BMR & TDEE Calculator for Women
Estimate resting energy expenditure and total daily energy expenditure for an adult using the Mifflin–St Jeor equation. The tool supports women and men and makes the activity multiplier visible.
Written and checked by TheToolNet Editorial Team · Last reviewed: September 27, 2026 · Editorial method
This result is a general educational estimate, may be inaccurate for you, and is not medical advice or a diagnosis. Consult a qualified doctor or other appropriate licensed clinician before using it for treatment, diet, exercise, medication, pregnancy care, or a personal health target.
Estimate BMR and TDEE
Mifflin–St Jeor BMR formula for women
RMR = 10 × kg + 6.25 × cm − 5 × age − 161. The corresponding male equation uses +5 instead of −161. The original adult equation and coefficients are documented in the Mifflin–St Jeor study.
How TDEE is calculated
The calculator multiplies estimated resting energy by the selected activity factor. This produces a planning estimate, not a measurement. A systematic review found Mifflin–St Jeor comparatively reliable for many adults but also reported meaningful individual errors and underrepresentation of some groups.
Activity level is the largest guess
Exercise frequency alone does not capture occupation, walking, caregiving, training volume, or other movement. The output therefore shows a ±10% band rather than presenting one calorie number as exact.
Calorie deficit comparison
If you enter a current intake, the calculator reports only its arithmetic difference from estimated TDEE. It does not prescribe a deficit, predict pounds lost, or set a safe minimum. Weight change is not perfectly linear, and medical conditions, pregnancy, lactation, medications, eating disorders, and athletic energy availability require individualized professional guidance.
Not for teenagers
The source equation was developed in adults. This calculator limits age to 20 or older and does not create a teenage calorie target.
Frequently asked questions
Is BMR the same as TDEE?
No. BMR or resting energy estimates energy used at rest. TDEE adds an activity multiplier to approximate total daily expenditure.
How should I check the estimate?
Keep conditions consistent and compare average intake and body-weight trends over several weeks. Short-term scale movement often reflects water rather than tissue change.