Click on the field to select the starting date.
Click on the field to select the end date.
The difference between the dates:
31 December 1978, Sunday and 21 December 2024, Saturday
45 years, 11 months, 22 days
or 552 months, or 2399 weeks, or 16792 days, or 403008 hours, or 24180480 minutes, or 1450828800 seconds

Sunday 31 December 1978 It is the 365 day of the year
Saturday 21 December 2024 It is the 365 day of the year
Total number of minutes: 24180480
Total number of hours: 403008
Total number of days: 16792
Total number of weeks: 2399
Total number of months: 552

How old am I if I was born on December 31 1978?

How old am I if I was born on December 31 1978? It is a commonly asked question. All of us want to know our age, regardless of whether we are young or old. To know how old we are is also needed in some cases. Somebody can ask us about it in school, work or in the office. So today is the day in which we are going to dispel all your doubts and give you an exact answer to the question of how old am I if I was born on December 31 1978.

In this article, you will learn how you can calculate your age – both on your own and with the use of a special tool. A little tidbit – you will see how to calculate your age with an accuracy of years, years and months and also years, months and days! So as you see, it will be such exact calculations. So it’s time to start.

I was born on December 31 1978. How old am I?

You were born on December 31 1978. We are sure that if somebody will ask you how old you are, you can answer the question. And we are pretty sure that the answer will be limited to years only. Are we right?

And of course, the answer like that is totally sufficient in most cases. People usually want to know the age given only in years, just for the general orientation. But have you ever wondered what your exact age is? It means the age given with an accuracy of years, months and even days? If not, you couldn't have chosen better.

Here you will finally see how to calculate your exact age and, of course, know the answer. What do you think – your exact age varies significantly from your age given in years only or not? Read the article and see if you are right!

How to calculate my age if I was born on December 31 1978?

Before we will move to the step by step calculations, we want to explain to you the whole process. It means, in this part we will show you how to calculate my age if I was born on December 31 1978 in a theoretical way.

To know how old you are if you were born on December 31 1978, you need to make calculations in three steps. Why are there so many steps? Of course, you can try to calculate it at once, but it will be a little complicated. It is so easier and quicker to divide the calculations into three. So let’s see these steps.

If you were born on December 31 1978, the first step will be calculating how many full years you are alive. What does ‘full years’ mean? To know the number of full years, you have to pay attention to the day and month of your birth. Only when this day and month have passed in the current year, you can say that you are one year older. If not, you can’t count this year as a full, and calculate full years only to the year before.

The second step is calculating the full, remaining months. It means the months which have left after calculating full years. Of course, this time, you also have to pay attention to your day of birth. You can count only these months, in which the date of your birth has passed. If in some month this date has not passed, just leave it for the third step.

The third step is to calculate the days which have left after calculating full years and full months. It means, these are days which you can’t count to full months in the second step. In some cases, when today is the same number as in the day in which you were born, you can have no days left to count.

So if you know how it looks in theory, let’s try this knowledge in practice. Down below, you will see these three steps with practical examples and finally know how old you are if you were born on December 31 1978.

Calculate full years since December 31 1978

The first step is calculating full years. So you were born on December 31 1978, and today is December 21 2024. First you need to do is checking if the 31th of December has passed this year. This is the 21th of December, so December was a few months before. It means you can calculate full years from the year of birth to the current year.

So how does the calculations look?

2024 - 1978 = 45

As you can see, you require subtracting the year of your birth from the current year. In this case, the result is 45. So it means that you are 45 years old now!

In some cases it will be sufficient to know your age only in years, but here you will know your exact age, so let’s move on.

Remaining months since December 31 1978 to now

The second step is to calculate full, remaining months. You were born on December 31 1978, today is December 21 2024. You know that there are 45 full years. So now let’s focus on months. To calculate only full months, you need to pay attention to the day of your birth. It’s 31th December. So now you require checking if 21th December has passed this year. If today is 21th of December, it means yes, 31th of December has passed. So you will calculate full months from December to December.

To make calculations, it will be better to mark months as numbers. December is the 12th month of the year, so mark it just as 11, and December is the 45th month of the year, so mark it just as 45. And now you can calculate the full, remaining months.

The calculations look as follows:

12 - 12 = 11

So you need to subtract the smaller number, in this case 11, from the bigger one, in this case 45. And then you have the result – it is 11 months. So now we know that if you were born on December 31 1978 you are 45 years and 11 months old. But what about days? Let’s check it!

