BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at complete rest — using the Mifflin–St Jeor equation.
Open calculator →All Calorie & Nutrition Calculators
Free, instant, and built on published formulas. Pick a tool below — every calculator explains what it calculates, how, and what to do with the result.
Body & Energy Calculators
Core calorie and body-metric tools: BMR, TDEE, calorie deficit, macros and BMI.
TDEE Calculator
Calculate your Total Daily Energy Expenditure — how many calories you actually burn per day including activity — to set an accurate calorie target.
Open calculator →Calorie Deficit Calculator
Work out exactly how many calories to eat to lose or gain weight at a safe, sustainable rate, based on your own stats and timeframe.
Open calculator →Macro Calculator
Turn your daily calorie target into a practical protein, carbohydrate and fat split based on your body weight and goal.
Open calculator →BMI Calculator
Calculate your Body Mass Index using standard WHO classification bands, with an explanation of what BMI can and cannot tell you.
Open calculator →Restaurant Calorie Calculators
Build-your-plate calculators for eating out, starting with self-serve and pub-style menus.
Toby Carvery Calorie Calculator
Build your actual carvery plate — meats, potatoes, veg, gravy and all — and see a live calorie and nutrition total before you sit down.
Open calculator →Wetherspoons Calorie Calculator
Build a full Wetherspoons order — mains, sides, dessert and drinks — and see calories, macros and salt add up in real time.
Open calculator →Frequently Asked Questions
Which calculator should I start with?
If you are new to tracking, start with the TDEE Calculator — it tells you roughly how many calories you burn per day, which is the number every other goal (fat loss, maintenance, muscle gain) is built from.
Do I need to create an account to use these tools?
No. Every calculator is free and works instantly without registration. Nothing you enter is stored or sent to a server.