Active · 1.725× Multiplier · Mifflin-St Jeor
TDEE Calculator — Active Lifestyle
Pre-set for an active lifestyle (hard exercise 6–7 days per week). The 1.725× multiplier is applied to your BMR. Adjust if your training frequency is lower.
Nutrition Priorities for Active Individuals
Active individuals burning 2,500–3,200+ kcal/day have meaningfully higher nutrient needs than sedentary adults. Underfuelling — eating too far below TDEE — impairs performance, recovery, and long-term body composition even when fat loss is the goal.
For active Singaporeans, protein intake of 1.6–2.0g per kg of body weight is essential for muscle repair and growth. Carbohydrates remain the primary fuel for high-intensity training — do not over-restrict them if you train most days.
Hydration is also critical. Singapore's tropical climate increases sweat losses significantly. Active individuals should aim for at least 2.5–3.5 litres of water per day, adjusting upward for outdoor training sessions.
Calorie Targets by Goal
Fat Loss
TDEE − 300–500 kcal
Preserve performance
Maintenance
TDEE
Optimal performance
Muscle Gain
TDEE + 300–500 kcal
Lean bulk
Active individuals should avoid deficits larger than 500 kcal/day to preserve lean muscle and training performance.
Frequently Asked Questions
How active do I need to be for the active multiplier?
The active multiplier (1.725×) is appropriate if you perform hard exercise or sport 6–7 days per week. This includes people who run or lift weights most days, competitive athletes, or those with physically demanding hobbies like Muay Thai or cycling. If you exercise 3–5 days per week at moderate intensity, use the moderately active multiplier (1.55×) instead. Overestimating activity level is one of the most common reasons people fail to lose weight — when in doubt, choose a lower multiplier.
Should I eat more on training days?
Calorie cycling — eating more on training days and less on rest days — can optimise performance and recovery for active individuals. On training days, increase carbohydrates by 50–100g to fuel and replenish glycogen. On rest days, slightly reduce calories by 100–200 kcal. However, for most Singaporeans, the simplest approach is using an average daily TDEE and eating consistently. Only advanced athletes typically benefit meaningfully from day-to-day calorie cycling.