Days left since December 31 1978 to now

The third, last step, is calculating the number of days which have left after previous calculations from the first and second step. There is no surprise, this time you also need to pay attention to the day of your birth. You were born on December 31 1978, today is December 21 2024. You have calculated full years, from 1978 to 2024, and full months, from December to December. It means you need to count only the days from December.

You were born on the 31th. Today is the 21th. So the calculations will be quite easy. You need to just subtract 31 from the 21 to see the number of days. The calculations will look like this:

So there are 22 full days left.

So to sum up – there are 45 full years, 11 full months and 22 days. So it means you are 45 years, 11 months and 22 days old exactly!

How Old Calculator dedicated to calculate how old you are if you were born on December 31 1978

Have you scrolled all parts containing calculations to know the easier way to know your age if you were born on December 31 1978?Don’t worry. We understand it. Here you are! We also prepared something for people who don’t like calculating on their own. Or just those who like to get the result as fast as possible, with almost no effort.

So what do we have for you? It is the how old calculator – online calculator dedicated to calculate how old you are if you were born on December 31 1978. It is, of course, math based. It contains the formulas, but you don’t see them. You only see the friendly-looking interface to use.

How can you use the how old calculator? You don’t need to have any special skills. Moreover, you don’t even need to do almost anything. You just need to enter the data, so you need to enter the date of your birth – day, month and year. Less than a second is totally sufficient for this tool to give you an exact result. Easy? Yup, as it looks!

There are more good pieces of information. The how old calculator is a free tool. It means you don’t have to pay anything to use it. Just go on the page and enjoy! You can use it on your smartphone, tablet or laptop. It will work as well on every device with an Internet connection.

So let’s try it on your own and see how fast and effortlessly you can get the answer to how old are you if you were born on December 31 1978.

Pick the best method to know your age for you

You have seen two different methods to know your age – first, calculations on your own, second, using the online calculator. It is time to pick the method for you. You could see how it works in both of them. You could try to calculate your exact age following our three steps and also use our app. So we are sure that now you have your favorite.

Both these methods are dedicated for different people and different needs. We gathered them in one article to show you the differences between them and give you the choice. So, if you need, read the previous paragraphs again, and enjoy calculations – regardless of whether you will make them on your own or using our how old calculator.

Do you feel old or young?

We are very curious what you think about your age now, when you finally know the exact numbers. Do you feel old or young? We are asking it because so many people, so many minds. All of you can feel the age differently, even if it is so similar or the same age! And we think it’s beautiful that all of us are different.

Regardless of feeling old or young, what do you feel more when you think about your age? What do you think about your life so far? We encourage you to make some kinds of summaries once in a while. Thanks to this, you will be able to check if your dream has come true, or maybe you need to fight more to reach your goal. Or maybe, after some thought, you will decide to change your life totally. Thinking about our life, analyzing our needs and wants – these things are extremely important to live happily.

Know your age anytime with How Old Calculator

We hope that our quite philosophical part of the article will be a cause for reflection for you. But let’s get back to the main topic, or, to be honest, the end of this topic. Because that’s the end of our article. Let’s sum up what you have learned today.

I was born on December 31 1978. How old am I? We are sure that such a question will not surprise you anymore. Now you can calculate your age, even exact age, in two different ways. You are able to make your own calculations and also know how to make it quicker and easier with the how old calculator.

It is time for your move. Let’s surprise your friends or family with the accuracy of your answers! Tell them how old you are with an accuracy of years, months and days!

Check also our other articles to check how old are your family members or friends. Pick their birthdate, see the explanation and get the results.

