{"id":47623,"date":"2026-10-26T04:21:06","date_gmt":"2026-10-26T04:21:06","guid":{"rendered":"https:\/\/www.worldclock.com\/prevodnik-unix-timestamp\/"},"modified":"2026-10-26T04:21:06","modified_gmt":"2026-10-26T04:21:06","slug":"prevodnik-unix-timestamp","status":"publish","type":"page","link":"https:\/\/www.worldclock.com\/cs\/prevodnik-unix-timestamp\/","title":{"rendered":"P\u0159evodn\u00edk unixov\u00e9ho \u010dasu"},"content":{"rendered":"<div class=\"wc wc-tool-page wc-tool-page--unix\"><header class=\"wc-thero\"><div class=\"wc-thero__text\"><nav class=\"wc-crumbs\" aria-label=\"Breadcrumb\"><ol><li><a href=\"https:\/\/www.worldclock.com\/cs\/\">Sv\u011btov\u00fd \u010das<\/a><\/li><li><a href=\"https:\/\/www.worldclock.com\/cs\/nastroje\/\">\u010casov\u00e9 n\u00e1stroje<\/a><\/li><li><span aria-current=\"page\">P\u0159evodn\u00edk unixov\u00e9ho \u010dasu<\/span><\/li><\/ol><\/nav><p class=\"wc-eyebrow\"><span aria-hidden=\"true\">\ud83d\udcbb<\/span> N\u00e1stroj zdarma<\/p><h1 class=\"wc-thero__title\">P\u0159evodn\u00edk unixov\u00e9ho \u010dasu<\/h1><p class=\"wc-thero__lead\">P\u0159eve\u010fte unixov\u00fd \u010das (epoch) na b\u011b\u017en\u00e9 datum a zp\u011bt v jak\u00e9mkoli \u010dasov\u00e9m p\u00e1smu. Sekundy, milisekundy i mikrosekundy se rozpoznaj\u00ed automaticky.<\/p><\/div><\/header><div class=\"wc-tool\"><div class=\"wc-unix\" data-wc-tool=\"unix\"><div class=\"wc-unix__now\"><p class=\"wc-eyebrow\">Aktu\u00e1ln\u00ed unixov\u00fd \u010das<\/p><p class=\"wc-unix__epoch\"><span data-epoch>1793007280<\/span> <button type=\"button\" class=\"wc-btn wc-btn--sm\" data-copy=\"epoch\">Kop\u00edrovat<\/button><\/p><p class=\"wc-tnote\">Milisekundy: <code data-epochms>1793007280000<\/code><\/p><\/div><div class=\"wc-unix__cols\"><div class=\"wc-unix__box\"><h2>Timestamp \u2192 datum<\/h2><label class=\"wc-field\"><span>Unixov\u00fd timestamp<\/span><input type=\"text\" inputmode=\"numeric\" data-ts value=\"1793007280\"><\/label><label class=\"wc-field\"><span>Zobrazit v \u010dasov\u00e9m p\u00e1smu<\/span><select data-tz1><\/select><\/label><dl class=\"wc-unix__out\" data-out1><\/dl><\/div><div class=\"wc-unix__box\"><h2>Datum \u2192 timestamp<\/h2><label class=\"wc-field\"><span>Datum a \u010das<\/span><input type=\"datetime-local\" step=\"1\" data-dt><\/label><label class=\"wc-field\"><span>\u010casov\u00e9 p\u00e1smo tohoto data<\/span><select data-tz2><\/select><\/label><dl class=\"wc-unix__out\" data-out2><\/dl><\/div><\/div><div class=\"wc-unix__milestones\" data-milestones><\/div><\/div><\/div><section class=\"wc-section wc-tool-info\"><div class=\"wc-prose\"><h2>Co je unixov\u00fd timestamp?<\/h2><p>Unixov\u00fd timestamp (tak\u00e9 unixov\u00fd \u010das, epoch time nebo \u010das POSIX) je po\u010det sekund, kter\u00e9 uplynuly od <strong>1. ledna 1970 00:00:00 UTC<\/strong>, bez zapo\u010dten\u00ed p\u0159estupn\u00fdch sekund. Proto\u017ee je ve stejn\u00e9m okam\u017eiku stejn\u00fd v\u0161ude na sv\u011bt\u011b, je to standardn\u00ed zp\u016fsob, jak\u00fdm po\u010d\u00edta\u010de ukl\u00e1daj\u00ed a p\u0159ed\u00e1vaj\u00ed \u010das \u2013 \u010dasov\u00e9 p\u00e1smo se pou\u017eije a\u017e p\u0159i zobrazen\u00ed \u010d\u00edsla \u010dlov\u011bku.