How old am I if I was born on September 11 1999? 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 September 11 1999.

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 September 11 1999. How old am I?

You were born on September 11 1999. 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 September 11 1999?

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 September 11 1999 in a theoretical way**.

**To know how old you are if you were born on September 11 1999, 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 September 11 1999, 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 September 11 1999.

## Calculate full years since September 11 1999

The first step is calculating full years. So you were born on September 11 1999, and today is September 8 2024. First you need to do is checking if the 11th of September has passed this year. This is the 8th of September, so September 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 - 1999 = 24

As you can see, you require subtracting the year of your birth from the current year. In this case, the result is 24. **So it means that you are 24 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 September 11 1999 to now

The second step is to calculate full, remaining months. You were born on September 11 1999, today is September 8 2024. You know that there are 24 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 11th September. So now you require checking if 8th September has passed this year. If today is 8th of September, it means yes, 11th of September has passed. So you will calculate full months from September to September.

To make calculations, it will be better to mark months as numbers. September is the 9th month of the year, so mark it just as 11, and September is the 24th month of the year, so mark it just as 24. And now you can calculate the full, remaining months.

The calculations look as follows:

9 - 9 = 11

So you need to subtract the smaller number, in this case 11, from the bigger one, in this case 24. And then you have the result – it is 11 months. **So now we know that if you were born on September 11 1999 you are 24 years and 11 months old. **But what about days? Let’s check it!

## Days left since September 11 1999 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 September 11 1999, today is September 8 2024. You have calculated full years, from 1999 to 2024, and full months, from September to September. It means you need to count only the days from September.

You were born on the 11th. Today is the 8th. So the calculations will be quite easy. You need to just subtract 11 from the 8 to see the number of days. The calculations will look like this:

So there are 29 full days left.

So to sum up – there are 24 full years, 11 full months and 29 days.** So it means you are 24 years, 11 months and 29 days old exactly!**

## How Old Calculator dedicated to calculate how old you are if you were born on September 11 1999

Have you scrolled all parts containing calculations to know the easier way to know your age if you were born on September 11 1999?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 September 11 1999. 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 September 11 1999.

## 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 September 11 1999. 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) | Saturday, 11 September 1999 |

