Two men smiling as they work out on rowing machines at the gym, illustrating the use of free fitness calculators to help plan physical activity.

free calculators

Free fitness calculators – work out your calorie intake and plan your results

Before you start training – find out which figures really do affect your results.

Our fitness calculators will help you work out your calorie requirements, choose a diet and gain a better understanding of how your body works.

This will help you reach your goal more quickly: weight loss, staying in shape or building muscle mass.

WHY IS THIS IMPORTANT?

Why is it worth using fitness calculators?

Many people train „by feel” – without a plan and without any data. This is one of the most common reasons for a lack of results. By using the Well Fitness calculators:

You find out what your actual calorie requirements are

You avoid running too large a deficit or surplus

You plan your diet and training based on specific figures

You reduce the time it takes to see results

Available fitness calculators

LIST OF CALCULATORS

1. TDEE calculator – how many calories do you need each day?

The most important tool to get you started. It shows how much energy your body uses during the day. You’ll find out:

how many calories should you eat to lose weight,
How many calories should you eat to maintain your weight?
How many calories should you eat to build muscle?.

Go to the TDEE calculator

Two smiling women in sportswear high-five each other during a workout at the gym. One is kneeling on a mat and the other is leaning towards her, celebrating the exercise they are doing together in a modern, sporty setting.

2. Calorie-burning calculator (coming soon)

Find out how many calories you burn during strength training, cardio or cycling.

WHAT NEXT?

How do you use the calculators?

The result itself is just the beginning.

Tailor it to your goal

Choose the calculator that best suits your goals – weight loss, muscle gain or improving your fitness.

Treat the result as a starting point

These calculations are just estimates – use them as a starting point and see how your body reacts.

Update your details regularly

Repeat the calculations every few weeks or whenever your weight, activity level or goal changes.

Tailor it to your needs

If you’re not seeing any results, make small adjustments (e.g. calories, training) rather than changing everything at once.

What data do the calculators use?

We use tried-and-tested models:

metabolic equations (e.g. Mifflin–St Jeor)
physical activity models (MET)
average physiological values

The results are for guidance only.

Important information for your safety:

Our calculators provide estimates only. The result is a mathematical forecast, not a medical diagnosis. Your body is a complex system influenced by factors such as body composition, hormonal balance and dietary history. The content on this website is for information and educational purposes only. Well Fitness accepts no liability for decisions made on the basis of the calculator’s estimates. If you are planning radical changes to your diet, always consult a qualified dietitian or doctor.

faq

Frequently asked questions

They help to estimate key parameters, such as calorie requirements and energy expenditure during a workout.

These are estimates based on scientific models.

It depends on your goal – for example, dieting, weight loss, building muscle or improving your fitness.

Ideally, every few weeks or whenever there is a change in your weight, activity level or training goal.

Not entirely – every body is different, so the results should be adjusted to suit your own observations.

No – they are of a supplementary and educational nature.