<\/p><p>Mnoho syst\u00e9m\u016f pou\u017e\u00edv\u00e1 m\u00edsto sekund (10 \u010d\u00edslic) milisekundy (13 \u010d\u00edslic). Tento p\u0159evodn\u00edk rozpozn\u00e1 sekundy, milisekundy i mikrosekundy automaticky.<\/p><h2>Probl\u00e9m roku 2038<\/h2><p>Star\u0161\u00ed syst\u00e9my ukl\u00e1daj\u00ed timestamp jako 32bitov\u00e9 \u010d\u00edslo se znam\u00e9nkem, kter\u00e9 p\u0159ete\u010de na hodnot\u011b 2 147 483 647 \u2013 19. ledna 2038 v 03:14:07 UTC. Modern\u00edch 64bitov\u00fdch syst\u00e9m\u016f se to net\u00fdk\u00e1.<\/p><h2>Jak z\u00edskat aktu\u00e1ln\u00ed timestamp v k\u00f3du<\/h2><\/div><div class=\"wc-table-wrap\"><table class=\"wc-code\"><tr><th>JavaScript<\/th><td><code>Math.floor(Date.now() \/ 1000)<\/code><\/td><\/tr><tr><th>Python<\/th><td><code>import time; int(time.time())<\/code><\/td><\/tr><tr><th>PHP<\/th><td><code>time()<\/code><\/td><\/tr><tr><th>Java<\/th><td><code>Instant.now().getEpochSecond()<\/code><\/td><\/tr><tr><th>C#<\/th><td><code>DateTimeOffset.UtcNow.ToUnixTimeSeconds()<\/code><\/td><\/tr><tr><th>Go<\/th><td><code>time.Now().Unix()<\/code><\/td><\/tr><tr><th>Ruby<\/th><td><code>Time.now.to_i<\/code><\/td><\/tr><tr><th>Rust<\/th><td><code>SystemTime::now().duration_since(UNIX_EPOCH)?.as_secs()<\/code><\/td><\/tr><tr><th>MySQL<\/th><td><code>SELECT UNIX_TIMESTAMP();<\/code><\/td><\/tr><tr><th>PostgreSQL<\/th><td><code>SELECT extract(epoch FROM now());<\/code><\/td><\/tr><tr><th>Bash<\/th><td><code>date +%s<\/code><\/td><\/tr><\/table><\/div><\/section><section class=\"wc-section wc-faq\"><h2>\u010cast\u00e9 dotazy<\/h2><details><summary>Co je epoch time?<\/summary><p>Epoch time je po\u010det sekund od unixov\u00e9 epochy, tedy od 1. ledna 1970 00:00:00 UTC. Je to tot\u00e9\u017e co unixov\u00fd timestamp.<\/p><\/details><details><summary>Je unixov\u00fd timestamp v UTC?<\/summary><p>Ano. Unixov\u00fd timestamp se v\u017edy po\u010d\u00edt\u00e1 od p\u016flnoci UTC 1. ledna 1970, tak\u017ee nem\u00e1 \u017e\u00e1dn\u00e9 \u010dasov\u00e9 p\u00e1smo. M\u00edstn\u00edm datem a \u010dasem se stane teprve po p\u0159evodu pro konkr\u00e9tn\u00ed \u010dasov\u00e9 p\u00e1smo.<\/p><\/details><details><summary>Jak pozn\u00e1m, zda je timestamp v sekund\u00e1ch, nebo v milisekund\u00e1ch?<\/summary><p>Aktu\u00e1ln\u00ed timestampy v sekund\u00e1ch maj\u00ed 10 \u010d\u00edslic, v milisekund\u00e1ch 13 a v mikrosekund\u00e1ch 16. P\u0159evodn\u00edk to rozpozn\u00e1 automaticky.<\/p><\/details><\/section><section class=\"wc-section wc-tools-grid\"><div class=\"wc-section__head\"><h2>Dal\u0161\u00ed \u010dasov\u00e9 n\u00e1stroje zdarma<\/h2><a href=\"https:\/\/www.worldclock.com\/cs\/nastroje\/\">V\u0161echny n\u00e1stroje \u2192<\/a><\/div><div class=\"wc-toolcards\"><a class=\"wc-toolcard wc-toolcard--converter\" href=\"https:\/\/www.worldclock.com\/cs\/prevodnik-casovych-pasem\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udd01<\/span><span class=\"wc-toolcard__name\">P\u0159evodn\u00edk \u010dasov\u00fdch p\u00e1sem<\/span><span class=\"wc-toolcard__desc\">P\u0159eve\u010fte \u010das mezi libovoln\u00fdmi m\u011bsty.