Afrikaans | Saterdag 11 September 1999 |

Aghem | tsuʔndzɨkɔʔɔ 11 ndzɔ̀ŋɔ̀tƗ̀fʉ̀ghàdzughù 1999 |

Akan | Memeneda, 1999 Fankwa-Ɛbɔ 11 |

Amharic | 1999 ሴፕቴምበር 11, ቅዳሜ |

Arabic | السبت، 11 سبتمبر 1999 |

Assamese | শনিবাৰ, 11 ছেপ্তেম্বৰ, 1999 |

Asu | Jumamosi, 11 Septemba 1999 |

Asturian | sábadu, 11 de setiembre de 1999 |

Azerbaijani | 11 sentyabr 1999, şənbə |

Azerbaijani | 11 сентјабр 1999, шәнбә |

Azerbaijani | 11 sentyabr 1999, şənbə |

Basaa | ŋgwà jôn 11 Dìpɔ̀s 1999 |

Belarusian | субота, 11 верасня 1999 г. |

Bemba | Pachibelushi, 11 Septemba 1999 |

Bena | pa shahulembela, 11 pa mwedzi gwa tisa 1999 |

Bulgarian | събота, 11 септември 1999 г. |

Bambara | sibiri 11 sɛtanburu 1999 |

Bangla | শনিবার, 11 সেপ্টেম্বর, 1999 |

Tibetan | 1999 ཟླ་བ་དགུ་པའི་ཚེས་11, གཟའ་སྤེན་པ་ |

Breton | Sadorn 11 Gwengolo 1999 |

Bodo | सुनिबार, सेबथेज्ब़र 11, 1999 |

Bosnian | subota, 11. septembar 1999. |

Bosnian | субота, 11. септембар 1999. |

Bosnian | subota, 11. septembar 1999. |

Catalan | dissabte, 11 de setembre de 1999 |

Chakma | 𑄥𑄧𑄚𑄨𑄝𑄢𑄴, 11 𑄥𑄬𑄛𑄴𑄑𑄬𑄟𑄴𑄝𑄧𑄢𑄴, 1999 |

Chechen | 1999 сентябрь 11, шуот |

Cebuano | Sabado, Setyembre 11, 1999 |

Chiga | Orwamukaaga, 11 Okwamwenda 1999 |

Cherokee | ᎤᎾᏙᏓᏈᏕᎾ, ᏚᎵᏍᏗ 11, 1999 |

Central Kurdish | 1999 ئەیلوول 11, شەممە |

Czech | sobota 11. září 1999 |

Welsh | Dydd Sadwrn, 11 Medi 1999 |

Danish | lørdag den 11. september 1999 |

Taita | Kifula nguwo, 11 Mori ghwa ikenda 1999 |

German | Samstag, 11. September 1999 |

Zarma | Asibti 11 Sektanbur 1999 |

Lower Sorbian | sobota, 11. septembra 1999 |

Duala | esaɓasú 11 nyɛtɛki 1999 |

Jola-Fonyi | Sibiti 11 Settembar 1999 |

Dzongkha | གཟའ་ཉི་མ་, སྤྱི་ལོ་1999 ཟླ་དགུ་པ་ ཚེས་11 |

Embu | NJumamothii, 11 Mweri wa kenda 1999 |

Ewe | memleɖa, anyɔnyɔ 11 lia 1999 |

Greek | Σάββατο, 11 Σεπτεμβρίου 1999 |

English | Saturday, September 11, 1999 |

Esperanto | sabato, 11-a de septembro 1999 |

Spanish | sábado, 11 de septiembre de 1999 |

Estonian | laupäev, 11. september 1999 |

Basque | 1999(e)ko irailaren 11(a), larunbata |

Ewondo | séradé 11 ngɔn ebulú 1999 |

Persian | 1378 شهریور 20, شنبه |

Fulah | hoore-biir 11 siilto 1999 |

Fulah | hoore-biir 11 siilto 1999 |

Finnish | lauantai 11. syyskuuta 1999 |

Filipino | Sabado, Setyembre 11, 1999 |

Faroese | leygardagur, 11. september 1999 |

French | samedi 11 septembre 1999 |

Friulian | sabide 11 di Setembar dal 1999 |

Western Frisian | sneon 11 Septimber 1999 |

Irish | Dé Sathairn 11 Meán Fómhair 1999 |

Scottish Gaelic | DiSathairne, 11mh dhen t-Sultain 1999 |

Galician | Sábado, 11 de setembro de 1999 |

Swiss German | Samschtig, 11. Septämber 1999 |

Gujarati | શનિવાર, 11 સપ્ટેમ્બર, 1999 |

Gusii | Esabato, 11 Septemba 1999 |

Manx | 1999 Mean-fouyir 11, Jesarn |

Hausa | Asabar 11 Satumba, 1999 |

Hawaiian | Poʻaono, 11 Kepakemapa 1999 |

Hebrew | יום שבת, 11 בספטמבר 1999 |

Hindi | शनिवार, 11 सितंबर 1999 |

Croatian | subota, 11. rujna 1999. |

Upper Sorbian | sobota, 11. septembra 1999 |

Hungarian | 1999. szeptember 11., szombat |

