Due Date Countdown: How Many Days Until Your Baby Arrives?

Every week of pregnancy brings a new list: appointments, purchases, forms, and a day on the horizon that is hard to picture. A due date countdown turns that horizon into a number you can see, share, and plan around.

This guide shows you how to find your days left, how to turn them into a week-by-week plan for leave, the nursery, and your hospital bag, and how to cope when the date stays a moving target. You can start your due date countdown here with the free timer and keep this page open as your planner.

How many days until my due date?

Subtract today's date from your due date. The result is the number of days until your baby is due. A countdown timer does this automatically and updates each midnight. As an example, from 9 October 2026 to a due date of 12 March 2027 is 154 days, exactly 22 weeks.

Here is the sum for that example. Today is Friday, 9 October 2026, and the due date is Friday, 12 March 2027.

• Days left in October after today: 22
• November: 30
• December: 31
• January: 31
• February: 28 (2027 is not a leap year)
• March, up to the due date: 12

That adds up to 154 days, which is 22 weeks. Because a full pregnancy is counted as 40 weeks, a person with 22 weeks to go is 18 weeks pregnant today. Many people find the weeks more useful than the days, since appointments and milestones are measured in weeks.

One detail: most timers do not count the due date itself. A timer showing 154 days means the due date is 154 days away.

How is your due date worked out?

Most due dates are set at 40 weeks from the first day of your last menstrual period, which is about 280 days. An ultrasound can adjust the date, and your midwife or doctor confirms the final one. Treat it as a well-informed estimate, not a deadline.

Using the example above, the first day of the last period was 5 June 2026. Add 280 days and you reach 12 March 2027.

There is also a quick rule of thumb, sometimes called Naegele's rule: take the first day of your last period, add one year, subtract three months, and add seven days. For 5 June 2026 that gives 12 March 2027 again.

Two cases work differently:

• Irregular cycles: your scan measurements usually set the date instead of your last period.
• IVF: your clinic works out the date from the embryo transfer or egg retrieval, so use the date they give you.

Whatever your date, enter the one your midwife or doctor confirmed. If a later scan changes it, update your timer in a minute.

How do you set up a baby countdown timer?

Enter your due date into a countdown timer, name it, and save the page. A good baby countdown timer shows days, hours, and minutes, runs without an account, and lets you add a second timer for your last day at work. Share the link with your partner so you both see the same number.

Here is the quick workflow:

1. Open the free due date countdown on this site.
2. Enter your confirmed due date.
3. Give it a name you will enjoy seeing, such as "Meet the baby" or "Baby Lee, arriving soon".
4. Bookmark the page on your phone and computer.
5. Share the link with your partner, family, or close friends if you want company.

A few tips:

• Set a second timer for your last working day, so your handover has its own deadline.
• Count in weeks as well as days. At 154 days you have 22 weeks, which means 22 Sundays to tick off small jobs.
• Keep a flexible mindset. The timer shows the estimated date. Your baby may arrive before or after it.

What should you do and when? A week-by-week plan

Work backwards from the due date. Settle your leave and finances in the middle of pregnancy, set up the nursery before the third trimester gets heavy, and finish the practical preparations by 36 weeks. The table below uses a due date of 12 March 2027, with days left counted to that date.

Swap in your own dates and keep the weeks and days-left numbers as your guide.

A habit that works: every Sunday, glance at your days left and choose the next three jobs. Twenty-two weeks at three jobs a week gives you 66 finished tasks before your baby is due.

How do you plan your leave and work handover?

Check your leave and pay rules early, tell your employer in writing, and choose a last working day with room to spare, since babies often arrive before the due date. Count backwards from that day to set deadlines for your handover. Rules differ widely by country and employer, so confirm your own.

Here is a worked example. If your last working day is Friday, 12 February 2027 (28 days before the due date), you have 126 days from 9 October, or 18 weeks. That is about 90 working days before you subtract holidays.

A simple handover plan, counted back from that last day:

1. Eight weeks before (Friday, 18 December): List every project and task that will still be open while you are away.
2. Six weeks before (Friday, 1 January): Write a handover note for each one, with contacts, deadlines, and where files live.
3. Four weeks before (Friday, 15 January): Walk your cover through the notes and agree who decides what.
4. Last working day: Set your out-of-office message with a return plan, and leave on time.