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--difference\" href=\"https:\/\/www.worldclock.com\/cs\/casovy-posun\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\u2194\ufe0f<\/span><span class=\"wc-toolcard__name\">Kalkula\u010dka \u010dasov\u00e9ho posunu<\/span><span class=\"wc-toolcard__desc\">Hodinov\u00fd rozd\u00edl mezi libovoln\u00fdmi m\u011bsty.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--meeting\" href=\"https:\/\/www.worldclock.com\/cs\/planovac-schuzek\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udcc5<\/span><span class=\"wc-toolcard__name\">Pl\u00e1nova\u010d sch\u016fzek<\/span><span class=\"wc-toolcard__desc\">Najd\u011bte \u010das sch\u016fzky vhodn\u00fd pro v\u0161echna m\u011bsta.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--whereami\" href=\"https:\/\/www.worldclock.com\/cs\/v-jakem-casovem-pasmu-jsem\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udccd<\/span><span class=\"wc-toolcard__name\">V jak\u00e9m \u010dasov\u00e9m p\u00e1smu jsem?<\/span><span class=\"wc-toolcard__desc\">Va\u0161e \u010dasov\u00e9 p\u00e1smo, zji\u0161t\u011bn\u00e9 automaticky.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--military\" href=\"https:\/\/www.worldclock.com\/cs\/prevodnik-vojenskeho-casu\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf96\ufe0f<\/span><span class=\"wc-toolcard__name\">P\u0159evodn\u00edk vojensk\u00e9ho \u010dasu<\/span><span class=\"wc-toolcard__desc\">24hodinov\u00fd \u010das a \u010das Zulu snadno.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--flight\" href=\"https:\/\/www.worldclock.com\/cs\/kalkulacka-doby-letu\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83d\udeec<\/span><span class=\"wc-toolcard__name\">Kalkula\u010dka \u010dasu p\u0159\u00edletu<\/span><span class=\"wc-toolcard__desc\">M\u00edstn\u00ed \u010das p\u0159\u00edletu pro jak\u00fdkoli let.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--moon\" href=\"https:\/\/www.worldclock.com\/cs\/faze-mesice\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\ud83c\udf15<\/span><span class=\"wc-toolcard__name\">F\u00e1ze M\u011bs\u00edce dnes<\/span><span class=\"wc-toolcard__desc\">Dne\u0161n\u00ed M\u011bs\u00edc a lun\u00e1rn\u00ed kalend\u00e1\u0159.<\/span><\/a><a class=\"wc-toolcard wc-toolcard--alarm\" href=\"https:\/\/www.worldclock.com\/cs\/online-budik\/\"><span class=\"wc-toolcard__icon\" aria-hidden=\"true\">\u23f0<\/span><span class=\"wc-toolcard__name\">Online bud\u00edk<\/span><span class=\"wc-toolcard__desc\">Bud\u00edk zdarma v prohl\u00ed\u017ee\u010di.<\/span><\/a><\/div><\/section><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":"","bs_cache_bypass_cache":0,"bs_cache_related_page":0},"class_list":["post-47623","page","type-page","status-publish","hentry"],"acf":[],"taxonomy_info":[],"featured_image_src_large":false,"author_info":{"display_name":"clocker","author_link":"https:\/\/www.worldclock.com\/cs\/author\/clocker\/"},"comment_info":"","_links":{"self":[{"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/pages\/47623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/comments?post=47623"}],"version-history":[{"count":0,"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/pages\/47623\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.worldclock.com\/cs\/wp-json\/wp\/v2\/media?parent=47623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}