Due Date Calculator
Due Date Calculator – Find Out When Your Baby Is Due
Wondering when your little one will arrive? Use our free Due Date Calculator to find your estimated delivery date in seconds — no signups, no data stored.
Just simple, safe answers when you need them most.
What Is a Due Date Calculator?
A due date calculator helps you estimate the day your baby might be born based on:
- The first day of your last menstrual period (LMP), or
- Your conception or ovulation date (if known)
This tool uses standard pregnancy timelines — about 280 days (40 weeks) from your LMP — to calculate your estimated due date.
How to Use the Calculator
- Select the first day of your last period
- Click Calculate
- Instantly see:
- Your estimated due date
- How many weeks pregnant you are
- Your current trimester
That’s it! No login, no email, no personal details required.
Why It Matters
Knowing your due date helps you:
- Schedule doctor visits and ultrasounds
- Track your baby’s growth each week
- Prepare for each trimester’s milestones
- Plan maternity leave and birth preferences
Whether you're newly pregnant or tracking late cycles, this calculator gives you a clear view of what’s ahead.
Did You Know?
- Only about 5% of babies are born exactly on their due date
- Most births happen between 37 and 42 weeks
- Your doctor may adjust your due date after an early ultrasound
Bonus Tip:
If your cycles are irregular or longer than 35 days, your due date might shift slightly. Use this tool as a general estimate and always confirm with your OB or midwife.
FAQs About Due Dates
Can I calculate my due date if I know my conception day?
Yes! Just subtract 266 days from your conception date — or use our calculator with that info instead of your LMP.
Is this tool accurate?
It’s based on medical guidelines and works best if your cycles are regular. For precise dating, your healthcare provider may recommend an early ultrasound.
Can this tell me how far along I am?
Yes! Once you input your last period, it shows how many weeks and days pregnant you are today.