If you are self-employed, tell your regular clients early and set a "reduced hours" date as well as a last day. If you are a partner planning leave, run the same sum and count back from the due date, not from the day the baby arrives.

How do you get the nursery and home ready?

Start with the places where the baby will sleep, feed, and be changed, and finish the big jobs before 32 weeks. Order large items first, since delivery can take weeks. Follow your health service's safe sleep guidance, and have your car seat checked for a correct fit before the birth.

Split the work into three rounds:

Round 1: The big items (28 to 32 weeks)

• A safe sleep space, such as a cot or bassinet, with a firm, fitted mattress
• A car seat (the one item you cannot leave the hospital without)
• A pram or sling
• Somewhere to store clothes and changing supplies

Round 2: Everyday supplies (32 to 35 weeks)

• Nappies or diapers, wipes, and cream
• Clothes in a few sizes, since newborns grow fast
• Muslins, blankets, and a few bottles or feeding supplies if you plan to use them
• A first-aid basics kit and a thermometer

Round 3: Make life easier (35 to 38 weeks)

• Freeze simple meals and stock the cupboard
• Clean the house and wash baby clothes
• List who is helping and when: friends, family, or neighbours

Buying second-hand can save a lot of money, but check the safety rules for sleep spaces and car seats, which should come with their full history.

What should be packed and ready before the baby arrives?

Have your hospital bag packed, your documents in one place, and your car seat installed by 36 weeks, which is 28 days before the due date in our example. Keep your phone charged and your route planned. A calm checklist beats a late-night scramble.

Here is a simple checklist:

• Documents: ID, birth plan notes, antenatal records, insurance details if relevant
• For you: comfortable clothes, toiletries, nursing or maternity pads, snacks, a long phone charger, a pillow from home
• For the baby: a going-home outfit, hat, blankets, and a newborn nappy pack
• For your birth partner: a change of clothes, snacks, and chargers
• At home: a list of phone numbers, someone to care for pets or other children, and a route to the hospital or birth centre with a back-up route

Put the bag by the door when you reach 36 weeks and add a note of what to grab last, such as your phone and charger.

What if your baby arrives early or late?

Most babies do not arrive on the exact due date. Treat the date as the middle of a window, roughly from three weeks before to two weeks after. Keep your bag packed from 36 weeks, and talk to your midwife or doctor about their plan if you pass 40 weeks.

Pregnancy is described in stages. Early term runs from 37 weeks to 38 weeks and 6 days, and full term runs from 39 weeks to 40 weeks and 6 days. This is why the plan above finishes the practical jobs by 36 weeks, not at 40.

The countdown can feel strange once you pass zero. Some ways to cope:

• Reset your target. Move your focus from "the due date" to "any day now" and keep a few relaxed plans in the diary.
• Rest. Sleep, short walks, and easy meals matter more than extra tasks.
• Check your support. Agree who answers the phone and who updates family, so you are not fielding questions all day.
• Know who to call. Keep your midwife or doctor's number where you can see it, along with the signs that mean you should get in touch.

How do you choose the right pregnancy countdown?

Choose a pregnancy countdown that is accurate, easy to read at a glance, and works without an account. It should let you adjust the due date if a scan changes it and run more than one timer. Keep the information you enter to a minimum: a date and a name are enough.

The common options and who they suit:

• Browser timer: free, instant, and shareable by link.
• Phone home-screen shortcut: good if you check your phone often.
• Pregnancy app: good if you want weekly updates, though you will probably want a separate timer for sharing.
• Wall chart or bump photo calendar: good for couples who like to mark each week by hand.

What to look for:

• The option to change the date easily
• A second timer for your last working day
• A clean display with no clutter
• No forced sign-up

What to avoid:

• Pages crowded with ads that slow everything down
• Timers that reset when you close the tab
• Tools that ask for health details beyond a date and a name

Start your due date countdown today

A due date countdown gives you a clear number, a planning rhythm, and something to look forward to each morning. With 154 days left in our example, you have time to sort your leave, prepare the nursery, and pack the bag without rushing.

Start your free due date countdown now, share it with the people supporting you, and check back here as the days tick down.