{"id":133,"date":"2026-05-25T11:27:16","date_gmt":"2026-05-25T09:27:16","guid":{"rendered":"http:\/\/outilstice.com\/?p=133"},"modified":"2026-05-25T19:04:39","modified_gmt":"2026-05-25T17:04:39","slug":"convertworld-un-convertisseur-universel","status":"publish","type":"post","link":"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/","title":{"rendered":"Convertworld: A free converter to convert all units"},"content":{"rendered":"<p>You prepare a chapter on measurements in mathematics or science. Looking for a simple way to show your students the difference between a mile and a kilometer, between a gallon and a liter, between Fahrenheit degrees and Celsius degrees. You want something that is immediately usable, without registration, installation or subscription. Something you can project in class or share as a complementary resource.<\/p>\n<p>Have you ever been in circles on Google looking for a simple converter, only to end up on a site full of dubious ads that doesn\u2019t even answer your question?<\/p>\n<p>In short, you may need <strong>Convertworld<\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter  wp-image-16381\" src=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-1024x914.jpg\" alt=\"convertworld application\" width=\"606\" height=\"541\" srcset=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-1024x914.jpg 1024w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-300x268.jpg 300w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-768x685.jpg 768w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-1536x1371.jpg 1536w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x-13x12.jpg 13w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-18.59.48@2x.jpg 1656w\" sizes=\"auto, (max-width: 606px) 100vw, 606px\" \/><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a15343c194a1\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a15343c194a1\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Convertworld_un_convertisseur_dunites_universel_et_gratuit\" >Convertworld, a universal and free unit converter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Que_propose_Convertworld_pour_la_classe\" >What does Convertworld offer for the class?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Des_conversions_pour_presque_toutes_les_disciplines_scolaires\" >Conversions for almost all school disciplines<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Un_convertisseur_de_devises_actualise_en_temps_reel\" >A currency converter updated in real time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Un_outil_multilingue_sans_compte_ni_installation\" >A multilingual tool, without account or installation<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Comment_utiliser_Convertworld_en_classe\" >How to use Convertworld in class?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#En_maths_pour_donner_du_sens_aux_unites\" >In math, to give meaning to units<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#En_sciences_physiques_et_en_chimie\" >Physical Sciences and Chemistry<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#En_geographie_et_en_SVT\" >Geography and SVT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#En_cours_de_langues_vivantes\" >In the course of modern languages<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Les_points_forts\" >Strengths<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#Jaime_moins%E2%80%A6\" >I like \u2026 less<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/outilstice.com\/en\/2026\/05\/convertworld-un-convertisseur-universel\/#A_retenir\" >To remember<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Convertworld_un_convertisseur_dunites_universel_et_gratuit\"><\/span>Convertworld, a universal and free unit converter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/www.convertworld.com\/fr\/\" target=\"_blank\" rel=\"noopener\">Convertworld<\/a> is an online unit conversion service, available free of charge since 2005. On paper, nothing revolutionary: it is a converter. But in use, it is one of the most comprehensive I have seen for educational use.<\/p>\n<p>The site covers an impressive spectrum: <strong>lengths, masses, volumes, <a href=\"https:\/\/outilstice.com\/2025\/06\/futureguessr-jeu-geographique-simulation-climat\/\" target=\"_blank\" rel=\"noopener\">temperatures<\/a>, speeds, areas, currencies, shoe sizes, paper sizes, time zones, radioactivity, photometry, electrical quantities<\/strong>, and even a BMI calculator or pregnancy schedule. Everything is available in more than thirty languages, with exchange rates updated in real time.<\/p>\n<p>It is not an AI tool. It is not a sophisticated application. It is a solid, stable web tool that does exactly what it has promised for 20 years. And sometimes that\u2019s exactly what you need in class.<\/p>\n<p><!-- notionvc: 0c347975-be2b-48a8-bdb1-6af488f87a2b --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Que_propose_Convertworld_pour_la_classe\"><\/span>What does Convertworld offer for the class?