Calories & Nutrition
10 free calculators & converters. Every tool runs entirely in your browser — nothing you type is uploaded.
Available calculators
Calorie Calculator
Free daily calorie calculator. Enter your stats and activity level to estimate how many calories you burn each day. Supports weight goal planning.
Calorie Deficit Calculator
Calculate your weekly and monthly fat loss from a calorie deficit. Enter your TDEE and daily calorie intake to see how fast you'll reach your goal.
Calories Burned by Distance
Estimate calories burned walking, running, or cycling a given distance. Enter distance and body weight to see approximate energy expenditure.
Calories Burned by Heart Rate
Estimate calories burned during cardio exercise using the heart-rate based Keytel formula. Inputs: age, weight, heart rate during exercise, duration. Free, no sign-up.
kJ to Calories Converter
Convert between kilojoules (kJ), Calories (kcal), and small calories (cal). Essential for reading nutrition labels in different countries.
Macro Calculator
Free macro calculator. Enter your daily calorie goal and preferred macro split to calculate your daily protein, carbohydrate, and fat targets in grams.
Protein Calculator
Calculate your daily protein intake goal based on your weight, activity level, and fitness goal. RDA, muscle-building, and dieting targets included.
MET to Calories Calculator
Convert MET (Metabolic Equivalent) values to calories burned for any activity. Enter body weight and activity intensity.
Steps to Calories Calculator
Convert steps to calories burned based on your body weight. Works for walking, running, and general movement.
TDEE Calculator
Free TDEE calculator. Estimate daily calorie burn including exercise and activity levels — the key number for weight loss and muscle gain planning.
About the Calories & Nutrition
All 10 free calories & nutrition calculators and converters at mQuickCalc Health. No sign-up, no email, no data collected. The tool runs entirely in your browser, so nothing you enter is uploaded or stored.
Choosing the right tool
- Calorie Calculator — Free daily calorie calculator. Enter your stats and activity level to estimate how many calories you burn each day. Supports weight goal planning.
- Calorie Deficit Calculator — Calculate your weekly and monthly fat loss from a calorie deficit. Enter your TDEE and daily calorie intake to see how fast you'll reach your goal.
- Calories Burned by Distance — Estimate calories burned walking, running, or cycling a given distance. Enter distance and body weight to see approximate energy expenditure.
- Calories Burned by Heart Rate — Estimate calories burned during cardio exercise using the heart-rate based Keytel formula. Inputs: age, weight, heart rate during exercise, duration. Free, no sign-up.
- kJ to Calories Converter — Convert between kilojoules (kJ), Calories (kcal), and small calories (cal). Essential for reading nutrition labels in different countries.
- Macro Calculator — Free macro calculator. Enter your daily calorie goal and preferred macro split to calculate your daily protein, carbohydrate, and fat targets in grams.
- Protein Calculator — Calculate your daily protein intake goal based on your weight, activity level, and fitness goal. RDA, muscle-building, and dieting targets included.
- MET to Calories Calculator — Convert MET (Metabolic Equivalent) values to calories burned for any activity. Enter body weight and activity intensity.
- Steps to Calories Calculator — Convert steps to calories burned based on your body weight. Works for walking, running, and general movement.
- TDEE Calculator — Free TDEE calculator. Estimate daily calorie burn including exercise and activity levels — the key number for weight loss and muscle gain planning.
For general information only, not medical advice — see our disclaimer.
Frequently asked questions
How many calories should I eat per day?
Use TDEE (total daily energy expenditure) = BMR x activity level. A 70 kg woman with moderate activity needs about 2,100 calories. The calorie calculator estimates your TDEE.
How many calories do I burn per day at rest?
BMR (basal metabolic rate) is the calories your body needs at rest. For men: 10 x weight(kg) + 6.25 x height(cm) - 5 x age + 5. The BMR calculator does this automatically.
How do I calculate a calorie deficit for weight loss?
A deficit of 500 calories/day leads to about 0.5 kg (1 lb) loss per week. The calorie deficit calculator shows your weekly and monthly fat loss projections.