How old am I if I was born on December 18 2009? 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 18 2009.

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 18 2009. How old am I?

You were born on December 18 2009. 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 18 2009?

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 18 2009 in a theoretical way**.

**To know how old you are if you were born on December 18 2009, 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 18 2009, 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 18 2009.

## Calculate full years since December 18 2009

The first step is calculating full years. So you were born on December 18 2009, and today is September 27 2022. First you need to do is checking if the 18th of December has passed this year. This is the 27th of September, 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?

2022 - 2009 = 12

As you can see, you require subtracting the year of your birth from the current year. In this case, the result is 12. **So it means that you are 12 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 18 2009 to now

The second step is to calculate full, remaining months. You were born on December 18 2009, today is September 27 2022. You know that there are 12 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 18th December. So now you require checking if 27th September has passed this year. If today is 27th of September, it means yes, 18th of September has passed. So you will calculate full months from December to September.

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 9, and September is the 12th month of the year, so mark it just as 12. And now you can calculate the full, remaining months.

So you need to subtract the smaller number, in this case 9, from the bigger one, in this case 12. And then you have the result – it is 9 months. **So now we know that if you were born on December 18 2009 you are 12 years and 9 months old. **But what about days? Let’s check it!

## Days left since December 18 2009 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 18 2009, today is September 27 2022. You have calculated full years, from 2009 to 2022, and full months, from December to September. It means you need to count only the days from September.

You were born on the 18th. Today is the 27th. So the calculations will be quite easy. You need to just subtract 18 from the 27 to see the number of days. The calculations will look like this:

So there are 10 full days left.

So to sum up – there are 12 full years, 9 full months and 10 days.** So it means you are 12 years, 9 months and 10 days old exactly!**

## How Old Calculator dedicated to calculate how old you are if you were born on December 18 2009

Have you scrolled all parts containing calculations to know the easier way to know your age if you were born on December 18 2009?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 18 2009. 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 18 2009.

## 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 18 2009. 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) | Friday, 18 December 2009 |

