This page was updated at 4pm EST on July 25, 2018
As the calendar flips over from 2017 to 2018, we figure this is a good time for a reminder about how age is recorded on Tumblr. To take a paragraph from our Age on Tumblr article:
We calculate your age according to your year of birth. To figure out if you’re 18, our system takes your birth year and subtracts it from the current year. So to be considered “over 18” by our system in 2018, you need to have indicated that your birth year was 2000 or earlier when you signed up.
In other words, if you registered in 2018 and were born in 2001, you’ll be able to turn off Safe Mode at the stroke of midnight on January 1st, 2019.
For a little more information on this, check out Your Age on Tumblr.