Are your children’s vaccines up to date?

Set a reminder

Please or to access all these features

Parenting

For free parenting resources please check out the Early Years Alliance's Family Corner.

How many months is 16 week old baby / How do u calculate how many months old ur baby is?

69 replies

mamtojaz · 16/06/2022 22:13

I have this running debate with friends and family on how everyone calculates their babies number of months they are. Today jaz ( my first baby ) is 16 weeks old, i assumed that meant she was 4 months old however my friend who has a baby born 3 days after mine ( 27th feb ) goes by the 27th of every month. i couldn't find much online if there was a right or wrong answer so i thot id pop on here for more opinions. Do you go by the same date of each month, or the weeks? ( apologies if that didn't make much sense i'm still suffering from severe baby brain!! )

OP posts:
Are your children’s vaccines up to date?
FLOWER1982 · 16/06/2022 22:14

😂

Kerberos · 16/06/2022 22:16

Unless you are planning to add a 13th month to the year or celebrate her birthday early I'd switch to calendar months now.

GreenIsle · 16/06/2022 22:22

I have this same query a girl I know was saying her baby is 6 months old say yesterday and she goes by the exact date each month. Technically by weeks this baby is older. She stated how she was worried about weaning early (but I was like your baby is over 6 months already Hmm then She bragged about how well he was sitting up at just under 6 months (well no he's over 6 months). It doesn't even out until they turn 1.

Interested in this thread?

Then you might like threads about these subjects:

Anotherdayanotherdollar · 16/06/2022 22:26

Does it really matter?? Say 16 weeks if you want to count in weeks. Almost 4 months if you want to count months? Weeks and months are both defined periods, it's not subjective!

AllThatFancyPaintsAsFair · 16/06/2022 22:28

Eh?

Do you not know how the calendar works? There's not some kind of special one used for the age of babies

Is this a serious question 😂

IstayedForTheFeminism · 16/06/2022 22:29

By the date. When your baby is 1 year/12 months/52 weeks old it will be 24th Feb (or whatever date she was born)

NancyDrooo · 16/06/2022 22:31

GreenIsle · 16/06/2022 22:22

I have this same query a girl I know was saying her baby is 6 months old say yesterday and she goes by the exact date each month. Technically by weeks this baby is older. She stated how she was worried about weaning early (but I was like your baby is over 6 months already Hmm then She bragged about how well he was sitting up at just under 6 months (well no he's over 6 months). It doesn't even out until they turn 1.

So how many weeks old is her six month old baby?

Clevs · 16/06/2022 22:31

Just go by the date - born on 27th Sept the baby will be one month old on 27th Oct, two months old on 27th November etc.

There aren't exactly 4 weeks in every month so 16 weeks might not be exactly 4 months.

oviraptor21 · 16/06/2022 22:32

Weird.
If your baby is born today on 16th June then they will be four months on 16th October and six months on 16th December. What's so complicated about that?

Namechanger355 · 16/06/2022 22:34

mamtojaz · 16/06/2022 22:13

I have this running debate with friends and family on how everyone calculates their babies number of months they are. Today jaz ( my first baby ) is 16 weeks old, i assumed that meant she was 4 months old however my friend who has a baby born 3 days after mine ( 27th feb ) goes by the 27th of every month. i couldn't find much online if there was a right or wrong answer so i thot id pop on here for more opinions. Do you go by the same date of each month, or the weeks? ( apologies if that didn't make much sense i'm still suffering from severe baby brain!! )

Given there aren’t exactly 28 days (4 weeks of 7 days) in one month, it’s obvious that 16 weeks doesn’t equal 4 months

you count in months if you want to use months - and count in weeks if you want to use weeks

AllThatFancyPaintsAsFair · 16/06/2022 22:34

There aren't exactly 4 weeks in every month so 16 weeks might not be exactly 4 months

There's only exactly four weeks in 1 month, do primary schools not teach this anymore? 😁

BasementIdeas · 16/06/2022 22:36

GreenIsle · 16/06/2022 22:22

I have this same query a girl I know was saying her baby is 6 months old say yesterday and she goes by the exact date each month. Technically by weeks this baby is older. She stated how she was worried about weaning early (but I was like your baby is over 6 months already Hmm then She bragged about how well he was sitting up at just under 6 months (well no he's over 6 months). It doesn't even out until they turn 1.

