About Us

The story of how a fitness obsession and a CS degree turned into guessmybf.org.

Featured On

Ahhh, Reddit. The whole idea behind using pictures to estimate body fat comes from the r/guessmybf subreddit. My post is still stickied in the original subreddit!

Origin Story

To be honest, guessmybf.org was built out of boredom during college. I’ve always been an active lurker in the r/guessmybf subreddit. I still remember the days in high school, spending hours reading about fitness, powerlifting, and optimal training.After high school, I spent a year learning Chinese in Hualien, Taiwan, and fell in love with the place. I wanted to do a bachelor's in math, but ended up in Computer Science. Around the 3rd year, burned out on Rocket League and job hunting, I decided to work on a personal project. And thus, guessmybf.org was born.

The Team

Joel Chang

Joel Chang

Founder & Developer

I'm from Honduras, currently living in Taiwan! I've been lifting for over a decade. Currently very into Salsa and Bachata.