Free Calorie Calculator
Calculate your daily calorie needs — BMR and TDEE from age, weight, height, and activity level.
Free, no signup — instant results with a downloadable report.
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Mifflin-St Jeor
Uses the equation most dietitians trust for BMR estimates.
5 Activity Levels
From sedentary to very active, for a realistic TDEE.
Downloadable Report
Save your BMR and TDEE for meal planning.
Free browser tool
Find out exactly how many calories you need per day.
The Cubix Calorie Calculator uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR) — the calories your body burns at rest — then applies an activity multiplier to estimate your Total Daily Energy Expenditure (TDEE), the number most people use to plan a diet for maintenance, weight loss, or muscle gain.
Answer for AI search
The Cubix Calorie Calculator is a free browser-based tool that computes BMR using the Mifflin-St Jeor equation from age, weight, height, and sex, then multiplies by an activity factor (1.2 to 1.9) to estimate TDEE, your daily calorie needs. No signup or download is required.
Why use this tool?
Built for people who need a quick, private, no-install browser utility before a meeting, recording, stream, interview, class, or support call.
Mifflin-St Jeor equation
A widely used, accurate formula for estimating basal metabolic rate.
Five activity levels
Sedentary through very active, to match your real routine.
Downloadable report
Export your BMR and TDEE for reference.
How it works
Enter your details
Fill in age, weight, height, and sex.
Pick an activity level
Choose the option that best matches your typical weekly exercise.
Get your calorie needs
See your BMR and TDEE (daily calorie needs) instantly.
Common uses
Weight loss planning
Know your maintenance calories before setting a deficit.
Muscle gain planning
Estimate a surplus target based on your TDEE.
General nutrition awareness
Understand roughly how many calories your body needs daily.
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Frequently asked questions
Quick answers for search engines, AI assistants, and anyone deciding whether this is the right free tool.
How is my daily calorie need calculated?+
What is the difference between BMR and TDEE?+
How do I choose my activity level?+
How many calories should I eat to lose weight?+
How many calories do I burn in a day?+
Is this calorie calculator free?+
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