CalculationTime

Calorie Calculator

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Your numbers, formula and explanation together

Calorie Calculator: 2,252 kcal/day. BMR 1,743 kcal/day x activity 1.45 = maintenance 2,527 kcal/day. Goal change -0.25 kg/week adjusts -275 kcal/day.

Formula applied

The exact method behind this answer

CalculationTime keeps the method visible so the number can be checked instead of blindly trusted.

Mifflin-St Jeor BMR = 10w + 6.25h - 5a + sex constant. Maintenance = BMR x activity. Goal adjustment = kg/week x 7700 / 7.
  1. Apply the formulaMifflin-St Jeor BMR = 10w + 6.25h - 5a + sex constant. Maintenance = BMR x activity. Goal adjustment = kg/week x 7700 / 7.2,252 kcal/dayBMR 1,743 kcal/day x activity 1.45 = maintenance 2,527 kcal/day. Goal change -0.25 kg/week adjusts -275 kcal/day.

Your live breakdown

Current inputs in the calculation

These values come from the controls above and update when the calculator changes.

Sex code
1 1 male, 2 female
Used for the Mifflin-St Jeor BMR constant.
Age
35 years
Age in years.
Body weight
80 kg
Current body weight.
Height
178 cm
Standing height.
Activity factor
1.45 multiplier
Multiplier applied to BMR for maintenance calories.
Goal change
-0.25 kg/week
Negative for loss, positive for gain.

Resulting answer

2,252 kcal/day

BMR 1,743 kcal/day x activity 1.45 = maintenance 2,527 kcal/day. Goal change -0.25 kg/week adjusts -275 kcal/day.

Answer
2,252 kcal/day
Live support
BMR 1,743 kcal/day x activity 1.45 = maintenance 2,527 kcal/day. Goal change -0.25 kg/week adjusts -275 kcal/day.

Assumptions used

What this answer assumes

Estimate only. Energy needs vary with measurement accuracy, activity and physiology.

  • Uses Mifflin-St Jeor and a 7700 kcal/kg planning rule.
  • Activity factor and goal change are estimates.
  • Not medical, dietetic or sports-performance advice.

Master’s Tip

How to use the result well

Treat the result as a starting target and compare it with real body-weight trend data over several weeks.

Printable record

What belongs in the saved calculation

Save the inputs, result, formula, assumptions, page URL and date together so the calculation can be reviewed later.

Sex code
1 1 male, 2 female
Used for the Mifflin-St Jeor BMR constant.
Age
35 years
Age in years.
Body weight
80 kg
Current body weight.
Height
178 cm
Standing height.

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Explain it like I'm 12

Calorie Calculator estimates BMR, maintenance calories and a goal-adjusted daily calorie target from visible inputs.

Formula

Mifflin-St Jeor BMR = 10w + 6.25h - 5a + sex constant. Maintenance = BMR x activity. Goal adjustment = kg/week x 7700 / 7.

Worked example

80 kg, 178 cm, age 35, male and activity 1.45 gives maintenance from BMR x activity, then adjusts for the weekly goal.

Professional note

Treat the result as a starting target and compare it with real body-weight trend data over several weeks.

Regional and unit assumptions

Health education estimate using metric inputs. Seek professional advice for medical, eating-disorder, pregnancy, adolescent or clinical needs.

Assumptions and limitations

Methodology & Accuracy

How this calculator is checked

CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.

Formula used

Mifflin-St Jeor BMR = 10w + 6.25h - 5a + sex constant. Maintenance = BMR x activity. Goal adjustment = kg/week x 7700 / 7.

Standard or basis

Health education estimate using metric inputs. Seek professional advice for medical, eating-disorder, pregnancy, adolescent or clinical needs.

Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.

Master's Tip

Treat the result as a starting target and compare it with real body-weight trend data over several weeks.

Related calculators

These cards are resolved from calculator data, category context and live-route status so the page links to useful next steps without hand-built link clutter.

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Questions

Is TDEE exact?

No. It estimates average daily energy expenditure. Real expenditure varies by body composition, training, health and tracking accuracy.

What activity factor should I use?

Use a conservative factor first, then adjust after tracking weight and intake over time.

Calculation note

Calorie estimates are useful when the formula and activity assumption are visible enough to adjust.

Calorie targets needs assumptions beside the result

The calculator keeps the input values, formula trail and limitation note visible so the result can be checked later instead of treated as a magic number.

The printable record is part of the calculator

A useful result is one that can be compared with a statement, plan, workout log, timetable or worksheet after the page is closed.