BMR Calculator for Seniors (60+)

After age 60 BMR declines more steeply — roughly 0.7% per year — largely driven by muscle loss (sarcopenia). This calculator gives an accurate baseline and pairs it with the two inputs that matter most for seniors: protein and resistance training.

Written by Marcus Reed, CISSN· Certified Sports Nutritionist (ISSN)
Medically reviewed by Dr. Amara Johnson, MD
Last reviewed April 20, 2026
5 min read

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Key Facts: BMR Calculator for Seniors

  • ✓BMR falls ~0.7%/year after 60 (vs 1–2% per decade before)
  • ✓Sarcopenia affects ~30% of adults over 60
  • ✓Adults 65+ need 1.2–1.6 g/kg protein to maintain muscle
  • ✓Two 20-minute strength sessions a week preserves most lean mass

Special Considerations for Seniors

  • ⚡Avoid aggressive deficits — prioritise muscle retention over speed
  • ⚡Leucine-rich protein sources improve anabolic response
  • ⚡Check vitamin D, B12, and thyroid if energy or weight stalls
  • ⚡Balance and mobility work reduces fall risk and supports NEAT

BMR Calculator for Seniors: Frequently Asked Questions

A 70-year-old man at 170 lb has a BMR near 1,450 kcal/day; a 70-year-old woman at 140 lb near 1,200 kcal/day. Individual variation can be ±200 kcal depending on lean mass.

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Medical Disclaimer: This calculator provides estimates based on population-level research formulas. Individual results may vary. Consult a healthcare professional before starting any diet or exercise program. This tool is not a substitute for professional medical advice.