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Des_conversions_pour_presque_toutes_les_disciplines_scolaires\"><\/span>Conversions for almost all school disciplines<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The menu of the site is organized by thematic families. A few telling examples for a classroom:<\/p>\n<p><strong>Mathematics and physics:<\/strong><\/p>\n<ul>\n<li>Length (meters, feet, inches, miles, light years).<\/li>\n<li>Mass (kilos, pounds, ounces, tons).<\/li>\n<li>Volume (litres, gallons, pints, centilitres).<\/li>\n<li>Area (m\u00b2, hectares, acres).<\/li>\n<li>Pressure, speed, acceleration, force, angle.<\/li>\n<\/ul>\n<p><strong>In chemistry:<\/strong><\/p>\n<ul>\n<li>Molar mass, density, dynamic and kinematic viscosity, quantity of matter.<\/li>\n<\/ul>\n<p><strong>In geography:<\/strong><\/p>\n<ul>\n<li>Time zones (for <a href=\"https:\/\/outilstice.com\/2026\/01\/remonter-le-temps-avec-les-cartes-aeriennes-de-lign\/\" target=\"_blank\" rel=\"noopener\">contextualize a map<\/a>, explain jet lag).<\/li>\n<li>Currencies (real-time exchange rate for more than 150 currencies, including Bitcoin).<\/li>\n<\/ul>\n<p><strong>In technology and computer science:<\/strong><\/p>\n<ul>\n<li>Computer measurements (bits, bytes, kilobytes, megabytes).<\/li>\n<li>Bandwidth.<\/li>\n<\/ul>\n<p><strong>Physical education and health:<\/strong><\/p>\n<ul>\n<li>BMI (body mass index).<\/li>\n<li>Clothing and shoe sizes to compare the European, American, British and Asian systems.<\/li>\n<\/ul>\n<p>It is this diversity that makes Convertworld useful far beyond just <a href=\"https:\/\/outilstice.com\/2020\/12\/histoires-de-mathematiques-site-de-prof\/\" target=\"_blank\" rel=\"noopener\">Mathematics Course<\/a>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-16382\" src=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-1024x451.jpg\" alt=\"Universal Conveteur\" width=\"720\" height=\"317\" srcset=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-1024x451.jpg 1024w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-300x132.jpg 300w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-768x338.jpg 768w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-1536x676.jpg 1536w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x-18x8.jpg 18w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.01.11@2x.jpg 1920w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/p>\n<p><!-- notionvc: 9f0edaeb-36d0-4a31-bd41-e128f203b31f --><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Un_convertisseur_de_devises_actualise_en_temps_reel\"><\/span>A currency converter updated in real time<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>This is one of the most useful sections for courses in economics, geography or even<a href=\"https:\/\/outilstice.com\/2022\/06\/glosbe-plus-grand-dictionnaire-de-langues-au-monde\/\"> Modern languages<\/a>. Convertworld displays discounted exchange rates for more than 150 currencies, from the US dollar to the Malagasy ariary to bitcoin.<\/p>\n<p>In seconds, you can show your students how much one euro in Japanese yen is worth today, or compare the purchasing power of different currencies. A good entry point for a discussion on financial markets or global inequalities.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Un_outil_multilingue_sans_compte_ni_installation\"><\/span>A multilingual tool, without account or installation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No account creation. No e-mail address to be provided. No application to download. We arrive at the site, we convert, we leave. The interface is available in more than 30 languages, which may be of interest to teachers who work with allophone students or who want to compare interfaces in different languages.<\/p>\n<p>The interface is sober. Maybe a little dated visually, but clear and functional. And this, for classroom use, is often better than an overloaded interface.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Comment_utiliser_Convertworld_en_classe\"><\/span>How to use Convertworld in class?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"En_maths_pour_donner_du_sens_aux_unites\"><\/span>In math, to give meaning to units<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Instead of teaching conversions in an abstract way, project Convertworld to the table. Show live how much 5 miles in miles, or how much a pound weighs in grams. Enter the values, observe the result in real time, and let students propose their own conversions. The tool becomes a simple visual manipulation medium.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"En_sciences_physiques_et_en_chimie\"><\/span>Physical Sciences and Chemistry<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Conversions of energy (joules, calories, kilowatt hours), pressure (pascals, bars, atmospheres) or density are often confusing. Having a reliable reference tool at the click of a button can help consolidate learning and verify calculations.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"En_geographie_et_en_SVT\"><\/span>Geography and SVT<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Time zones make it possible to concretely visualize the discrepancies between countries. The section on wind speed can complete a course on meteorological phenomena. Area can be used to compare countries, regions or ecosystems.