TDEE — Total Daily Energy Expenditure — is the number of calories your body burns in a typical day, including movement. The formula treats everyone the same; the interpretation should not. This page is the TDEE calculator dialed in for women aged 60 and over: the math is identical (Mifflin-St Jeor), but the read of the result, the activity factor and the practical advice are written specifically for women 60+.
Your BMR (basal metabolic rate) drops with age and sits lower in women than in men at the same weight and height — that is built into the Mifflin-St Jeor formula. What is not built in: hormonal shifts, training history and the lean-mass percentage typical of women aged 60 and over. Two people with identical inputs can have a real TDEE 100–250 kcal apart because of those factors.
Use the result below as your starting point, not a final number. The most accurate TDEE is the one you confirm against 2–3 weeks of weight-trend data: if the trend matches your target (flat for maintenance, down ~0.5% per week for fat loss, up ~0.25% per week for a lean bulk), the calculator was right for you.
Activity factor is where most TDEE calculators mislead. 'Sedentary' (×1.2) means a desk job with almost no walking — under 5,000 steps and no training. 'Moderate' (×1.55) is 3–5 hard sessions per week plus normal daily movement. For women aged 60 and over, the honest choice is usually one notch lower than what people instinctively pick.
If you train hard but sit at a desk all day, 'light' (×1.375) is often closer to truth than 'moderate'. The under-counting of NEAT (non-exercise activity) — fidgeting, walking, standing — is the single biggest reason TDEE estimates overshoot by 200–400 kcal.
For women aged 60 and over of average height and a normal weight range, TDEE typically lands in a fairly narrow band once you pick an honest activity factor. Outliers exist — competitive athletes, manual-labour jobs, very low or very high body weight — but the calculator below will put you within ~5% of reality for most people in this group.
If your calculated TDEE feels too high (you eat at it and still gain) or too low (you eat below it and don't lose), the activity factor is almost always the culprit. Drop or raise one notch and recheck after two weeks of consistent eating.
Inside AJYX, TDEE is not a static number you set once. We recalibrate it weekly from your actual weight trend versus your actual intake, so the number drifts down as you lose fat (and your BMR genuinely drops) or up as you add lean mass. That continuous calibration matters most for women aged 60 and over, where the standard formulas have the largest blind spots.
The app pairs this living TDEE with your goal — fat loss, recomposition, maintenance, lean bulk — and gives you a daily calorie target that adapts. No more eating at a TDEE that was true six weeks and four kilos ago.
No. Mifflin-St Jeor is the same formula and is generally the most accurate equation for both sexes across age groups. What changes for women aged 60 and over is the activity factor you should honestly pick and how you should interpret the result against your weight trend.
If you train 3–5 times per week but sit most of the day, 'light' (×1.375) is usually closer to truth than 'moderate'. 'Moderate' (×1.55) fits people who train hard and also move a lot outside the gym. When in doubt, pick the lower one and adjust after two weeks of weight-trend data.
Within ~5% for most people in this group, assuming an honest activity factor. The single biggest source of error is over-estimating NEAT (daily non-training movement). Treat the number as a starting point and validate it against your weekly weight trend.
Depends on your goal. Eat at TDEE for maintenance. Subtract 300–500 kcal for fat loss. Add 200–400 kcal for a lean bulk. Recomposition sits within ±100 kcal of TDEE combined with progressive resistance training.
Yes. TDEE drops as you lose weight (less mass to move and maintain) and rises as you add lean tissue. Recalculate every 4–6 weeks of meaningful weight change, or let the AJYX app recalibrate it weekly from your real-world data.