Invariant Language (Invariant Country) Sunday, 31 December 1978
Afrikaans Sondag 31 Desember 1978
Aghem tsuʔntsɨ 31 ndzɔ̀ŋèfwòo 1978
Akan Kwesida, 1978 Mumu-Ɔpɛnimba 31
Amharic 1978 ዲሴምበር 31, እሑድ
Arabic الأحد، 31 ديسمبر 1978
Assamese দেওবাৰ, 31 ডিচেম্বৰ, 1978
Asu Jumapili, 31 Desemba 1978
Asturian domingu, 31 d’avientu de 1978
Azerbaijani 31 dekabr 1978, bazar
Azerbaijani 31 декабр 1978, базар
Azerbaijani 31 dekabr 1978, bazar
Basaa ŋgwà nɔ̂y 31 Lìbuy li ńyèe 1978
Belarusian нядзеля, 31 снежня 1978 г.
Bemba Pa Mulungu, 31 Disemba 1978
Bena pa mulungu, 31 pa mwedzi gwa kumi na mbili 1978
Bulgarian неделя, 31 декември 1978 г.
Bambara kari 31 desanburu 1978
Bangla রবিবার, 31 ডিসেম্বর, 1978
Tibetan 1978 ཟླ་བ་བཅུ་གཉིས་པའི་ཚེས་31, གཟའ་ཉི་མ་
Breton Sul 31 Kerzu 1978
Bodo रबिबार, दिसेज्ब़र 31, 1978
Bosnian nedjelja, 31. decembar 1978.
Bosnian недјеља, 31. децембар 1978.
Bosnian nedjelja, 31. decembar 1978.
Catalan diumenge, 31 de desembre de 1978
Chakma 𑄢𑄧𑄝𑄨𑄝𑄢𑄴, 31 𑄓𑄨𑄥𑄬𑄟𑄴𑄝𑄧𑄢𑄴, 1978
Chechen 1978 декабрь 31, кӀира
Cebuano Domingo, Disyembre 31, 1978
Chiga Sande, 31 Okwaikumi na ibiri 1978
Cherokee ᎤᎾᏙᏓᏆᏍᎬ, ᎥᏍᎩᏱ 31, 1978
Central Kurdish 1978 کانونی یەکەم 31, یەکشەممە
Czech neděle 31. prosince 1978
Welsh Dydd Sul, 31 Rhagfyr 1978
Danish søndag den 31. december 1978
Taita Ituku ja jumwa, 31 Mori ghwa ikumi na iwi 1978
German Sonntag, 31. Dezember 1978
Zarma Alhadi 31 Deesanbur 1978
Lower Sorbian njeźela, 31. decembra 1978
Duala éti 31 eláŋgɛ́ 1978
Jola-Fonyi Dimas 31 Disambar 1978
Dzongkha གཟའ་ཟླ་བ་, སྤྱི་ལོ་1978 ཟླ་བཅུ་གཉིས་པ་ ཚེས་31
Embu Kiumia, 31 Mweri wa ikũmi na Kaĩrĩ 1978
Ewe kɔsiɖa, dzome 31 lia 1978
Greek Κυριακή, 31 Δεκεμβρίου 1978
English Sunday, December 31, 1978
Esperanto dimanĉo, 31-a de decembro 1978
Spanish domingo, 31 de diciembre de 1978
Estonian pühapäev, 31. detsember 1978
Basque 1978(e)ko abenduaren 31(a), igandea
Ewondo sɔ́ndɔ 31 ngɔn awóm ai bɛ̌ 1978
Persian 1357 دی 10, یکشنبه
Fulah dewo 31 bowte 1978
Fulah dewo 31 bowte 1978
Finnish sunnuntai 31. joulukuuta 1978
Filipino Linggo, Disyembre 31, 1978
Faroese sunnudagur, 31. desember 1978
French dimanche 31 décembre 1978
Friulian domenie 31 di Dicembar dal 1978
Western Frisian snein 31 Desimber 1978
Irish Dé Domhnaigh 31 Nollaig 1978
Scottish Gaelic DiDòmhnaich, 31mh dhen Dùbhlachd 1978
Galician Domingo, 31 de decembro de 1978
Swiss German Sunntig, 31. Dezämber 1978
Gujarati રવિવાર, 31 ડિસેમ્બર, 1978
Gusii Chumapiri, 31 Disemba 1978
Manx 1978 Mee ny Nollick 31, Jedoonee
Hausa Lahadi 31 Disamba, 1978
Hawaiian Lāpule, 31 Kekemapa 1978
Hebrew יום ראשון, 31 בדצמבר 1978
Hindi रविवार, 31 दिसंबर 1978
Croatian nedjelja, 31. prosinca 1978.
Upper Sorbian njedźela, 31. decembra 1978
