Hafta Sany Kalkülatory
Her bir taryh üçin ISO hepde we ýyl günüň sanyny tap.
Netijeler ýazýan wagtyň täzelener.
Bu hasapçy hakda
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.
Köp soralýan soraglar
ISO hepde sany nädip kesgitlenýär?
ISO 8601 astynda hepdeler ertirden başlar we hepde 1 ýylyň ilkinji çarşenbesini içeren hepdedir — ekwiwalent, 4 Janwary içeren hepdedir. Şu sebäpden Janwaryň başy we Dekabryň aýy bir ýakyn ýyla degişli bolup biler.
Näme üçin ISO ýyly bazen kalendar ýylyndan tapawutlanýar?
Janwaryň ilkinji günlerindeki taryhlar öňki ýylyň soňky ISO hepdesinde düşip biler, we dekabriň soňky günleridäki taryhlar soňky ýylyň 1 hepdesinde düşip biler. ISO hepde-saýlaw ýyly hepdäniň haýsy ýyla degişlidigini görkezýär.
Taryh näçe dörtlükde?
Çeper, adaty wagta degişli kalendar çärýegidir: Q1, Ýanwar-Mart, Q2, Aprel-Iýun, Q3, Ýul-Seýlül we Q4, Oktýabr-Dekabr.
Bir ýylda näçe hepde bar?
ISO 8601 astynda bir ýyl 52 hepdeden ybarat bolup, köplenç ýyllarda 53 hepdeden ybarat bolup (1 Janwar ýa-da 31 Dekabr çärýekli ýyllar Çarşenbe güne düşende). Bu esbap size şu ýylda galan ISO hepdeleriň sanyny aýdýar.
ISO we US hepde nomerleme arasyndaky tapawut näme?
ISO hepdeler ertirden başlap 1 hepde 1-nji çarşenbeden başlap başlar. Umumy amerikan konwensiýasy hepdeleri gündizden başlap 1 janwardan başlap hepde 1-nji hepdeden başlap başlar. Bu hasapçy ISO standarty ulanýar, şonuň üçin sanlar 1 bilen amerikan kalendaryndan tapawutlanyp biler.
CW ýa-da KW kalendarda näme aňladýar?
CW (kalendar hepdesi) we almança KW (Kalenderwoche) diňe ISO hepde sany üçin etiketlerdir - CW 34 ISO hepde 34. Bu hepde içinde her bir senesini gir, onuň haýsy CW/KW'e degişlidigini tassyklamak üçin.
API — bu hasapçyny koddan ullan
Bu hasapçyny boş JSON ahtar noktasy hökmünde çagyr - açar gerek däl. Aşakdaky meýdança mykdarlaryny soragyň parametrleri ýa-da JSON hökmünde iber. Siziň goýmaýan hernäňiz şu sahypanyň öň bellenen öň bellenenini ulanýar; namydar parametr 400, hiç wagt sessiz sıfır däl. Eňlisçe senedleri oka →
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);Netijeler diňe umumy ýardam üçin hasaplanypdyr, maliýe, saglyk ýa-da salgyt maslahaty üçin däl.