Afrikaans | Vrydag 18 Desember 2009 |

Aghem | tsuʔughɨ̂m 18 ndzɔ̀ŋèfwòo 2009 |

Akan | Fida, 2009 Mumu-Ɔpɛnimba 18 |

Amharic | 2009 ዲሴምበር 18, ዓርብ |

Arabic | الجمعة، 18 ديسمبر 2009 |

Assamese | শুক্ৰবাৰ, 18 ডিচেম্বৰ, 2009 |

Asu | Ijumaa, 18 Desemba 2009 |

Asturian | vienres, 18 d’avientu de 2009 |

Azerbaijani | 18 dekabr 2009, cümə |

Azerbaijani | 18 декабр 2009, ҹүмә |

Azerbaijani | 18 dekabr 2009, cümə |

Basaa | ŋgwà kɔɔ 18 Lìbuy li ńyèe 2009 |

Belarusian | пятніца, 18 снежня 2009 г. |

Bemba | Palichisano, 18 Disemba 2009 |

Bena | pa hihanu, 18 pa mwedzi gwa kumi na mbili 2009 |

Bulgarian | петък, 18 декември 2009 г. |

Bambara | juma 18 desanburu 2009 |

Bangla | শুক্রবার, 18 ডিসেম্বর, 2009 |

Tibetan | 2009 ཟླ་བ་བཅུ་གཉིས་པའི་ཚེས་18, གཟའ་པ་སངས་ |

Breton | Gwener 18 Kerzu 2009 |

Bodo | सुखुरबार, दिसेज्ब़र 18, 2009 |

Bosnian | petak, 18. decembar 2009. |

Bosnian | петак, 18. децембар 2009. |

Bosnian | petak, 18. decembar 2009. |

Catalan | divendres, 18 de desembre de 2009 |

Chakma | 𑄥𑄪𑄇𑄴𑄇𑄮𑄢𑄴𑄝𑄢𑄴, 18 𑄓𑄨𑄥𑄬𑄟𑄴𑄝𑄧𑄢𑄴, 2009 |

Chechen | 2009 декабрь 18, пӀераска |

Cebuano | Biyernes, Disyembre 18, 2009 |

Chiga | Orwakataano, 18 Okwaikumi na ibiri 2009 |

Cherokee | ᏧᎾᎩᎶᏍᏗ, ᎥᏍᎩᏱ 18, 2009 |

Central Kurdish | 2009 کانونی یەکەم 18, ھەینی |

Czech | pátek 18. prosince 2009 |

Welsh | Dydd Gwener, 18 Rhagfyr 2009 |

Danish | fredag den 18. december 2009 |

Taita | Kuramuka kasanu, 18 Mori ghwa ikumi na iwi 2009 |

German | Freitag, 18. Dezember 2009 |

Zarma | Alzuma 18 Deesanbur 2009 |

Lower Sorbian | pětk, 18. decembra 2009 |

Duala | ɗónɛsú 18 eláŋgɛ́ 2009 |

Jola-Fonyi | Arjuma 18 Disambar 2009 |

Dzongkha | གཟའ་སྤེན་པ་, སྤྱི་ལོ་2009 ཟླ་བཅུ་གཉིས་པ་ ཚེས་18 |

Embu | Njumaa, 18 Mweri wa ikũmi na Kaĩrĩ 2009 |

Ewe | fiɖa, dzome 18 lia 2009 |

Greek | Παρασκευή, 18 Δεκεμβρίου 2009 |

English | Friday, December 18, 2009 |

Esperanto | vendredo, 18-a de decembro 2009 |

Spanish | viernes, 18 de diciembre de 2009 |

Estonian | reede, 18. detsember 2009 |

Basque | 2009(e)ko abenduaren 18(a), ostirala |

Ewondo | fúladé 18 ngɔn awóm ai bɛ̌ 2009 |

Persian | 1388 آذر 27, جمعه |

Fulah | mawnde 18 bowte 2009 |

Fulah | mawnde 18 bowte 2009 |

Finnish | perjantai 18. joulukuuta 2009 |

Filipino | Biyernes, Disyembre 18, 2009 |

Faroese | fríggjadagur, 18. desember 2009 |

French | vendredi 18 décembre 2009 |

Friulian | vinars 18 di Dicembar dal 2009 |

Western Frisian | freed 18 Desimber 2009 |

Irish | Dé hAoine 18 Nollaig 2009 |

Scottish Gaelic | DihAoine, 18mh dhen Dùbhlachd 2009 |

Galician | Venres, 18 de decembro de 2009 |

Swiss German | Friitig, 18. Dezämber 2009 |

Gujarati | શુક્રવાર, 18 ડિસેમ્બર, 2009 |

Gusii | Ichuma, 18 Disemba 2009 |

Manx | 2009 Mee ny Nollick 18, Jeheiney |

Hausa | Jummaʼa 18 Disamba, 2009 |

Hawaiian | Poʻalima, 18 Kekemapa 2009 |

Hebrew | יום שישי, 18 בדצמבר 2009 |

Hindi | शुक्रवार, 18 दिसंबर 2009 |

Croatian | petak, 18. prosinca 2009. |

Upper Sorbian | pjatk, 18. decembra 2009 |

Hungarian | 2009. december 18., péntek |

Armenian | 2009 թ. դեկտեմբերի 18, ուրբաթ |

