JIUJITSU TOOLS
BJJ grapplers in action

FREE BJJ TOOLS
FOR GRAPPLERS

Calculators, timers, and utilities to level up your jiu-jitsu. 100% free, no signup required.

Belt CalculatorTraining Timer

EXPLORE OUR TOOLS

Everything you need to plan your training, track your progress, and prepare for competition.

Belt Progression Calculator

Calculate your estimated time to the next belt based on training frequency and IBJJF minimum requirements.

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Competition Weight Calculator

Plan safe weight cuts for competition. Calculate daily calorie deficit and see IBJJF/ADCC weight classes.

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Training Interval Timer

Customizable round timer for drilling, sparring, and positional training with audio alerts.

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Gi Size Calculator

Find your perfect gi size across major brands based on your height, weight, and build type.

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BJJ TOOLS BLOG

Training tips, gear guides, and resources to help you level up your jiu-jitsu journey.

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Track your entire BJJ journey with BJJChat. Log training sessions, learn techniques, monitor your progress, and connect with gyms worldwide.

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ABOUT JIUJITSU TOOLS

JiuJitsu Tools provides free, easy-to-use calculators and utilities for Brazilian Jiu-Jitsu practitioners at all levels. Whether you're a white belt calculating how long until blue belt, or a competitor planning your weight cut, our tools help you make informed decisions about your training.

All tools are free to use with no account required. Simply select a tool above and start using it immediately. Our calculators use industry-standard data from IBJJF, ADCC, and major gi manufacturers to provide accurate recommendations.

Built by BJJChat, the free gym management platform for BJJ academies and practitioners.