Welcome to the Health & Fitness Tools hub of ToolsareFriends — your free starting point for understanding your body and planning a healthier lifestyle. Whether you want to know how many calories you burn each day, set a realistic weight-loss target or simply keep track of your fitness journey, our tools turn confusing numbers into clear, practical answers. Everything here is free, works on any device and needs no sign-up — just open a tool and start.
Health & Fitness Tools You May Like To Use
TDEE Calculator
Discover your Total Daily Energy Expenditure — the number of calories your body burns each day. Use it to set calorie targets for losing weight, gaining muscle or maintaining your current weight.
BMI Calculator
Check your body mass index in seconds — enter your height and weight to see your BMI, your category and your healthy weight range.
Water Intake Calculator
Find your personal daily water target — enter your weight and activity level to see how many litres you should drink each day.
Body Fat Calculator
Estimate your body fat percentage with the US Navy tape-measure method — just a few measurements, instant result and category.
Pregnancy Due Date Calculator
Work out your baby’s due date — enter the first day of your last period to see your due date, weeks pregnant and trimester.
What Are Health & Fitness Tools?
Health and fitness tools are simple online calculators that help you understand your body and make better decisions about food and exercise. The best-known example is the TDEE calculator: TDEE stands for Total Daily Energy Expenditure, which is the total number of calories you burn in a day through basic body functions, daily movement and exercise. Once you know your TDEE, the maths of weight management becomes straightforward — eat fewer calories than your TDEE to lose weight, more to gain weight, and roughly the same to maintain it.
These tools matter because guesswork is the enemy of progress. Many people under- or over-estimate how much they eat and how much they move. A quick calculation gives you a personalised number to work from, which you can then adjust as you track your results over a few weeks. Our tools use widely accepted formulas and clear inputs, so you get a trustworthy answer in seconds.
We are also expanding this hub with BMI-type tools, so you will soon be able to check your Body Mass Index and related measures right here alongside your TDEE — giving you a fuller picture of your health in one place.
Who Are These Tools For?
These tools are for anyone who wants to take charge of their health — from complete beginners starting their first diet to gym-goers fine-tuning their nutrition. If you are planning to lose a few pounds, build muscle, train for a sport or simply eat more mindfully, knowing your numbers is the first step.
They are also useful for parents helping teenagers build healthy habits, for coaches giving clients a sensible starting point, and for anyone curious about how their lifestyle translates into calories. Because the tools run in your browser, you can use them privately at home or on the go, on your phone, tablet or computer.
How Our Health & Fitness Tools Help You
The TDEE calculator asks for basics like your age, height, weight and activity level, then estimates your daily calorie burn using a proven formula. With that number in hand, you can set a daily calorie target that matches your goal — for example, eating around 300 to 500 calories below your TDEE for steady, sustainable weight loss, or slightly above it to build muscle.
Pair that with the soon-to-arrive BMI calculator and you can track both sides of the equation: how much energy you use and where your weight sits relative to healthy ranges. Small, informed adjustments beat dramatic crash diets every time — and these free tools make the informed part easy.
Frequently Asked Questions
Are these health and fitness tools free?
Yes — every tool in this hub is completely free, with no sign-up, no downloads and no hidden limits. Just open the tool in your browser and start calculating.
What exactly is TDEE?
TDEE stands for Total Daily Energy Expenditure — the total number of calories your body burns in 24 hours. It includes the energy used to keep you alive (breathing, digestion, circulation), the energy used in everyday movement, and the energy burned through exercise. Knowing your TDEE is the foundation of any calorie-based diet or fitness plan.
How accurate is the TDEE calculator?
The calculator uses standard, widely accepted formulas and gives a reliable estimate for most people. However, it is still an estimate — individual metabolism, body composition and daily routines vary. Treat the result as a starting point, track your weight for two to three weeks, and adjust your calorie target based on your real results.
Can these tools replace professional medical advice?
No. Our tools provide general information for planning and education — they are not a substitute for medical advice. If you have a health condition, are pregnant, or want to make major changes to your diet or exercise routine, please speak to a doctor or a qualified dietitian first.
When will the BMI calculator be available?
Our BMI-type tools are on the way and will appear in this hub soon. Check back regularly — new tools are added to ToolsareFriends all the time, and they are always free to use.