Health category
Fitness, nutrition, pregnancy, sleep, and wellness calculators.
Calorie Calculator
Estimate your basal metabolic rate and daily calorie needs for maintenance, weight loss, or weight gain based on your body metrics and activity level.
BMR
1,783 cal/day
Maintenance
2,763 cal/day
Weight Loss
2,263 cal/day
About 500 calories below maintenance
Weight Gain
3,263 cal/day
About 500 calories above maintenance
Based on the Mifflin-St Jeor equation and a moderately active activity level.
EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.
Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.
Learn more about our review process on the EveryCalc methodology page.
How this calculator works
What this page estimates
This Calorie Calculator is built to give a quick, browser-based estimate for calorie. Estimate your basal metabolic rate and daily calorie needs for maintenance, weight loss, or weight gain based on your body metrics and activity level. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.
Calculation approach
The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For health tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.
Example workflow
For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.
Practical checks
- Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
- Run a low, base, and high case when the inputs are estimates.
- Check the related calculators below when the next decision depends on a different assumption.
How to interpret the calorie result
Best use
Use the result as an informational wellness estimate that can help organize measurements, targets, or timing before a conversation with a clinician.
Cross-check
Compare the output with your own records, device readings, lab values, medication instructions, or guidance from a qualified health professional.
Watch for
Do not use this page to diagnose, treat, or ignore symptoms. Health calculators are most useful when they make questions clearer, not when they replace care.
This page belongs to the Health calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.
Before relying on this calorie estimate
Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.
Use current measurements
Recent weight, height, age, activity, nutrition, sleep, or timing inputs matter more than remembered estimates.
Look for context
A calculator can organize a wellness number, but it cannot read symptoms, medical history, medications, or lab results.
Escalate high-impact questions
Use clinical guidance for pregnancy, dosage, heart, risk, illness, or treatment decisions.
Rerun this page when measurements change, a clinician gives new guidance, or the result is being used for a new goal.
How to Use
- Enter your age and select your gender.
- Choose your preferred weight and height units, then enter your measurements.
- Pick the activity level that best matches your typical week.
- Review your estimated BMR, maintenance calories, and calorie targets for losing or gaining weight.
Frequently Asked Questions
What is BMR?
BMR stands for basal metabolic rate. It is an estimate of how many calories your body burns each day at complete rest just to support essential functions like breathing, circulation, and temperature regulation.
What is TDEE?
TDEE means total daily energy expenditure. It takes your BMR and multiplies it by an activity factor to estimate how many calories you burn in a typical day, including movement and exercise.
How accurate is the Mifflin-St Jeor equation?
The Mifflin-St Jeor equation is one of the most widely used formulas for estimating calorie needs and is generally considered more accurate than older formulas for many adults. It still provides an estimate, so your real calorie needs may vary.
Why does the calculator show a 500 calorie adjustment for weight loss or gain?
A 500 calorie daily deficit or surplus is a common rule of thumb because it roughly corresponds to about 1 pound of weight change per week for many people. Actual results can differ based on metabolism, adherence, and body composition.
Should I eat exactly the maintenance calories every day?
Not necessarily. Day-to-day intake can fluctuate. Maintenance calories are a useful average target over time, and you can adjust up or down after tracking your weight, hunger, and activity for a few weeks.
Related Calculators
More Health Calculators
Browse all health →Dog Age Calculator
Convert dog years to human years with a modern size-based formula, life stage guidance, and lifespan ranges for different dog sizes.
Bra Size Calculator
Estimate your bra size in US, UK, and EU formats from underbust and bust measurements, with sister sizes and a quick fit guide.
Wind Chill & Heat Index Calculator
Calculate how cold or hot it really feels with official NWS wind chill and heat index formulas, plus safety risk levels.
Age Calculator
Calculate exact age in years, months, and days from a birth date. Also see total months, weeks, days, and your next birthday countdown.
BAC Calculator
Estimate blood alcohol content using body weight, gender, drink type, number of drinks, and hours since your first drink.
Pregnancy Due Date Calculator
Estimate your due date from your last menstrual period, conception date, or IVF transfer date, with trimester milestones and a week-by-week timeline.
Keep exploring
Next steps in Health
Previous calculator
Caffeine Half-Life Calculator
Track caffeine from coffee, tea, cola, and energy drinks. See how much is still in your system now, at bedtime, and when to stop for better sleep.
Next calculator
Calories Burned Calculator
Estimate calories burned from workout duration, body weight, and activity type using standard MET values.