Ko te tātaitai rānei o te rā
Tae atu, tango rānei i ngā rā, wiki, marama, tau rānei mai i tētahi rā.
Ka whakahōutia ngā hua i te wā e tātuhi ana.
Mo tēnei tātaitai
An add or subtract days calculator shifts a start date by a number of days — and optionally weeks, months and years — and shows the resulting calendar date, which day of the week it falls on, its day-of-year number and the net shift in days. It handles month lengths and leap years automatically, so "3 months from" the 30th or the 31st lands on a real date rather than an impossible one like 31 February.
The way it works is simple: pick a start date, choose Add or Subtract, and enter how many days, weeks, months or years to move. Years and months are applied first against the calendar, then the weeks and days are counted off one by one, so the answer respects the fact that months are 28–31 days long and that leap years have an extra 29 February. The result is a single shifted date together with its weekday, its ISO form (YYYY-MM-DD) and the total net movement in days.
For a worked example, start on Friday 15 August 2025 and add 90 days: the tool returns Thursday 13 November 2025, day 317 of the year, a net shift of +90 days. People reach for this when counting a warranty or return window, a 30/60/90-day notice period, a due date 40 weeks from conception, a court or contract deadline, or simply "what date is 100 days from now".
Ko nga pātai e pā ana
He pēhea te tāpiri i ngā marama ki tētahi rā?
Ka tāpirihia nga marama e te rārangi, ehara i te maha o ngā rā. Ko te tāpiri i tētahi marama ki te 15 o Hānuere ka tuku i te 15 o Hānuere. Ki te iti ake te marama ūnga, ka whakaroa te rā ki te marama whai ake — 31 o Hānuere tae atu ki tētahi marama e tū ana i te tīmatanga o Māhuru.
Ka whakawhiti te tangohanga ki te tau o mua?
Heoi anō, ko te tango i ngā rā, wiki, marama rānei i te wā e toe ana i te tau o nāianei, ka haere anō anake i runga i te rohenga tau, e tika ana te whakahua i te roa rerekē o ia marama me tētahi rā pōturi.
Ka taea e au te whakakotahi i ngā rā, wiki, marama me ngā tau?
He. Ko ngā āpure e whā katoa e hoatu tahi ana i te aronga i kōwhiria. Ko ngā tau me ngā marama e hoatu tuatahitia ana, kātahi ko ngā wiki me ngā rā, kia kotahi te hua o te rā i whakawhitia.
He aha te rā e 90 rā ana mai i tētahi rā i tukuna?
Ka tāuru i te rā tīmata, ka waiho te mahi i te Tāpiri, ā, ka whakatakoto 90 i te āpure Rā. Ka tatau te tātaitai i ngā rā 90 o te rā takitahi ki mua — hei tauira, ko te 90 o ngā rā i muri i te 15 o Aogota 2025 ko te 13 o Hānuere 2025 — ā, ka tapaina hoki te rā wiki e tū ana.
E whakaaro ana rātau ki nga tau whakarerekētanga?
Heoi. Ko te tāpiri, te tangohanga rānei i te 29 o Hāpua, ka whakahaeretia ā-māoritia, kia tika ai te neke tau kotahi mai i te 1 o Māri 2024 ki te 1 o Māri 2025, ahakoa i roto i te 2024 te rā pōturi tāpiri.
He pēhea te rerekētanga o tēnei i te tātaitai rerekētanga rā?
Ka mau tēnei utauta i tētahi rā, ā, ka neke atu i te roa o te wā hei kimi i tētahi rā hou. E rua ngā rā e mōhiotia ana e koe, ā, ka ine te tauine i waenganui i a rātou.
E tatau ana rātau i te rā tīmata?
Kāore. Ko te rā tīmatanga ko te ārai, ehara i te rā tuatahi. Ko te tāpiri i tētahi rā ki te Rā Pōhā e tuku ana i te Rā Pōhā, nō reira ko te tau e tāpoi ana koe ko te rahi o te hiku, ehara i te tūnga i roto i te rārangi o ngā rā.
API — whakamahi tēnei tātaitai mai i te waehere
E kī ana tēnei tātaitai hei wāhi mutunga kore JSON - kāore he kī e hiahiatia ana. Ka tukuna ngā uara āpure i raro nei hei tohutoro pātai, JSON rānei. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Ka pānui te papatono API katoa →
Whakamutunga
GET https://calculator.free/api/v1/add-subtract-days/curl
curl "https://calculator.free/api/v1/add-subtract-days/?start=2026-10-08&operation=add&days=30"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/add-subtract-days/?" + new URLSearchParams({
"start": "2026-10-08",
"operation": "add",
"days": "30"
}));
const data = await r.json();
console.log(data.results);Ko ngā hua he whakataunga mō te tohutohu ahuwhānui anake, ehara i te tohutohu moni, rongoā, tāke rānei.