RESTING METABOLIC RATE (RMR) CALCULATOR
Estimate the calories your body burns completely at rest using the clinically validated Mifflin-St Jeor equation. Built for adults 45+ in Singapore.
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This is the raw energy your body expends simply remaining alive at rest. Your estimated hourly basal burn is 68 kcal/hr.
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Frequently Asked Questions
What is Resting Metabolic Rate (RMR)?
RMR represents the minimum number of calories your body requires to sustain vital autonomic functions at complete rest—such as cellular respiration, cardiovascular circulation, and organ maintenance.
Why use the Mifflin-St Jeor formula?
Comprehensive clinical trials (Frankenfield et al., J Am Diet Assoc 2005) established Mifflin-St Jeor as the most reliable predictor of resting metabolic rate in non-athletic and masters adults, outperforming the older 1919 Harris-Benedict formula.
How does age affect RMR?
After age 30, resting metabolic rate naturally declines by approximately 2% to 3% per decade, primarily driven by the progressive loss of metabolically active muscle mass (sarcopenia). Progressive resistance training and adequate protein intake directly counteract this decline.
Turn Your Metabolic Numbers Into Real Fat Loss
Calorie targets and macronutrient splits work when paired with structured resistance training and metabolic accountability. Explore our VIP coaching tracks: