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Calorie Needs for Women Over 40

Metabolism declines more slowly with age than commonly believed — recent research (Pontzer et al., 2021) shows adult energy expenditure is stable until about 60. What does change after 40 is typically muscle mass and activity, both of which you can act on.

Calorie reference table

Estimates below assume age 45, height 163 cm, and a lightly active (×1.375) activity level — adjust expectations up or down if your stats differ, or get an exact figure with the TDEE calculator.

WeightBMRMaintenanceCut (−500)Lean bulk (+300)
50 kg (110 lb)1133155810581858
60 kg (132 lb)1233169511951995
70 kg (154 lb)1333183313332133
80 kg (176 lb)1433197014702270
90 kg (198 lb)1533210816082408
100 kg (220 lb)1633224517452545

Make it personal: these are averages for one illustrative profile. The TDEE calculator takes your exact age, height, weight and activity — it takes about 20 seconds.

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Frequently asked questions

How were these numbers calculated?

With the Mifflin-St Jeor equation at age 45, height 163 cm, and a lightly active (×1.375) activity multiplier, then rounded. Your own height, age and activity shift the figures — use the calculator for a personal estimate.

Are these calorie figures safe to follow?

They're educational reference points, not prescriptions. Confirm any target against 2–3 weeks of real-world weight data, and involve a physician or registered dietitian for medical conditions, pregnancy, or anyone under 18.

Medical disclaimer: CaloriesKit provides educational estimates only and is not medical, nutritional, or fitness advice. Calculators use population-level formulas that may not reflect your individual needs. Consult a physician or registered dietitian before changing your diet or exercise routine, especially if you have a medical condition, are pregnant, or are under 18.