Free Fitness Calculators and Converters
Welcome to the SportsBrackets fitness calculators hub. Every tool here is free, works on your phone, and needs no sign-up. Calculate your BMI, body fat, or daily calories, convert weight and height between metric and imperial, dial in your running pace and heart rate zones, and even measure your vertical jump. Each calculator has a matching step-by-step guide and a printable chart you can tape up at the gym or the kitchen. Pick a tool below to get started.
How These Fitness Tools Work Together
These calculators are built to be used side by side. Start with the calorie calculator to set your daily target, use the BMI calculator to see where your weight sits, and lean on the pace calculator when you are training toward a race. The height and weight converters take the friction out of everything else, so a metric number on a race entry or a piece of gym equipment never slows you down. Every tool is free, mobile-friendly, and paired with a printable you can keep on hand.
Looking for more than fitness? Browse the full Sports Tools & Calculators page for betting, bracket, and game-day utilities.
Frequently Asked Questions: Fitness Calculators
Are these fitness calculators free to use?
Yes. Every calculator and converter on this page is completely free, works in your browser on desktop or mobile, and never asks you to create an account or enter an email.
Do the tools work in both metric and imperial units?
Most do. The BMI and calorie calculators let you switch between metric and imperial, and the height and weight converters are built to move between the two systems instantly.
Can I print the charts?
Yes. Each how-to guide includes a free printable PDF, from a BMI chart and tracker to a running pace chart and a calorie and macro planner. Just open the guide and click the download button.
