How it works
The calculator estimates BMR, applies an activity multiplier for TDEE, and adjusts the result by your selected goal pace.
CalorieCalc.fit
Calorie Calculator online
Calculate daily calories for weight loss, maintenance, or weight gain, then see BMR, TDEE, BMI, macro grams, and goal safety feedback.
Local calculation
No account or saved profile
Formula transparent
BMR, TDEE, BMI shown together
Next step ready
Macros, schedule, or explanation
Energy result
Step 2Ready
Your result appears here.
Complete the form and calculate daily calories, BMR, TDEE, BMI, macros, and goal feedback locally in your browser.
Formula explanation
Mifflin-St Jeor estimates BMR from sex, age, height, and weight. TDEE multiplies BMR by activity level, then goals adjust calories up or down.
Related calculators
Quick Answers
What is a safe calorie deficit?
A safe calorie deficit is usually moderate enough to keep your target above basic low-calorie thresholds.
CalorieCalc.fit warns when a target falls below 1,500 kcal/day for male users or 1,200 kcal/day for female users. These are educational guardrails, not medical advice.
How many calories should I eat to lose 1 lb per week?
A 1 lb per week estimate usually means about 500 calories below maintenance per day.
The calculator compares this standard loss target with mild loss, aggressive loss, maintenance, lean bulk, and bulk targets so you can choose a realistic pace.
Why is my calorie result only an estimate?
Your result is an estimate because formulas cannot know your exact metabolism, movement, or tracking accuracy.
Use the result as a starting point, then compare your real weight trend and energy over 2-4 weeks before making small adjustments.
Should I use steady calories or a flexible weekly schedule?
Use steady calories for simplicity, and use a flexible weekly schedule when weekends or training days need more room.
Both schedule styles keep the same weekly calorie total. The flexible schedule only changes how those calories are distributed across the week.
When should I avoid aggressive calorie targets?
Avoid aggressive targets when they push calories very low or require a timeline that feels hard to sustain.
A slower goal date, mild deficit, or professional guidance may be more appropriate when the calculator shows safety warnings.
Guides
FAQ
How does this calorie calculator estimate daily calories?
It estimates BMR with the Mifflin-St Jeor formula, multiplies by activity level to estimate TDEE, then adjusts for your goal.
Are my inputs saved?
No. Calculator inputs and results stay in your browser and are not stored.
Is this medical advice?
No. Results are educational estimates and are not medical advice.