Daily Energy Expenditure Men Estimate Calculator
Estimate a man's daily energy expenditure from weight, height, age, and an activity multiplier. The result is RMR × activity factor, not an individual calorie prescription.
How the result changes
Only weight changes; all other inputs stay at your current values. The line illustrates the formula across the shown range. This is not a forecast of real-world outcomes.
About this calculation
Estimate total daily energy expenditure for an adult man by combining a predicted resting energy expenditure with an activity multiplier. The answer is a rough scenario in kilocalories per day, not a direct measurement or a personalized eating plan.
Formula
RMR × chosen activity multiplier
Worked example
With Weight: 75 kg, Height: 175 cm, Age: 30 years, Activity multiplier: 1.4, estimated expenditure is 2,378.25 kcal/day.
The two steps in this calculation
First, resting energy expenditure is estimated with the Mifflin–St Jeor equation: 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) + 5. Second, the estimate is multiplied by the activity factor you enter. A factor of 1 would leave the resting value unchanged; a larger factor models additional energy used across the day.
At 75 kg, 175 cm, and age 30, the resting estimate is 1,698.75 kcal/day for men. With the default 1.4 activity factor, the daily estimate is 2,378.25 kcal/day. Changing the activity factor can move the answer substantially even when the body measurements stay the same.
Choosing an activity factor
For this men’s scenario, the activity multiplier scales the predicted resting figure; it does not count workouts or measure actual movement. The NIDDK Body Weight Planner describes broad physical-activity levels around 1.4 for sedentary living up to about 2.5 for very active living. A man with mixed workdays and training days may not fit one label neatly, so try more than one plausible factor.
How to interpret the estimate
The men’s equation predicts resting expenditure and then applies the selected activity factor. Actual energy use can vary with body composition, physical work, travel, and exercise. The resulting figure is a scenario rather than an exact maintenance requirement. For a decision about diet or health, consider a model that accounts for changes over time and seek qualified guidance when appropriate.
Common questions
Is this number my resting metabolic rate?
No. For the men’s model, the resting equation is only step one; this page multiplies its prediction by the selected activity factor.
What if I am active on some days and sedentary on others?
One factor averages very different days. Try separate low and high activity scenarios instead of treating the result as a diary of each day.
Is the result a recommended calorie intake?
No. It models daily expenditure for a chosen assumption and does not set a man’s personal food or health plan.
Sources and references
Inputs
- Weight (kg)
- Height (cm)
- Age (years)
- Activity multiplier