I don’t get this at all? The baby is exactly the same age if you count in weeks, months or hours!

if her baby was born on 15th Dec 2021 then she was 6 months old yesterday. If she was born on any other date throughout time then she was not 6 months old yesterday

Svara · 16/06/2022 22:38

GreenIsle · 16/06/2022 22:22

I have this same query a girl I know was saying her baby is 6 months old say yesterday and she goes by the exact date each month. Technically by weeks this baby is older. She stated how she was worried about weaning early (but I was like your baby is over 6 months already Hmm then She bragged about how well he was sitting up at just under 6 months (well no he's over 6 months). It doesn't even out until they turn 1.

What do you mean by weeks the baby is older? Depending on the time of year then six months date to date could be 26 weeks and two days, when usually six months is considered equivalent to 26 weeks (even though a year is 52 weeks and a day or two), is that what you mean?

Orangenight · 16/06/2022 22:39

If she’s going by the exact date (rather than weeks) surely she is right about when her baby was 6 months old!?

Orangenight · 16/06/2022 22:40

I meant to quote @GreenIsle

CandyLeBonBon · 16/06/2022 22:42

AllThatFancyPaintsAsFair · 16/06/2022 22:34

There aren't exactly 4 weeks in every month so 16 weeks might not be exactly 4 months

There's only exactly four weeks in 1 month, do primary schools not teach this anymore? 😁

And even that's not true as it's only 3 in every 4 Februaries!

Svara · 16/06/2022 22:45

BasementIdeas · 16/06/2022 22:36

I don’t get this at all? The baby is exactly the same age if you count in weeks, months or hours!

if her baby was born on 15th Dec 2021 then she was 6 months old yesterday. If she was born on any other date throughout time then she was not 6 months old yesterday

Yes, not getting it either. If the birthday was 15th December then the baby would be 26 weeks exactly on 15th June, so technically just under six months.

AllThatFancyPaintsAsFair · 16/06/2022 22:47

CandyLeBonBon · 16/06/2022 22:42

And even that's not true as it's only 3 in every 4 Februaries!

I decided not to mention leap years for fear of blowing the minds of the people who don't know how weeks and months work 😂

User76745333 · 16/06/2022 22:48

Erm, weeks and months are different things. Months have different numbers of days depending on the month. Hth

NancyDrooo · 16/06/2022 22:48

Does the previous poster mean each time 4 weeks passes the baby is another month older? So at 24 weeks was aged 6 months?

What happens when they get up to 48 weeks, is that 12 months, is that their birthday, or do we have a special 13th month?

I’m baffled why people think 4 weeks is the same as a month.

TreacheryPepper · 16/06/2022 22:50

You'll stop counting in weeks soon anyway. Not sure why you're getting so many arsey responses here though.

twoandcooplease · 16/06/2022 22:51

I'm really glad you posted this you're not the only one confused

I was counting ds in weeks firstly. When he was 12 weeks I was suing he was 3 months. Then I realised he still had 3 weeks to go. Honestly I think I was a bit woo-woo with the baby brain for a while then. I now understand that on the 24th he will be 9 MONTHS and the next 24th he'll go up again Blush

SunflowerGardens · 16/06/2022 22:52

To be fair to OP, this can cause a bit of confusion when you're told to wean at 6 months and you have people who are terrified to wean even a day before and counting down to that EXACT day but they've been counting in weeks and some people starting weaning at 17 weeks so then they get the fear that they might accidentally wean early or late and panic.

But yes as others have said...calendar months!

Svara · 16/06/2022 22:52

Does the previous poster mean each time 4 weeks passes the baby is another month older? So at 24 weeks was aged 6 months?
Maybe, though the person they are talking about is the one who is right, 24 weeks is only 5 and a half months!

AllThatFancyPaintsAsFair · 16/06/2022 22:53

Svara · 16/06/2022 22:45

Yes, not getting it either. If the birthday was 15th December then the baby would be 26 weeks exactly on 15th June, so technically just under six months.

How can 15 December to 15 Jume be less than 6 months?

I'm desparing now at the ignornace of basic stuff