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TDEE for a 120 lb Sedentary man

TDEE for a 120 lb Sedentary man | Training Guide

#Health#Calculator#SportsScience#Training#Athlete

[Spring 2026] How many calories should a 120 lb sedentary man eat per day? Estimated TDEE: ~1779 kcal. See your custom macro targets for weight loss or muscle gain. Master your fitness with our tdee 120lb sedentary male analytics.

Basic Info

Body Measurements (Optional, for Body Fat & WHR)

💡 Enter Neck, Waist (and Hips) to unlock Body Fat % and Waist-to-Hip Ratio.

🔥 Energy Expenditure

Basal Metabolic Rate (BMR)1483 kcal
Daily Energy Expenditure (TDEE)1779 kcal

⚖️ Weight Analysis

BMI
17
體重過輕
Ideal Weight Range
~ 73.2 kg

📏 Body Composition

🔒
Enter measurements
to unlock Body Fat

BMI Categories (WHO Standard)

CategoryBMI RangeHealth Risk
Underweight< 18.5Moderate
Normal Weight18.5 - 24.9Low
Overweight25.0 - 29.9Increased
Obesity I30.0 - 34.9High
Obesity II35.0 - 39.9Very High

Specialized Versions

TDEE for a 240 lb Sedentary man
TDEE for a 240 lb Sedentary man
TDEE for a 240 lb Sedentary woman
TDEE for a 240 lb Sedentary woman
TDEE for a 240 lb Lightly Active man
TDEE for a 240 lb Lightly Active man
TDEE for a 240 lb Lightly Active woman
TDEE for a 240 lb Lightly Active woman
TDEE for a 240 lb Moderately Active man
TDEE for a 240 lb Moderately Active man
TDEE for a 240 lb Moderately Active woman
TDEE for a 240 lb Moderately Active woman
TDEE for a 240 lb Very Active man
TDEE for a 240 lb Very Active man
TDEE for a 240 lb Very Active woman
TDEE for a 240 lb Very Active woman
TDEE for a 240 lb Extremely Active man
TDEE for a 240 lb Extremely Active man
TDEE for a 240 lb Extremely Active woman
TDEE for a 240 lb Extremely Active woman
TDEE for a 250 lb Sedentary man
TDEE for a 250 lb Sedentary man
TDEE for a 250 lb Sedentary woman
TDEE for a 250 lb Sedentary woman
TDEE for a 250 lb Lightly Active man
TDEE for a 250 lb Lightly Active man
TDEE for a 250 lb Lightly Active woman
TDEE for a 250 lb Lightly Active woman
TDEE for a 250 lb Moderately Active man
TDEE for a 250 lb Moderately Active man

Scientific Methodology & Accuracy

Our tools are built using peer-reviewed research and industry-standard formulas. This specific calculator utilizes BMR CALCULATOR metrics validated by sports science organizations like the ACSM and NSCA.
Gait analysis algorithms can now predict injury risk with high accuracy by identifying subtle asymmetries.

Verified Formulas
Peer Reviewed
Last Verified

Performance Concept

"Our algorithms are calibrated to mirror the exacting standards of professional sports science."

Expert Protocol

"Quality of movement always trumps the quantity of weight or miles. Focus on your form first. These calculations are estimates. Always consult with a certified coach before making drastic training changes."

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How to Use This Tool

  • 1

    Enter your current body weight, height, age, and sex into the TDEE for a 120 lb Sedentary man.

  • 2

    Select the activity level that best matches your weekly exercise volume (err conservative if unsure).

  • 3

    Use the TDEE output as your maintenance calories. Set a 15–20% deficit for fat loss, or 5–10% surplus for muscle gain.

  • 4

    Recalculate every 4–6 weeks as body weight changes alter your BMR and TDEE.

