In a world full of distractions and deadlines, staying healthy and productive isn't always easy. Luckily, there are smart and simple tools out there that can help. Here are 5 of the best free tools you can use online to improve your daily health and boost your productivity — tested and trusted by MathijssenFit.
1. BMI Calculator
Understanding your Body Mass Index is a great first step to track your overall health. Our BMI Calculator gives you a quick and clear insight into your weight category — underweight, normal, overweight or obese.
2. Calorie Intake Calculator
If you're trying to gain, lose or maintain your weight, knowing your daily calorie needs is key. This tool gives you a clear number based on your age, weight, height and activity level.
3. Pomodoro Timer
The Pomodoro Timer is one of the most effective tools to help you focus. It breaks your workday into 25-minute sprints followed by short breaks. Great for getting more done without burning out.
4. Water Intake Calculator
Hydration matters! Use our Water Intake Calculator to find out how much water you should drink based on your weight and activity level. Staying hydrated boosts your focus, mood, and metabolism.
5. Online Stopwatch
Whether you're timing a workout or a study session, our free Stopwatch is clean, simple, and easy to use — no downloads needed.
Final Thoughts
You don’t need complicated apps or paid subscriptions to build better habits. These tools are here to help — free, fast, and designed with care. Start small, stay consistent, and check in daily. You’ve got this 💪