This project was started to apply the web front-end, back-end, and JavaScript functions learned.
OwOb is operated on Cloudflare pages, and the OwOb API server is being developed and operated using Cloudflare workers and Hono Library.

BMR Calculator

Tool to calculate basal metabolic rate (BMR) using well-known algorithms

Gender :
Age :years
Height :
Weight :
Unit :

BMR = 1,806 Calories/day

activity leveltimefrequencyCalories/Day
No Activity 0 minutesLittle or no exercise2,167
Low Activity 15~30 minutes1~3 times per week2,483
Light Activity 15~30 minutes4~5 times per week2,645
Medium Activity 15~30 minutes3~4 times per week2,799
High Activity 45~120 minutes6~7 times per week3,115
Very High Activity 2+ hoursDaily3,431


Calculators specialized for specific calculations rather than simple arithmetic calculators


Time & Date

Health & Fitness