Key Terminology

BMR (Basal Metabolic Rate)
Calories burned at complete rest to sustain vital functions. Calculated via the Mifflin-St Jeor equation (most accurate for the general population).
TDEE (Total Daily Energy Expenditure)
BMR multiplied by an activity factor (1.2–1.9). Your total daily caloric requirement for body weight maintenance.
1RM (One Rep Maximum)
Maximum weight liftable for a single repetition. Used to calculate training percentages: 65–80% for hypertrophy, 85–95% for strength.
Heart Rate Reserve (HRR)
Difference between maximum and resting heart rate. Used in the Karvonen formula for calculating precise training zones.
VO2 Max
Maximum oxygen utilization per minute per kg of body weight. Declines ~1%/year after age 25 without training; trainable through structured aerobic exercise.
Progressive Overload
Gradually increasing training stimulus (weight, reps, or sets) by 2.5–5% when all target reps are completed. The fundamental driver of adaptation.
Body Composition
The ratio of fat mass to lean mass. More informative than BMI for athletes — a 90kg athlete with 10% body fat is categorically different from a 90kg sedentary individual.

Frequently Asked Questions

Q1 Which BMR formula is most accurate?

The Mifflin-St Jeor equation is validated as the most accurate for the general population (within 10% for ~82% of people). The Harris-Benedict equation is slightly less accurate due to its older dataset. Neither accounts for body composition — leaner individuals have higher actual BMR than predicted.

Q2 How do I calculate my TDEE accurately?

Multiply your BMR by your activity multiplier: Sedentary (1.2), Light exercise 1–3 days/week (1.375), Moderate 3–5 days/week (1.55), Hard 6–7 days/week (1.725), Physical job + training (1.9). Endurance athletes often need the 1.725–1.9 range.

Q3 What percentage of 1RM should I use for hypertrophy?

65–80% of your 1RM, for 8–12 reps per set, with 60–90 seconds rest between sets. This rep range creates optimal mechanical tension and metabolic stress for muscle growth according to NSCA guidelines.

Q4 How do I find my maximum heart rate accurately?

The most accurate method is a graded exercise test to exhaustion. Field tests (sprint finish of a 5K race) approximate this. The 220-age formula carries ±10–12 BPM error — use the Tanaka formula (211 − 0.64 × age) for endurance athletes.

Laboratory Insight: Specialized precision metrics from the Human Optimization Wing provide a superior baseline for your training goals. For absolute strength: train at 85–95% 1RM, 1–5 reps, 3–5 sets, 3–5 minute full rest intervals. This induces neural rather than hypertrophic adaptations.

TDEE for a 120 lb Sedentary man

Based on standard Mifflin-St Jeor estimates (height ~178cm, age ~35):

GoalDaily Calories
Fat Loss (Cut)~1423 kcal (−20%)
Maintenance~1779 kcal
Muscle Gain (Bulk)~1957 kcal (+10%)

Why Activity Level Matters So Much

Note: These are estimates. Individual metabolism varies. Adjust based on 2–4 weeks of real-world weight tracking.

Key Performance Benchmarks

Scientific Verification

Use Cases / Example Scenarios

1
Cutting Phase Planning
Scenario

Calculate your TDEE and set a 15–20% caloric deficit to trigger fat loss while preserving lean muscle mass.

2
Strength Program Design
Scenario

Use 1RM-derived percentages to program your squat, bench, and deadlift with scientifically-validated rep schemes for your goal (strength vs hypertrophy).

3
Heart Rate Zone Setup
Scenario

Calculate your personalized Karvonen zones and validate them against a 20-minute field test before starting a new training block.

4
Progress Benchmarking
Scenario

Re-test your 1RM or TDEE every 6–8 weeks. Track relative strength (1RM ÷ bodyweight) to account for body composition changes.

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⚕️ Medical Disclaimer: All values provided by this calculator are population-based educational estimates and do not constitute medical advice. Individual physiology, health conditions, and medication use vary significantly. Consult a licensed healthcare provider or registered dietitian before making changes to your diet, supplementation, or exercise program.