How old is Lincoln Markham?

Lincoln Markham was born on 3 January 2006.
Lincoln Markham is 20 years old.

How old is Lincoln Markham in days now?

Lincoln Markham is 20 years 1 month 21 days old.
Total 7,357 days old now.

When is the next birthday of Lincoln Markham?

Lincoln Markham's next birthday is in 10 months 10 days.

What is the zodiac sign of Lincoln Markham?

Zodiac sign of Lincoln Markham is Capricorn.

Lincoln Markham is a young American YouTuber and social media personality best known for his role on the popular YouTube channel What’s Inside?. He was born in 2006 in Arizona and is the son of Daniel Markham, a successful content creator and inventor. From an early age, Lincoln showed strong curiosity and creativity, repeatedly asking the question “What’s inside?”—a habit that directly inspired the idea for the channel.

Father and son launched What’s Inside? in 2014, turning everyday objects into fascinating experiments by cutting them open and exploring their inner workings. Lincoln quickly became a recognizable and essential part of the channel, helping shape its family-friendly and educational style. Their content covers a wide range of items, from household objects to unusual and unexpected materials.

By late 2025, the channel had grown to more than 6.5 million subscribers and received several award nominations. One of their most popular videos, What’s Inside a Rattlesnake Rattle, has surpassed 80 million views, highlighting the channel’s lasting appeal and global reach.