Interlingua | venerdi le 18 de decembre 2009 |

Indonesian | Jumat, 18 Desember 2009 |

Igbo | Fraịdee, 18 Disemba 2009 |

Sichuan Yi | 2009 ꊰꑋꆪ 18, ꆏꊂꉬ |

Icelandic | föstudagur, 18. desember 2009 |

Italian | venerdì 18 dicembre 2009 |

Japanese | 2009年12月18日金曜日 |

Ngomba | Fɛlâyɛdɛ, 2009 Pɛsaŋ Ntsɔ̌ppá 18 |

Machame | Ijumaa, 18 Desemba 2009 |

Javanese | Jumat, 18 Desember 2009 |

Georgian | პარასკევი, 18 დეკემბერი, 2009 |

Kabyle | Sḍisass 18 Duǧembeṛ 2009 |

Kamba | Wa katano, 18 Mwai wa ĩkumi na ilĩ 2009 |

Makonde | Liduva lyannyano na mavili, 18 Mwedi wa Nnyano na Nnyano na M 2009 |

Kabuverdianu | sesta-fera, 18 di Dizenbru di 2009 |

Koyra Chiini | Aljuma 18 Deesanbur 2009 |

Kikuyu | Njumaa, 18 Ndithemba 2009 |

Kazakh | 2009 ж. 18 желтоқсан, жұма |

Kako | vaŋdɛrɛdi 18 ɓulɓusɛ 2009 |

Kalaallisut | 2009 decembarip 18, tallimanngorneq |

Kalenjin | Komuut, 18 Kipsuunde nebo aeng’ 2009 |

Khmer | សុក្រ 18 ធ្នូ 2009 |

Kannada | ಶುಕ್ರವಾರ, ಡಿಸೆಂಬರ್ 18, 2009 |

Korean | 2009년 12월 18일 금요일 |

Konkani | शुक्रार 18 डिसेंबर 2009 |

Kashmiri | جُمہ, دسمبر 18, 2009 |

Shambala | Ijumaa, 18 Desemba 2009 |

Bafia | júmbá 18 ŋwíí akǝ ntɛk di bɛ́ɛ 2009 |

Colognian | Friidaach, dä 18. Dezämber 2009 |

Kurdish | 2009 berfanbarê 18, în |

Cornish | 2009 mis Kevardhu 18, dy Gwener |

Kyrgyz | 2009-ж., 18-декабрь, жума |

Langi | Ijumáa, 18 Kʉsasatʉ 2009 |

Luxembourgish | Freideg, 18. Dezember 2009 |

Ganda | Lwakutaano, 18 Desemba 2009 |

Lakota | Aŋpétuzaptaŋ, Tȟahékapšuŋ Wí 18, 2009 |

Lingala | mokɔlɔ ya mítáno 18 sánzá ya zómi na míbalé 2009 |

Lao | ວັນສຸກ ທີ 18 ທັນວາ ຄ.ສ. 2009 |

Northern Luri | AP 1388 Azar 27, Fri |

Lithuanian | 2009 m. gruodžio 18 d., penktadienis |

Luba-Katanga | Ngòvya 18 Ciswà 2009 |

Luo | Tich Abich, 18 Dwe mar Apar gi ariyo 2009 |

Luyia | Murwa wa Katano, 18 Desemba 2009 |

Latvian | Piektdiena, 2009. gada 18. decembris |

Masai | Jumáa, 18 Ntʉ́ŋʉ́s 2009 |

Meru | Wetano, 18 Dicemba 2009 |

Morisyen | vandredi 18 desam 2009 |

Malagasy | Zoma 18 Desambra 2009 |

Makhuwa-Meetto | Ijumaa, 18 Mweri wo kumi na yel’li 2009 |

Metaʼ | Aneg 6, 2009 iməg krizmed 18 |

Maori | Rāmere, 18 Hakihea 2009 |

Macedonian | петок, 18 декември 2009 |

Malayalam | 2009, ഡിസംബർ 18, വെള്ളിയാഴ്ച |

Mongolian | 2009 оны арван хоёрдугаар сарын 18, Баасан гараг |

Marathi | शुक्रवार, 18 डिसेंबर, 2009 |

Malay | Jumaat, 18 Disember 2009 |

Maltese | Il-Ġimgħa, 18 ta’ Diċembru 2009 |

Mundang | Comgaisuu 18 Fĩi Yuru 2009 |

Burmese | 2009၊ ဒီဇင်ဘာ 18၊ သောကြာ |

Mazanderani | AP 1388 Azar 27, Fri |

Nama | Fraitaxtsees, 18 Hôasoreǁkhâb 2009 |

Norwegian Bokmål | fredag 18. desember 2009 |

North Ndebele | Sihlanu, 18 Mpalakazi 2009 |

Low German | 2009 M12 18, Fri |

Nepali | 2009 डिसेम्बर 18, शुक्रबार |

Dutch | vrijdag 18 december 2009 |

Kwasio | mabágá má sukul 18 krísimin 2009 |

Norwegian Nynorsk | fredag 18. desember 2009 |

Ngiemboon | mvfò màga lyɛ̌ʼ , lyɛ̌ʼ 18 na saŋ lùm, 2009 |

Nuer | Dhieec lätni 18 Tio̱p in di̱i̱t 2009 |

Nyankole | Orwakataano, 18 Okwaikumi na ibiri 2009 |

