CalculationTime keeps the method visible so the number can be checked instead of blindly trusted.
BMR = 10W + 6.25H − 5A + S, where S is +5 for male equation and −161 for female equation. TDEE = BMR × activity factor. Daily target = TDEE + weekly kg change × 7,700 ÷ 7.
Apply the formulaBMR = 10W + 6.25H − 5A + S, where S is +5 for male equation and −161 for female equation. TDEE = BMR × activity factor. Daily target = TDEE + weekly kg change × 7,700 ÷ 7.2,151 kcal/day targetBMR 1,743 × activity 1.55 = TDEE 2,701 kcal/day. Goal adjustment -550 kcal/day.
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Current inputs in the calculation
These values come from the controls above and update when the calculator changes.
The visible assumptions define the boundary of this calculation.
This is a population estimate, not a medical prescription.
Activity factor is approximate.
Energy balance is simplified using about 7,700 kcal per kg of body mass change.
Master’s Tip
How to use the result well
Master’s Tip: use the number as a starting estimate, then compare against 2-4 weeks of real weight and intake tracking.
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Sex for equation
Male equation
Age
35 years
Weight
80 kg
Height
178 cm
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Explain it like I'm 12
The TDEE calculator estimates BMR with Mifflin-St Jeor, multiplies by activity factor, then applies the selected weekly deficit or surplus. Use 0 kg/week for maintenance calories.
BMR = 10W + 6.25H − 5A + S, where S is +5 for male equation and −161 for female equation. TDEE = BMR × activity factor. Daily target = TDEE + weekly kg change × 7,700 ÷ 7.
Worked example
An 80 kg, 178 cm, 35-year-old using the male equation has BMR about 1,730 kcal/day. At 1.55 activity, TDEE is about 2,682 kcal/day before goal adjustment.
Professional note
Master’s Tip: use the number as a starting estimate, then compare against 2-4 weeks of real weight and intake tracking.
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
This is a population estimate, not a medical prescription.
Activity factor is approximate.
Energy balance is simplified using about 7,700 kcal per kg of body mass change.
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
BMR = 10W + 6.25H − 5A + S, where S is +5 for male equation and −161 for female equation. TDEE = BMR × activity factor. Daily target = TDEE + weekly kg change × 7,700 ÷ 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
Master’s Tip: use the number as a starting estimate, then compare against 2-4 weeks of real weight and intake tracking.
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