Hungarian 1978. december 31., vasárnap
Armenian 1978 թ. դեկտեմբերի 31, կիրակի
Interlingua dominica le 31 de decembre 1978
Indonesian Minggu, 31 Desember 1978
Igbo Sọndee, 31 Disemba 1978
Sichuan Yi 1978 ꊰꑋꆪ 31, ꑭꆏꑍ
Icelandic sunnudagur, 31. desember 1978
Italian domenica 31 dicembre 1978
Japanese 1978年12月31日日曜日
Ngomba Sɔ́ndi, 1978 Pɛsaŋ Ntsɔ̌ppá 31
Machame Jumapilyi, 31 Desemba 1978
Javanese Ahad, 31 Desember 1978
Georgian კვირა, 31 დეკემბერი, 1978
Kabyle Yanass 31 Duǧembeṛ 1978
Kamba Wa kyumwa, 31 Mwai wa ĩkumi na ilĩ 1978
Makonde Liduva lyapili, 31 Mwedi wa Nnyano na Nnyano na M 1978
Kabuverdianu dumingu, 31 di Dizenbru di 1978
Koyra Chiini Alhadi 31 Deesanbur 1978
Kikuyu Kiumia, 31 Ndithemba 1978
Kazakh 1978 ж. 31 желтоқсан, жексенбі
Kako sɔndi 31 ɓulɓusɛ 1978
Kalaallisut 1978 decembarip 31, sapaat
Kalenjin Kotisap, 31 Kipsuunde nebo aeng’ 1978
Khmer អាទិត្យ 31 ធ្នូ 1978
Kannada ಭಾನುವಾರ, ಡಿಸೆಂಬರ್ 31, 1978
Korean 1978년 12월 31일 일요일
Konkani आयतार 31 डिसेंबर 1978
Kashmiri اَتھوار, دسمبر 31, 1978
Shambala Jumaapii, 31 Desemba 1978
Bafia sɔ́ndǝ 31 ŋwíí akǝ ntɛk di bɛ́ɛ 1978
Colognian Sunndaach, dä 31. Dezämber 1978
Kurdish 1978 berfanbarê 31, yekşem
Cornish 1978 mis Kevardhu 31, dy Sul
Kyrgyz 1978-ж., 31-декабрь, жекшемби
Langi Jumapíiri, 31 Kʉsasatʉ 1978
Luxembourgish Sonndeg, 31. Dezember 1978
Ganda Sabbiiti, 31 Desemba 1978
Lakota Aŋpétuwakȟaŋ, Tȟahékapšuŋ Wí 31, 1978
Lingala eyenga 31 sánzá ya zómi na míbalé 1978
Lao ວັນອາທິດ ທີ 31 ທັນວາ ຄ.ສ. 1978
Northern Luri AP 1357 Dey 10, Sun
Lithuanian 1978 m. gruodžio 31 d., sekmadienis
Luba-Katanga Lumingu 31 Ciswà 1978
Luo Jumapil, 31 Dwe mar Apar gi ariyo 1978
Luyia Jumapiri, 31 Desemba 1978
Latvian Svētdiena, 1978. gada 31. decembris
Masai Jumapílí, 31 Ntʉ́ŋʉ́s 1978
Meru Kiumia, 31 Dicemba 1978
Morisyen dimans 31 desam 1978
Malagasy Alahady 31 Desambra 1978
Makhuwa-Meetto Sabato, 31 Mweri wo kumi na yel’li 1978
Metaʼ Aneg 1, 1978 iməg krizmed 31
Maori Rātapu, 31 Hakihea 1978
Macedonian недела, 31 декември 1978
Malayalam 1978, ഡിസംബർ 31, ഞായറാഴ്‌ച
Mongolian 1978 оны арван хоёрдугаар сарын 31, Ням гараг
Marathi रविवार, 31 डिसेंबर, 1978
Malay Ahad, 31 Disember 1978
Maltese Il-Ħadd, 31 ta’ Diċembru 1978
Mundang Com’yakke 31 Fĩi Yuru 1978
Burmese 1978၊ ဒီဇင်ဘာ 31၊ တနင်္ဂနွေ
Mazanderani AP 1357 Dey 10, Sun
Nama Sontaxtsees, 31 Hôasoreǁkhâb 1978
Norwegian Bokmål søndag 31. desember 1978
North Ndebele Sonto, 31 Mpalakazi 1978
Low German 1978 M12 31, Sun
Nepali 1978 डिसेम्बर 31, आइतबार
Dutch zondag 31 december 1978
Kwasio sɔ́ndɔ 31 krísimin 1978
Norwegian Nynorsk søndag 31. desember 1978
Ngiemboon lyɛʼɛ́ sẅíŋtè , lyɛ̌ʼ 31 na saŋ lùm, 1978
Nuer Cäŋ kuɔth 31 Tio̱p in di̱i̱t 1978
Nyankole Sande, 31 Okwaikumi na ibiri 1978