Armenian | 1999 թ. սեպտեմբերի 11, շաբաթ |

Interlingua | sabbato le 11 de septembre 1999 |

Indonesian | Sabtu, 11 September 1999 |

Igbo | Satọdee, 11 Septemba 1999 |

Sichuan Yi | 1999 ꈬꆪ 11, ꆏꊂꃘ |

Icelandic | laugardagur, 11. september 1999 |

Italian | sabato 11 settembre 1999 |

Japanese | 1999年9月11日土曜日 |

Ngomba | Sásidɛ, 1999 Pɛsaŋ Pɛ́nɛ́pfúꞋú 11 |

Machame | Jumamosi, 11 Septemba 1999 |

Javanese | Sabtu, 11 September 1999 |

Georgian | შაბათი, 11 სექტემბერი, 1999 |

Kabyle | Sayass 11 Ctembeṛ 1999 |

Kamba | Wa thanthatũ, 11 Mwai wa kenda 1999 |

Makonde | Liduva litandi, 11 Mwedi wa Nnyano na Nchechi 1999 |

Kabuverdianu | sábadu, 11 di Setenbru di 1999 |

Koyra Chiini | Assabdu 11 Sektanbur 1999 |

Kikuyu | Njumamothi, 11 Mwere wa kenda 1999 |

Kazakh | 1999 ж. 11 қыркүйек, сенбі |

Kako | mɔnɔ sɔndi 11 njapi 1999 |

Kalaallisut | 1999 septembarip 11, arfininngorneq |

Kalenjin | Kolo, 11 Bureet 1999 |

Khmer | សៅរ៍ 11 កញ្ញា 1999 |

Kannada | ಶನಿವಾರ, ಸೆಪ್ಟೆಂಬರ್ 11, 1999 |

Korean | 1999년 9월 11일 토요일 |

Konkani | शेनवार 11 सप्टेंबर 1999 |

Kashmiri | بٹوار, ستمبر 11, 1999 |

Shambala | Jumaamosi, 11 Septemba 1999 |

Bafia | samdí 11 ŋwíí akǝ táanin 1999 |

Colognian | Samsdaach, dä 11. Septämber 1999 |

Kurdish | 1999 rezberê 11, şemî |

Cornish | 1999 mis Gwynngala 11, dy Sadorn |

Kyrgyz | 1999-ж., 11-сентябрь, ишемби |

Langi | Jumamóosi, 11 Kʉsaatʉ 1999 |

Luxembourgish | Samschdeg, 11. September 1999 |

Ganda | Lwamukaaga, 11 Sebuttemba 1999 |

Lakota | Owáŋgyužažapi, Čhaŋwápeǧi Wí 11, 1999 |

Lingala | mpɔ́sɔ 11 sánzá ya libwa 1999 |

Lao | ວັນເສົາ ທີ 11 ກັນຍາ ຄ.ສ. 1999 |

Northern Luri | AP 1378 Shahrivar 20, Sat |

Lithuanian | 1999 m. rugsėjo 11 d., šeštadienis |

Luba-Katanga | Lubingu 11 Lutongolo 1999 |

Luo | Ngeso, 11 Dwe mar Ochiko 1999 |

Luyia | Jumamosi, 11 Septemba 1999 |

Latvian | Sestdiena, 1999. gada 11. septembris |

Masai | Jumamósi, 11 Kúshîn 1999 |

Meru | Jumamosi, 11 Septemba 1999 |

Morisyen | samdi 11 septam 1999 |

Malagasy | Asabotsy 11 Septambra 1999 |

Makhuwa-Meetto | Jumamosi, 11 Mweri wo tisa 1999 |

Metaʼ | Aneg 7, 1999 iməg kud 11 |

Maori | Rāhoroi, 11 Mahuru 1999 |

Macedonian | сабота, 11 септември 1999 |

Malayalam | 1999, സെപ്റ്റംബർ 11, ശനിയാഴ്ച |

Mongolian | 1999 оны есдүгээр сарын 11, Бямба гараг |

Marathi | शनिवार, 11 सप्टेंबर, 1999 |

Malay | Sabtu, 11 September 1999 |

Maltese | Is-Sibt, 11 ta’ Settembru 1999 |

Mundang | Comzyeɓsuu 11 Fĩi Dǝɓlii 1999 |

Burmese | 1999၊ စက်တင်ဘာ 11၊ စနေ |

Mazanderani | AP 1378 Shahrivar 20, Sat |

Nama | Satertaxtsees, 11 Taraǀkhuumûǁkhâb 1999 |

Norwegian Bokmål | lørdag 11. september 1999 |

North Ndebele | Mgqibelo, 11 Mpandula 1999 |

Low German | 1999 M09 11, Sat |

Nepali | 1999 सेप्टेम्बर 11, शनिबार |

Dutch | zaterdag 11 september 1999 |

Kwasio | sásadi 11 ngwɛn rɛbvuâ 1999 |

Norwegian Nynorsk | laurdag 11. september 1999 |

Ngiemboon | màga lyɛ̌ʼ , lyɛ̌ʼ 11 na saŋ ngwɔ̀ʼ mbÿɛ, 1999 |

Nuer | Bäkɛl lätni 11 Tɛɛr 1999 |

Nyankole | Orwamukaaga, 11 Okwamwenda 1999 |

Oromo | Sanbata, Fuulbana 11, 1999 |

