Calculator
Calorie Maintenance Calculator
Estimate maintenance calories from body size, age, sex, activity, and adjustment goal.
AnswerCanvas Calculator
Calorie Maintenance Calculator
Estimated maintenance calories
2,589 cal/day
Based on an estimated BMR of 1,670 cal/day (Mifflin-St Jeor) at your specified activity level.
- Estimated BMR
- 1,670 cal/day
- Activity multiplier
- 1.550
- Estimated maintenance calories
- 2,589 cal/day
- Formula used
- Mifflin-St Jeor
Result chart
Formula
Mifflin-St Jeor equation (widely regarded as one of the more accurate population-level BMR formulas): Men: 10×weight(kg) + 6.25×height(cm) − 5×age + 5. Women: 10×weight + 6.25×height − 5×age − 161. Maintenance calories = BMR × activity multiplier, accounting for calories burned through daily activity and exercise beyond resting metabolism. This is an educational population-average estimate - individual metabolism varies, and this is not personalized medical or nutritional advice.
Worked example
A 75kg, 172cm, 32-year-old male at moderate activity (1.55): BMR is about 1,670 cal/day, with estimated maintenance calories around 2,589 cal/day.
Money-page insight
Activity multiplier assumptions have a larger effect on the final estimate than most people expect - moving from "sedentary" (1.2) to "moderately active" (1.55) increases the maintenance estimate by nearly 30%, which is why honestly assessing your actual activity level matters more than precision in the BMR formula itself.
Calculation history
Stored locally on this deviceHow the calorie maintenance calculator works
How to use this calculator
Adjust the assumptions on the left and the result updates instantly. Use the summary as a planning estimate, then compare it with quotes, local rules, lender disclosures, or professional guidance for decisions involving taxes, loans, construction, or health.
Learn more
Stage 1 - Inputs
Collect the required maintenance calorie estimation (educational) values and confirm that each value is physically and logically possible.
Stage 2 - Formula
Mifflin-St Jeor equation (widely regarded as one of the more accurate population-level BMR formulas): Men: 10×weight(kg) + 6.25×height(cm) − 5×age + 5. Women: 10×weight + 6.25×height − 5×age − 161. Maintenance calories = BMR × activity multiplier, accounting for calories burned through daily activity and exercise beyond resting metabolism. This is an educational population-average estimate - individual metabolism varies, and this is not personalized medical or nutritional advice.
Stage 3 - Substitute values
Replace each variable in the formula with the current input value. This keeps the calculation transparent and easy to audit.
Stage 4 - Intermediate calculations
Calculate the supporting values first, such as totals, rates, balances, volumes, or ratios, before producing the final result.
Common mistakes
- Mixing units, such as monthly and annual rates, inches and feet, or gross and net income
- Entering rounded guesses when exact quotes or measurements are available
- Ignoring fees, taxes, risk factors, local rules, or physical constraints
- Treating an estimate as a final professional decision
Tips
- Change one input at a time to understand sensitivity
- Use conservative assumptions when the result affects safety, debt, taxes, or health
- Save or print the result with assumptions before comparing alternatives
- Recheck units whenever a result looks surprisingly large or small
Calorie Maintenance Calculator mastery
Estimate maintenance calories from body size, age, sex, activity, and adjustment goal.
Use this health calculator as a working model: enter realistic inputs, read the primary answer first, then use the supporting rows to understand what changed and why.
Read the result correctly
Health calculator results are educational indicators, not diagnoses. Use the output to understand ranges and follow-up questions.
Improve accuracy
Enter current measurements consistently and avoid mixing metric and imperial units unless the calculator explicitly converts them.
Use it professionally
Use results as conversation starters with qualified clinicians, especially for medical, pregnancy, medication, or risk-related topics.
Expert suggestions
Professional perspective
How to get more value from the calorie maintenance calculator
Health calculators should help you understand a measurement, not replace clinical care. The safest use is to combine the result with context and qualified guidance.
Use current measurements
Old or inconsistent measurements can make a health estimate misleading.
Do not diagnose from one number
Most health metrics need age, history, symptoms, labs, body composition, and clinical context.
Track trends carefully
If you monitor change over time, keep measurement conditions consistent so trends mean something.
Learning path
What to understand next
- What the metric measures
- Normal ranges and limitations
- Personal context
- When to seek professional guidance
Health insight guide
Understand the answer
Use the calorie maintenance calculator as a decision aid, not just a number.
Health calculators are educational screening tools. They organize measurements and ranges, but they do not diagnose, treat, or replace professional medical judgment.
The result can help interpret a measurement, estimate a general range, or frame a question for a healthcare provider.
Age, sex, body size, activity, pregnancy status, medical history, medications, hydration, and measurement method can affect interpretation.
Use consistent units, current measurements, and the intended population group before reading the result.
Seek qualified medical guidance for symptoms, abnormal results, pregnancy questions, medication decisions, or urgent concerns.
Accuracy checklist
- Confirm the calculator is appropriate for your age and situation.
- Use recent measurements taken consistently.
- Do not use a single metric as a diagnosis.
- Bring the inputs and result to a clinician if the result concerns you.
How professionals use this
- Use the output as structured context for a healthcare conversation.
- Pair the result with history, symptoms, and clinical measurements.
- Avoid making treatment decisions from calculator output alone.
- Document measurement conditions when tracking changes over time.
Frequently asked questions
- How accurate is the Mifflin-St Jeor formula?
- It's generally considered one of the more accurate population-level BMR prediction formulas in research comparisons, but like all such formulas, it estimates based on population averages - individual metabolism can vary meaningfully from the formula's prediction due to factors like muscle mass, genetics, and health conditions.
- What activity level should I select?
- Sedentary (1.2) means little to no exercise; light (1.375) is light exercise 1-3 days/week; moderate (1.55) is moderate exercise 3-5 days/week; very active (1.725) is hard exercise 6-7 days/week; extremely active (1.9) is very hard exercise plus physical job - choose honestly, since overestimating activity is a common source of inaccurate calorie targets.
- Is this the same as a calorie target for weight loss or gain?
- No - this estimates MAINTENANCE calories (the amount that would keep weight stable). For weight loss or gain goals, see the weight loss calculator, which adjusts from this maintenance baseline.
- Is the Calorie Maintenance Calculator medical advice?
- No. Health calculators are educational tools. They can organize measurements and ranges, but they do not diagnose, treat, or replace professional medical judgment.
- Why can health calculator results be different for different people?
- Age, sex, body size, pregnancy, medical history, medication use, activity level, hydration, and measurement method can change what a result means.
- What should I do if the result looks concerning?
- Repeat the inputs to rule out entry errors, keep the result with the assumptions visible, and discuss it with a qualified healthcare professional if it concerns you.
- Should I use one health number by itself?
- Usually no. A single metric is most useful when combined with symptoms, history, trend over time, clinical measurements, and professional context.
- How can I make health calculator results more reliable?
- Use recent measurements, consistent units, the intended population group, and the same measurement conditions when tracking changes over time.
- What does the Calorie Maintenance Calculator calculate?
- Estimate maintenance calories from body size, age, sex, activity, and adjustment goal.
- How should I read the Calorie Maintenance Calculator result?
- Read the primary answer first, then review the supporting values, formula notes, assumptions, and expert suggestions. The supporting values explain why the answer moved and which inputs deserve more attention.