Chipiri Chishanu
Kuwana ISO vhiki nhamba uye zuva regore kune chero zuva.
Zvinyorwa zvinogadziridzwa paunenge uchinyora.
Nezve iyi kalkulator
A week number calculator returns the ISO 8601 week number for a date — the standard used across business, logistics and Europe, where weeks run Monday to Sunday and week 1 is the week containing the first Thursday of the year. It also gives the ISO week-numbering year, the calendar quarter, the day-of-year number and how many weeks are left in the year.
Under the ISO rule a year has 52 or 53 weeks, each running Monday to Sunday, and week 1 is defined as the week that holds the year’s first Thursday (equivalently, the week containing 4 January). This is why a date in the first days of January can still belong to the last week of the previous year, and a late-December date can already sit in week 1 of the next year — the tool reports the ISO week-numbering year separately so that mismatch is clear.
For example, 1 January 2026 falls in ISO week 1 of 2026, but 1 January 2023 (a Sunday) sits in ISO week 52 of 2022. Manufacturing, shipping, publishing and European payroll systems schedule by these "CW" or "KW" week numbers, so this is the tool for answering "what week number is it", planning a delivery for "week 34", or checking which quarter a date belongs to.
Zvimwe zvinobvunzwa zvakanyanya
Sei ISO zuva revhiki rakanyorwa?
Zvichienderana neISO 8601, vhiki dzinotanga musi waChitatu uye vhiki 1 ivhiki rine zuva rekutanga remwedzi — zvakaenzana, vhiki rine zuva re4 January. Izvi ndizvo zvinoita kuti zuva rekutanga raJanuary nezuva rekupedzisira raDecember rigone kumbova raiva gore rakafanana.
Nei gore reISO richisiyana negore rezuva nezuva?
Mazuva ekutanga eJanuary anogona kuitika mu ISO yekupedzisira vhiki yegore rapfuura, uye zuva rekupedzisira raDecember rinogona kuitika muvhiki 1 yegore rinouya. ISO week-numbering year reflects which year the week belongs to.
Ndeipi quarter iyo zuva iri mu?
Kurume ndicho chizvarwa chegore chezuva rakajairika: Q1 iJanuary-March, Q2 April-June, Q3 July-September uye Q4 October-December.
Ndezvipi zviviri zvinobva muzuva?
Zvichienderana neISO 8601, gore rine mazuva 52 mumakore akawanda uye mazuva 53 mumakore mashoma (kana 1 Gunyana kana gore rakapera 31 Gunyana richiitika musi weMuvhuro). Chirongwa ichi chinokuudza kuti ISO mazuva mangani aripo mugore razvino.
Ndeipi kusiyana pakati peISO neUS week numerations?
ISO vhiki vanotanga musi weMuvhuro nevhiki 1 kuchengeta yekutanga Chitatu. The common US convention starts weeks on Sunday and calls the week of 1 January week 1. This calculator uses the ISO standard, so numbers can differ by one from a US calendar.
Chii chinonzi CW kana KW zvinoreva pazuva rezuva?
CW (calendar week) uye German KW (Kalenderwoche) ndezvemazita ezuva re ISO — CW 34 ndiyo ISO week 34. Dzvanya chero zuva rezuva rekuti uone kuti ndeipi CW/KW inonzi.
API — kushandisa iyi kalkulator kubva code
Nhare iyi calculator semahara JSON endpoint - hapana chikuru zvinodiwa. Kutumira nzvimbo mavara pasi separameter query kana JSON. Chii zvachose chaunoisa kunze chinoshandisa default iyo peji iri rakasviba nayo; parameter isiri yechokwadi inonzi 400, uye haisi zero. Tora yakazara API docs →
Endpoint
GET https://calculator.free/api/v1/week-number/curl
curl "https://calculator.free/api/v1/week-number/?date=2026-09-08"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/week-number/?" + new URLSearchParams({
"date": "2026-09-08"
}));
const data = await r.json();
console.log(data.results);Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.