA-MM-JJ\"><label>Date de fin<\/label><input type=\"text\" id=\"dd-end\" placeholder=\"AAAA-MM-JJ\"><button class=\"rt-btn\" onclick=\"calcDd()\">Calculer<\/button><\/div>\n<div class=\"rt-o\">\n<h3>Diff\u00e9rence<\/h3>\n<div class=\"rt-o-big\" id=\"dd-big\">\u2014<\/div>\n<p style=\"text-align:center;color:#516048;font-size:13px;margin:0 0 18px\" id=\"dd-v\">Ex\u00e9cuter le calcul<\/p>\n<div class=\"rt-o-row\"><span>Jours<\/span><b id=\"dd-d\">\u2014<\/b><\/div>\n<div class=\"rt-o-row\"><span>Semaines<\/span><b id=\"dd-w\">\u2014<\/b><\/div>\n<div class=\"rt-o-row\"><span>Mois (environ)<\/span><b id=\"dd-m\">\u2014<\/b><\/div>\n<div class=\"rt-o-row\"><span>Ann\u00e9es (environ)<\/span><b id=\"dd-y\">\u2014<\/b><\/div>\n<\/div>\n<\/div>\n<p><script>function calcDd(){var s=new Date(document.getElementById(\"dd-start\").value);var e=new Date(document.getElementById(\"dd-end\").value);if(isNaN(s)||isNaN(e))return;var d=Math.abs((e-s)\/(1000*60*60*24));var w=d\/7;var m=d\/30.44;var y=d\/365.25;document.getElementById(\"dd-big\").textContent=Math.round(d)+\" days\";document.getElementById(\"dd-v\").textContent=\"Difference between dates\";document.getElementById(\"dd-d\").textContent=Math.round(d).toLocaleString();document.getElementById(\"dd-w\").textContent=w.toFixed(1);document.getElementById(\"dd-m\").textContent=m.toFixed(1);document.getElementById(\"dd-y\").textContent=y.toFixed(2);}<\/script><\/p>\n<h2>Calculs de dates rapides sans tableur<\/h2>\n<p>Utile pour les \u00e9ch\u00e9ances de projets, les anniversaires de publication de contenu, la fid\u00e9lisation des clients et la dur\u00e9e des contrats. Le calculateur g\u00e8re automatiquement les cas particuliers des ann\u00e9es bissextiles.<\/p>\n<h2>Foire aux questions<\/h2>\n<p><strong>Pourquoi les mois sont-ils approximatifs ?<\/strong><br \/>Les mois comptent entre 28 et 31 jours. Le calculateur utilise 30,44 jours (la dur\u00e9e moyenne d&#039;un mois) pour obtenir une approximation raisonnable.<\/p>\n<div class=\"rt-cta\">\n<h3 style=\"margin:0 0 6px\">Vous souhaitez un marketing qui soit livr\u00e9 \u00e0 temps, \u00e0 chaque cycle ?<\/h3>\n<p style=\"margin:0;opacity:.95\">L&#039;agence Riman g\u00e8re ses campagnes marketing selon un rythme de sprints rigoureux.<\/p>\n<p><a href=\"\/fr\/contact\/\">Contactez notre \u00e9quipe<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>Date Difference Calculator Calculate the exact difference between two dates in days, weeks, months, or years. Dates Start dateEnd dateCalculate Difference \u2014 Run calculation Days\u2014 Weeks\u2014 Months (approx)\u2014 Years (approx)\u2014 Quick date math without spreadsheets Useful for project deadlines, content publication anniversaries, customer tenure, contract durations. The calculator handles the leap-year edge cases automatically. Frequently [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4717","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Date Difference Calculator \u2014 Days, Weeks, Months - Riman Agency<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rimanagency.com\/fr\/date-difference-calculator-days-weeks-months\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Date Difference Calculator \u2014 Days, Weeks, Months - Riman Agency\" \/>\n<meta property=\"og:description\" content=\"Date Difference Calculator Calculate the exact difference between two dates in days, weeks, months, or years. Dates Start dateEnd dateCalculate Difference \u2014 Run calculation Days\u2014 Weeks\u2014 Months (approx)\u2014 Years (approx)\u2014 Quick date math without spreadsheets Useful for project deadlines, content publication anniversaries, customer tenure, contract durations. The calculator handles the leap-year edge cases automatically. 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