Calculadora de Data Provável do Parto
Estime sua data de parto com base no seu último período menstrual (UPM). Usa a regra de Naegele: UPM + 280 dias.
Data Estimada do Parto
Semana
Semana Atual
w d
Dias Restantes
Trimestre
Concepção Est.
Esta calculadora usa a regra de Naegele (UPM + 280 dias). As datas reais de parto podem variar. Por favor, consulte seu médico para estimativas precisas.
Frequently Asked Questions
How is a pregnancy due date calculated?
The due date is calculated by adding 280 days (40 weeks) to the first day of the last menstrual period (LMP). This is known as Naegele's rule. Only about 5% of babies are born exactly on their due date; most arrive within two weeks before or after.
What are the three trimesters of pregnancy?
The first trimester spans weeks 1–12, the second trimester covers weeks 13–26, and the third trimester is weeks 27–40. Each trimester has distinct developmental milestones and different prenatal care recommendations.
How accurate is a due date calculator?
A due date based on LMP is an estimate. Only 4–5% of babies arrive on the exact due date. An ultrasound in the first trimester can provide a more accurate estimate, typically within 5–7 days. About 80% of babies are born between weeks 38 and 42.