Can I celebrate Eid if I didn't fast Ramadan?

Eid belongs to the whole community

Eid al-Fitr marks the end of Ramadan, but the Prophet ﷺ told everyone to come out for it, including people who weren't fasting at all, such as women on their periods (Sahih Muslim 890). Children, the sick, travelers, new Muslims who joined late: all of them pray, eat, give and celebrate together. Nobody checks your fasting record at the mosque door.

The Quran links the end of Ramadan with gratitude and glorifying Allah:

If you had a valid reason

Illness, pregnancy, breastfeeding, travel, periods, or a doctor telling you not to fast are all valid reasons. You did nothing wrong. You simply make up the missed days later in the year (or pay fidyah if you can never fast, such as with a long-term illness). See Do I have to make up missed Ramadan fasts?

If you skipped without a reason

Deliberately skipping Ramadan fasts is a serious sin, but it doesn't cancel your Islam or your Eid. Make sincere tawbah (repentance), make up the days, and use Eid as a fresh start instead of hiding from it. Most scholars say each missed day is made up with one day. The heavier expiation (kaffarah) is for deliberately breaking a fast already started, such as by intercourse; the schools differ on which other cases count.

What you should still do on Eid

• Pay zakat al-fitr. It's due on every Muslim who can afford it, whether they fasted or not (Sahih al-Bukhari 1503). See What is zakat al-fitr?
• Pray the Eid prayer with the community if you can.
• Don't fast on Eid day. Fasting on the day of Eid is not allowed, even to make up a missed day. See Can I fast on the day of Eid?
• Enjoy it. Visit family, eat good food, and give gifts.