Oromo | Jimaata, Muddee 18, 2009 |

Odia | ଶୁକ୍ରବାର, ଡିସେମ୍ବର 18, 2009 |

Ossetic | Майрӕмбон, 18 декабры, 2009 аз |

Punjabi | ਸ਼ੁੱਕਰਵਾਰ, 18 ਦਸੰਬਰ 2009 |

Punjabi | جمعہ, 18 دسمبر 2009 |

Punjabi | ਸ਼ੁੱਕਰਵਾਰ, 18 ਦਸੰਬਰ 2009 |

Polish | piątek, 18 grudnia 2009 |

Pashto | جمعه د AP 1388 د لیندۍ 27 |

Portuguese | sexta-feira, 18 de dezembro de 2009 |

Quechua | Viernes, 18 Diciembre, 2009 |

Romansh | venderdi, ils 18 da december 2009 |

Rundi | Ku wa gatanu 18 Kigarama 2009 |

Romanian | vineri, 18 decembrie 2009 |

Rombo | Ijumaa, 18 Mweri wa ikumi na mbili 2009 |

Russian | пятница, 18 декабря 2009 г. |

Kinyarwanda | 2009 Ukuboza 18, Kuwa gatanu |

Rwa | Ijumaa, 18 Desemba 2009 |

Sakha | 2009 сыл ахсынньы 18 күнэ, Бээтиҥсэ |

Samburu | Mderot ee sapa, 18 Lapa le tomon waare 2009 |

Sangu | Ijumaa, 18 Muhaano 2009 |

Sindhi | 2009 ڊسمبر 18, جمعو |

Northern Sami | 2009 juovlamánnu 18, bearjadat |

Sena | Chishanu, 18 de Decembro de 2009 |

Koyraboro Senni | Alzuma 18 Deesanbur 2009 |

Sango | Lâpôsö 18 Kakauka 2009 |

Tachelhit | ⵙⵉⵎⵡⴰⵙ 18 ⴷⵓⵊⴰⵏⴱⵉⵔ 2009 |

Tachelhit | asimwas 18 dujanbir 2009 |

Tachelhit | ⵙⵉⵎⵡⴰⵙ 18 ⴷⵓⵊⴰⵏⴱⵉⵔ 2009 |

Sinhala | 2009 දෙසැම්බර් 18, සිකුරාදා |

Slovak | piatok 18. decembra 2009 |

Slovenian | petek, 18. december 2009 |

Inari Sami | vástuppeivi, juovlâmáánu 18. 2009 |

Shona | 2009 Zvita 18, Chishanu |

Somali | Jimco, Bisha Laba iyo Tobnaad 18, 2009 |

Albanian | e premte, 18 dhjetor 2009 |

Serbian | петак, 18. децембар 2009. |

Serbian | петак, 18. децембар 2009. |

Serbian | petak, 18. decembar 2009. |

Swedish | fredag 18 december 2009 |

Swahili | Ijumaa, 18 Desemba 2009 |

Tamil | வெள்ளி, 18 டிசம்பர், 2009 |

Telugu | 18, డిసెంబర్ 2009, శుక్రవారం |

Teso | Nakakany, 18 Opoo 2009 |

Tajik | Ҷумъа, 18 Декабр 2009 |

Thai | วันศุกร์ที่ 18 ธันวาคม พ.ศ. 2552 |

Tigrinya | ዓርቢ፣ 18 ታሕሳስ መዓልቲ 2009 ዓ/ም |

Turkmen | 18 dekabr 2009 Anna |

Tongan | Falaite 18 Tīsema 2009 |

Turkish | 18 Aralık 2009 Cuma |

Tatar | 18 декабрь, 2009 ел, җомга |

Tasawaq | Alzuma 18 Deesanbur 2009 |

Central Atlas Tamazight | Asimwas, 18 Dujanbir 2009 |

Uyghur | 2009 18-دېكابىر، جۈمە |

Ukrainian | пʼятниця, 18 грудня 2009 р. |

Urdu | جمعہ، 18 دسمبر، 2009 |

Uzbek | juma, 18-dekabr, 2009 |

Uzbek | AP 1388 Azar 27, جمعه |

Uzbek | жума, 18 декабр, 2009 |

Uzbek | juma, 18-dekabr, 2009 |

Vai | ꕉꔤꕀꕮ, 18 ꖨꖕ ꕪꕴ ꗏꖺꕮꕊ 2009 |

Vai | aijima, 18 luukao lɔma 2009 |

Vai | ꕉꔤꕀꕮ, 18 ꖨꖕ ꕪꕴ ꗏꖺꕮꕊ 2009 |

Vietnamese | Thứ Sáu, 18 tháng 12, 2009 |

Vunjo | Ijumaa, 18 Desemba 2009 |

Walser | Fritag, 18. Chrištmánet 2009 |

Wolof | Àjjuma, 18 Des, 2009 |

Xhosa | 2009 Disemba 18, Lwesihlanu |

Soga | Olokutaanu, 18 Desemba 2009 |

Yangben | feléte 18 pilɔndɔ́ 2009 |

Yiddish | פֿרײַטיק, 18טן דעצעמבער 2009 |

Yoruba | Ẹtì, 18 Ọ̀pẹ 2009 |

Cantonese | 2009年12月18日 星期五 |

Cantonese | 2009年12月18日星期五 |

Cantonese | 2009年12月18日 星期五 |

Standard Moroccan Tamazight | ⴰⵙⵉⵎⵡⴰⵙ 18 ⴷⵓⵊⴰⵏⴱⵉⵔ 2009 |

Chinese | 2009年12月18日星期五 |

Chinese | 2009年12月18日星期五 |

Chinese | 2009年12月18日 星期五 |

Zulu | ULwesihlanu, Disemba 18, 2009 |