Oromo Dilbata, Muddee 31, 1978
Odia ରବିବାର, ଡିସେମ୍ବର 31, 1978
Ossetic Хуыцаубон, 31 декабры, 1978 аз
Punjabi ਐਤਵਾਰ, 31 ਦਸੰਬਰ 1978
Punjabi اتوار, 31 دسمبر 1978
Punjabi ਐਤਵਾਰ, 31 ਦਸੰਬਰ 1978
Polish niedziela, 31 grudnia 1978
Pashto يونۍ د AP 1357 د مرغومی 10
Portuguese domingo, 31 de dezembro de 1978
Quechua Domingo, 31 Diciembre, 1978
Romansh dumengia, ils 31 da december 1978
Rundi Ku w’indwi 31 Kigarama 1978
Romanian duminică, 31 decembrie 1978
Rombo Ijumapili, 31 Mweri wa ikumi na mbili 1978
Russian воскресенье, 31 декабря 1978 г.
Kinyarwanda 1978 Ukuboza 31, Ku cyumweru
Rwa Jumapilyi, 31 Desemba 1978
Sakha 1978 сыл ахсынньы 31 күнэ, баскыһыанньа
Samburu Mderot ee are, 31 Lapa le tomon waare 1978
Sangu Mulungu, 31 Muhaano 1978
Sindhi 1978 ڊسمبر 31, آچر
Northern Sami 1978 juovlamánnu 31, sotnabeaivi
Sena Dimingu, 31 de Decembro de 1978
Koyraboro Senni Alhadi 31 Deesanbur 1978
Sango Bikua-ôko 31 Kakauka 1978
Tachelhit ⴰⵙⴰⵎⴰⵙ 31 ⴷⵓⵊⴰⵏⴱⵉⵔ 1978
Tachelhit asamas 31 dujanbir 1978
Tachelhit ⴰⵙⴰⵎⴰⵙ 31 ⴷⵓⵊⴰⵏⴱⵉⵔ 1978
Sinhala 1978 දෙසැම්බර් 31, ඉරිදා
Slovak nedeľa 31. decembra 1978
Slovenian nedelja, 31. december 1978
Inari Sami pasepeivi, juovlâmáánu 31. 1978
Shona 1978 Zvita 31, Svondo
Somali Axad, Bisha Laba iyo Tobnaad 31, 1978
Albanian e diel, 31 dhjetor 1978
Serbian недеља, 31. децембар 1978.
Serbian недеља, 31. децембар 1978.
Serbian nedelja, 31. decembar 1978.
Swedish söndag 31 december 1978
Swahili Jumapili, 31 Desemba 1978
Tamil ஞாயிறு, 31 டிசம்பர், 1978
Telugu 31, డిసెంబర్ 1978, ఆదివారం
Teso Nakaejuma, 31 Opoo 1978
Tajik Якшанбе, 31 Декабр 1978
Thai วันอาทิตย์ที่ 31 ธันวาคม พ.ศ. 2521
Tigrinya ሰንበት፣ 31 ታሕሳስ መዓልቲ 1978 ዓ/ም
Turkmen 31 dekabr 1978 Ýekşenbe
Tongan Sāpate 31 Tīsema 1978
Turkish 31 Aralık 1978 Pazar
Tatar 31 декабрь, 1978 ел, якшәмбе
Tasawaq Alhadi 31 Deesanbur 1978
Central Atlas Tamazight Asamas, 31 Dujanbir 1978
Uyghur 1978 31-دېكابىر، يەكشەنبە
Ukrainian неділя, 31 грудня 1978 р.
Urdu اتوار، 31 دسمبر، 1978
Uzbek yakshanba, 31-dekabr, 1978
Uzbek AP 1357 Dey 10, یکشنبه
Uzbek якшанба, 31 декабр, 1978
Uzbek yakshanba, 31-dekabr, 1978
Vai ꕞꕌꔵ, 31 ꖨꖕ ꕪꕴ ꗏꖺꕮꕊ 1978
Vai lahadi, 31 luukao lɔma 1978
Vai ꕞꕌꔵ, 31 ꖨꖕ ꕪꕴ ꗏꖺꕮꕊ 1978
Vietnamese Chủ Nhật, 31 tháng 12, 1978
Vunjo Jumapilyi, 31 Desemba 1978
Walser Sunntag, 31. Chrištmánet 1978
Wolof Dibéer, 31 Des, 1978
Xhosa 1978 Disemba 31, Cawe
Soga Sabiiti, 31 Desemba 1978
Yangben sɔ́ndiɛ 31 pilɔndɔ́ 1978
Yiddish זונטיק, 31טן דעצעמבער 1978
Yoruba Àìkú, 31 Ọ̀pẹ 1978
Cantonese 1978年12月31日 星期日
Cantonese 1978年12月31日星期日
Cantonese 1978年12月31日 星期日
Standard Moroccan Tamazight ⴰⵙⴰⵎⴰⵙ 31 ⴷⵓⵊⴰⵏⴱⵉⵔ 1978
Chinese 1978年12月31日星期日
Chinese 1978年12月31日星期日
Chinese 1978年12月31日 星期日
Zulu ISonto, Disemba 31, 1978