Odia | ଶନିବାର, ସେପ୍ଟେମ୍ବର 11, 1999 |

Ossetic | Сабат, 11 сентябры, 1999 аз |

Punjabi | ਸ਼ਨਿੱਚਰਵਾਰ, 11 ਸਤੰਬਰ 1999 |

Punjabi | ہفتہ, 11 ستمبر 1999 |

Punjabi | ਸ਼ਨਿੱਚਰਵਾਰ, 11 ਸਤੰਬਰ 1999 |

Polish | sobota, 11 września 1999 |

Pashto | اونۍ د AP 1378 د وږی 20 |

Portuguese | sábado, 11 de setembro de 1999 |

Quechua | Sábado, 11 Setiembre, 1999 |

Romansh | sonda, ils 11 da settember 1999 |

Rundi | Ku wa gatandatu 11 Nyakanga 1999 |

Romanian | sâmbătă, 11 septembrie 1999 |

Rombo | Ijumamosi, 11 Mweri wa tisa 1999 |

Russian | суббота, 11 сентября 1999 г. |

Kinyarwanda | 1999 Nzeli 11, Kuwa gatandatu |

Rwa | Jumamosi, 11 Septemba 1999 |

Sakha | 1999 сыл Балаҕан ыйын 11 күнэ, субуота |

Samburu | Mderot ee kwe, 11 Lapa le saal 1999 |

Sangu | Jumamosi, 11 Munyense 1999 |

Sindhi | 1999 سيپٽمبر 11, ڇنڇر |

Northern Sami | 1999 čakčamánnu 11, lávvardat |

Sena | Sabudu, 11 de Setembro de 1999 |

Koyraboro Senni | Asibti 11 Sektanbur 1999 |

Sango | Lâyenga 11 Mvuka 1999 |

Tachelhit | ⴰⵙⵉⴹⵢⴰⵙ 11 ⵛⵓⵜⴰⵏⴱⵉⵔ 1999 |

Tachelhit | asiḍyas 11 cutanbir 1999 |

Tachelhit | ⴰⵙⵉⴹⵢⴰⵙ 11 ⵛⵓⵜⴰⵏⴱⵉⵔ 1999 |

Sinhala | 1999 සැප්තැම්බර් 11, සෙනසුරාදා |

Slovak | sobota 11. septembra 1999 |

Slovenian | sobota, 11. september 1999 |

Inari Sami | lávurdâh, čohčâmáánu 11. 1999 |

Shona | 1999 Gunyana 11, Mugovera |

Somali | Sabti, Bisha Sagaalaad 11, 1999 |

Albanian | e shtunë, 11 shtator 1999 |

Serbian | субота, 11. септембар 1999. |

Serbian | субота, 11. септембар 1999. |

Serbian | subota, 11. septembar 1999. |

Swedish | lördag 11 september 1999 |

Swahili | Jumamosi, 11 Septemba 1999 |

Tamil | சனி, 11 செப்டம்பர், 1999 |

Telugu | 11, సెప్టెంబర్ 1999, శనివారం |

Teso | Nakasabiti, 11 Osokosokoma 1999 |

Tajik | Шанбе, 11 Сентябр 1999 |

Thai | วันเสาร์ที่ 11 กันยายน พ.ศ. 2542 |

Tigrinya | ቀዳም፣ 11 መስከረም መዓልቲ 1999 ዓ/ም |

Turkmen | 11 sentýabr 1999 Şenbe |

Tongan | Tokonaki 11 Sepitema 1999 |

Turkish | 11 Eylül 1999 Cumartesi |

Tatar | 11 сентябрь, 1999 ел, шимбә |

Tasawaq | Asibti 11 Sektanbur 1999 |

Central Atlas Tamazight | Asiḍyas, 11 Cutanbir 1999 |

Uyghur | 1999 11-سېنتەبىر، شەنبە |

Ukrainian | субота, 11 вересня 1999 р. |

Urdu | ہفتہ، 11 ستمبر، 1999 |

Uzbek | shanba, 11-sentabr, 1999 |

Uzbek | AP 1378 Shahrivar 20, شنبه |

Uzbek | шанба, 11 сентябр, 1999 |

Uzbek | shanba, 11-sentabr, 1999 |

Vai | ꔻꔬꔳ, 11 ꕢꕌ 1999 |

Vai | siɓiti, 11 saah 1999 |

Vai | ꔻꔬꔳ, 11 ꕢꕌ 1999 |

Vietnamese | Thứ Bảy, 11 tháng 9, 1999 |

Vunjo | Jumamosi, 11 Septemba 1999 |

Walser | Samštag, 11. Herbštmánet 1999 |

Wolof | Aseer, 11 Sàt, 1999 |

Xhosa | 1999 Septemba 11, Mgqibelo |

Soga | Olomukaaga, 11 Sebuttemba 1999 |

Yangben | séselé 11 imɛŋ i puɔs 1999 |

Yiddish | שבת, 11טן סעפּטעמבער 1999 |

Yoruba | Àbámẹ́ta, 11 Owe 1999 |

Cantonese | 1999年9月11日 星期六 |

Cantonese | 1999年9月11日星期六 |

Cantonese | 1999年9月11日 星期六 |

Standard Moroccan Tamazight | ⴰⵙⵉⴹⵢⴰⵙ 11 ⵛⵓⵜⴰⵏⴱⵉⵔ 1999 |

Chinese | 1999年9月11日星期六 |

Chinese | 1999年9月11日星期六 |

Chinese | 1999年9月11日 星期六 |

Zulu | UMgqibelo, Septhemba 11, 1999 |