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How It Works
Harris-Benedict vs Mifflin-St Jeor: Harris-Benedict (1919) tends to overestimate BMR by 5-10% for modern populations. Mifflin-St Jeor (1990) is generally more accurate and is the equation used by most dietitians.
Climate Adjustment: Hot climates like Austin summers can increase BMR by 5-15% due to thermoregulation. The tool adds 100-300 calories based on your selection.
Activity Multipliers: These are based on the classic PAL (Physical Activity Level) scale. Be honest - most people overestimate their activity level.
Tips: Start with the Mifflin-St Jeor result. Track your actual weight for 2-3 weeks. If you are losing/gaining faster than expected, adjust by 100-200 calories.
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