All Tools

Browse every live tool in aifithub. All tools run in-browser and are free to use.

10 tools live

Nutrition

3 tools

Estimate your daily energy expenditure with Mifflin-St Jeor + activity factors.

Convert calorie targets into protein, carbs, and fat grams for your goal.

Get daily protein targets based on training level and goal.

1 tool

Estimate one-rep max with Epley, Brzycki, and Lombardi formulas.

1 tool

Calculate pace per km and mile and project race finish times from one run.

3 tools

Calculate BMI quickly with a plain-language range explanation and limitations.

Estimate body fat percentage using the U.S. Navy circumference method.

Compare Devine, Robinson, Miller, and Hamwi formulas as a realistic range.

1 tool

Calculate personalized training zones with the Karvonen method.

1 tool

Estimate required daily calorie deficit for a target timeline and bodyweight change.