I-Calculator ye-Pregnancy Due Date
Ukwazi ukuba umhla oza kuzalwa ufika njani kwaye ukhulelwe ixesha elingakanani ukusukela kwixesha lakho lokugqibela lokukhulelwa.
Iinketho ze projekti
Malunga nale Calculator
A pregnancy due date calculator estimates your delivery date using Naegele’s rule: 280 days (40 weeks) from the first day of your last menstrual period (LMP). It adjusts for cycle lengths other than 28 days, and also shows the estimated conception date and how many weeks along you are today. Only about 5% of babies arrive on the exact date.
Because ovulation drives conception, the tool corrects for cycle length. A 32-day cycle is 4 days longer than the standard 28, so it adds those 4 days: the due date becomes LMP + 284 days and the estimated conception moves to about day 18 instead of day 14. It then counts from your LMP to today to show how many weeks and days pregnant you are and which trimester you are in.
Use it early in pregnancy for a working timeline of milestones — the end of the first trimester at week 13, the anatomy scan around week 20, and full term from week 37. The due date is only an estimate: a normal birth can happen anywhere from 37 to 42 weeks, and an early dating ultrasound is more precise. This tool is for information, not medical advice; your provider confirms your dates.
Imibuzo ebuza rhoqo
Umhla wokugqiba ubalolwa njani?
By Naegele’s rule: add 280 days (40 weeks) to the first day of your last menstrual period. This pregnancy due date calculator also adds the difference if your cycle is longer or shorter than the standard 28 days.
Umhla omiselweyo wokuzalwa uchanekile kangakanani?
Oku kuqikelelwa ukuba iipesenti ezingama-5 kuphela zeentliziyo ezizalwa ngexesha elifanelekileyo, kwaye uzalwa ngokuqhelekileyo, ngokugqithiseleyo, kuqala kwiiveki ezi-37 ukuya kwezi-42. Uvavanyo lwe-ultrasound olukhawulezayo lunika umhla ocacileyo.
Yintoni ukuba andiyazi umhla wam wokuphelelwa kwenyanga?
Inkqubo ye-LMP ifuna lo mhla. Ukuba umjikelo wakho awuhambelani okanye awuziwanga, uvavanyo lwe-ultrasound lomhla luya kusetyenziselwa ukubonelela ngenkonzo.
Ndineminyaka elingakanani ndikhulelwe?
Ukukhulelwa kuqalwa ngomhla wokuqala wexesha lakho lokugqibela lokukhulelwa, hayi ukusukela ekukhulelweni, ngoko ke ubalwa njengeveki ezimbini ezidlulayo xa ukhulelwe. Isixhobo sibonisa iiveki zakho nakwiimini zakho ngokubala ukusuka kwi-LMP yakho ukuya namhlanje.
Zithini iinyanga ezintathu zokhulelwa?
Ixesha lokuqala lokukhulelwa liqala kwiveki ye-13, elinye liqala kwiveki ye-27, kwaye elinye liqala kwiveki ye-28 ukuya ekuzalwani. I-calculator ichaza ixesha lakho lokhulelwa ngokulinganisa ukuba ukhulelwe ngeveki ezili-12.
Ingaba ubude besiqhelo butshintsha umhla wokuzalwa?
Ewe. Umthetho kaNaegele ukholelwa ukuba umjikelo uhlala uhlala ixesha elingaphezu kweentsuku ezili-28; umjikelo omde uthetha ukuba ukhulelwe kamva, ngoko ke isixhobo sidibanisa iintsuku ezingaphezulu (umjikelo - 28) kumhla wokukhulelwa kunye nomhla wokukhulelwa.
Ndingafumana ixesha lokukhulelwa ukusukela ekukhulelweni okanye kwinkqubo yokukhulisa umntwana nge-IVF?
This tool works from the last menstrual period. For a known conception date, count 266 days forward; for IVF, the clinic adjusts for the embryo’s age at transfer (for example subtracting 5 days for a blastocyst).
API — sebenzisa le calculator ukusuka kwikhowudi
Nceda le khadi lemali njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo ezantsi njengeparameter yombuzo okanye i-JSON. Nantoni na oyenzayo isebenzisa okungagqibekanga okufanayo eli phepha ligqityiwe ngaphambili; iparameter engaziwayo yi 400, ayikho i zero ekhululekileyo. Funda i-API epheleleyo →
Incopho yesiphelo
GET https://calculator.free/api/v1/pregnancy-due-date/curl
curl "https://calculator.free/api/v1/pregnancy-due-date/?lmp=2026-08-09"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/pregnancy-due-date/?" + new URLSearchParams({
"lmp": "2026-08-09"
}));
const data = await r.json();
console.log(data.results);Results are estimates for general guidance only, not financial, medical or tax advice.