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"En_cours_de_langues_vivantes\"><\/span>In the course of modern languages<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In English, showing that Americans or Brits still use miles, yards, thumbs and gallons helps students better understand English culture. The same applies to temperatures: 72\u00b0F, what does it mean concretely for a French student?<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-16383\" src=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-1024x783.jpg\" alt=\"Force Calculation Table in Convertworld\" width=\"720\" height=\"551\" srcset=\"https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-1024x783.jpg 1024w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-300x229.jpg 300w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-768x587.jpg 768w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-1536x1175.jpg 1536w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x-16x12.jpg 16w, https:\/\/outilstice.com\/wp-content\/uploads\/2012\/11\/CleanShot-2026-05-25-at-19.03.08@2x.jpg 1632w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Les_points_forts\"><\/span>Strengths<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Free, no account, no installation.<\/strong> Zero friction to begin with.<\/li>\n<li><strong>Very wide coverage.<\/strong> Few tools offer so many categories in one piece.<\/li>\n<li><strong>Real-time exchange rate.<\/strong> Useful for teachers dealing with economics or geography.<\/li>\n<li><strong>Multilingual.<\/strong> Accessible to a variety of audiences.<\/li>\n<li><strong>Stable.<\/strong> The site has existed since 2005, a real guarantee of reliability.<\/li>\n<li><strong>No student account to manage.<\/strong> No personal data collected for common use.\u00a0The site states that it complies with the GDPR, which is a positive point for use in school contexts.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Jaime_moins%E2%80%A6\"><\/span>I like \u2026 less<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Convertworld is funded by advertising<\/strong>. This is the price to pay for free. The ads are present, sometimes invasive depending on the screens. It is not prohibitive in class if you go through a projector, but it can be a barrier for autonomous use by students on their own device.<\/p>\n<p>The interface has not changed much visually in recent years. It remains functional, but lacks a bit of elegance compared to newer tools.<\/p>\n<p>Finally, some very specialized sections (radioactivity, kinematic viscosity) will not necessarily find a taker in an ordinary classroom. But they're there if you need them.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"A_retenir\"><\/span>To remember<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Convertworld is the digital tool you are not looking for but should have in your favourites. Not because it is new, not because it uses AI, not because it offers a revolutionary learning experience. But because it does exactly what it says, does it well, is free and covers a pedagogical territory often poorly served by the tools available.<\/p>\n<p>If you teach science, math, geography, economics or modern languages, if you provide academic support or even for personal use, <strong>Convertworld clearly deserves a bookmark in your browser<\/strong>.<\/p>\n<p>To be tested during your next course on units of measurement. You'll see.<\/p>\n<hr \/>\n<p><em>Convertworld is available for free on <a href=\"http:\/\/convertworld.com\" target=\"_blank\" rel=\"noopener\">convertworld.com<\/a>. No registration is required. Interface available in French and more than thirty languages.<\/em><\/p>\n<p><!-- notionvc: 702d4377-aee2-4f87-88f5-fa44bb5dc9f3 --><\/p>","protected":false},"excerpt":{"rendered":"<p>You prepare a chapter on measurements in mathematics or science. Looking for a simple way to show your students the difference between a mile and a kilometer, between a gallon and...<\/p>","protected":false},"author":1,"featured_media":2179,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[19,14,23],"tags":[85,84,90,80],"class_list":["post-133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mathematiques","category-ressources","category-sciences","tag-mathematiques","tag-ressources","tag-sciences","tag-utilitaires"],"modified_by":"Fidel Navamuel","_links":{"self":[{"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/posts\/133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/comments?post=133"}],"version-history":[{"count":3,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/posts\/133\/revisions"}],"predecessor-version":[{"id":16384,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/posts\/133\/revisions\/16384"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/media\/2179"}],"wp:attachment":[{"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/media?parent=133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/categories?post=133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/outilstice.com\/en\/wp-json\/wp\/v2\/tags?post=133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}