Calcolatore Gravidanza

Stima la data del parto, la data del concepimento e la settimana corrente di gravidanza. Calcolatore di gravidanza online gratuito.

Cos'e' Calcolatore Gravidanza?

A pregnancy calculator estimates your due date and tracks important milestones throughout your pregnancy journey. Whether you've just discovered you're expecting or you're planning ahead, this calculator helps you understand where you are in your pregnancy and what to expect in the coming weeks.

Pregnancy is typically calculated as 40 weeks (280 days) from the first day of your last menstrual period (LMP), not from the date of conception. This is because the exact date of conception is often unknown, but most women can recall when their last period started. The calculator also shows your current trimester, weeks pregnant, and key developmental milestones for your baby.

Formula

Due Date = First day of LMP + 280 days (40 weeks)

Alternatively: Due Date = LMP + 7 days - 3 months + 1 year (Naegele's Rule)

Conception date is typically ~2 weeks after LMP

Trimester 1: Weeks 1-12

Trimester 2: Weeks 13-27

Trimester 3: Weeks 28-40+

Come Calcolare

Enter the first day of your last menstrual period.
Alternatively, enter your estimated conception date.
View your estimated due date.
Check your current week of pregnancy and trimester.
See key milestones and developmental stages.

Esempio

If your last menstrual period started on March 1, 2025, your estimated due date is December 5, 2025 (March 1 + 280 days). On June 1, 2025, you would be approximately 13 weeks pregnant, entering your second trimester. Your conception likely occurred around March 15, 2025.

Vantaggi Principali

Get accurate pregnancy calculator results instantly
Save time with pregnancy calculator calculations
Prendi decisioni informate con dati chiari
Gratuito su qualsiasi dispositivo, senza download

Errori Comuni da Evitare

Utilizzare input inaccurati
Ignorare fattori chiave
Interpretare male i risultati

Consigli Pro

Ricontrolla gli input per precisione
Esegui più scenari
Combina con altri strumenti

Termini Chiave Spiegati

Input: I valori che fornisci
Output: Risultati calcolati
Formula: Metodo utilizzato
Risultato: Risposta calcolata

Quando Usare Questo Calcolatore

For quick pregnancy calculator
Comparing pregnancy calculator options
Understanding pregnancy calculator impact

Casi d'Uso Comuni

Estimating your baby's due date
Tracking pregnancy progress week by week
Planning maternity leave and baby preparations
Understanding developmental milestones during pregnancy

Domande Frequenti

How accurate is the due date calculation?

Only about 5% of babies are born on their exact due date. Most deliveries occur between 37-42 weeks. The due date is an estimate, and your healthcare provider may adjust it based on ultrasound measurements.

Why is pregnancy counted from the last period?

Most women know when their period started but not when conception occurred. Counting from the LMP provides a consistent starting point, even though conception typically happens about 2 weeks later.

What if I have irregular cycles?

With irregular cycles, the LMP-based calculation may be less accurate. An early ultrasound (8-12 weeks) provides a more reliable due date estimate. Consult your healthcare provider for personalized guidance.

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