Free tools
Nutrition calculators that don’t ask for your email.
Ten calculators covering the numbers worth knowing before you start tracking. Everything runs in your browser — nothing is sent anywhere, nothing is stored, and there is no sign-up wall.
TDEE calculator
Daily calories you actually burn
BMR calculator
Calories burned at rest
Macro calculator
Protein, carbs and fat split
Calorie deficit
Target and realistic timeline
Weight loss timeline
The date you reach your goal
Protein calculator
Daily protein target in grams
BMI calculator
Body mass index and range
Body fat calculator
Estimate body fat percentage
Waist-to-height ratio
A better signal than BMI
Ideal weight
Healthy range for your height
Calories burned
By activity and duration
Water intake
Daily water from weight and climate
Where to start
Which one do you actually need?
Most people need two numbers and then nothing else: how many calories to eat, and how much protein. Everything else on this page is context.
| If you want to… | Start here | Then |
|---|---|---|
| Know your daily calories | TDEE calculator | Macro calculator |
| Lose fat by a certain date | Calorie deficit | Ideal weight |
| Build muscle | Protein calculator | Macro calculator |
| Understand your body composition | Body fat | BMI |
| Know what a workout is worth | Calories burned | BMR |
The honest bit
Calculators are the easy part.
Every number on this page is a population estimate applied to one person. They are good starting points and poor final answers. What turns them into something useful is two or three weeks of actually recording what you eat, then adjusting against your own weight trend.
That second part is where nearly everyone stops — not because the maths was wrong, but because logging four database searches per meal is tedious enough to abandon by the second week.
That is the specific problem BetterCal was built to remove. You say or type the meal in plain words and it is recorded, and meals you repeat are one tap.
Start today
Now put the numbers to work.
Free to start on iPhone and Android.
