Physical Activity Coefficient Calculator: PAL & TDEE

This calculator works out your Physical Activity Level (PAL) coefficient—the number you multiply by your Basal Metabolic Rate (BMR) to estimate your total daily energy expenditure (TDEE). You enter your activity level from a standard list, and the calculator returns the corresponding PAL value, which you can then use in any TDEE formula.

Formula

The PAL coefficient is a fixed multiplier assigned to each activity category:

• Sedentary (1.2): desk job, little or no exercise
• Lightly active (1.375): light exercise/sports 1–3 days per week
• Moderately active (1.55): moderate exercise/sports 3–5 days per week
• Very active (1.725): hard exercise/sports 6–7 days per week
• Extra active (1.9): very hard exercise/sports plus a physical job or twice-a-day training

There is no calculation—the coefficient is a lookup value. It is then used in the TDEE equation:

TDEE = BMR × PAL

Where BMR is your basal metabolic rate (kcal/day) and PAL is the coefficient above.

Worked Example

Using the default selection Moderately active:

1. Choose the category from the list: Moderately active = 1.55
2. Multiply your BMR by 1.55. For a BMR of 1,600 kcal/day: 1,600 × 1.55 = 2,480 kcal/day

The calculator returns 1.55 as the PAL coefficient, which you then use in your own TDEE calculation.

How to Choose the Right Coefficient

Select the category that best matches your average daily activity over a week, not just your workout days. Consider both your job and your leisure activity.

• If you sit most of the day and do no formal exercise, choose Sedentary.
• If you walk occasionally or do light exercise 1–3 times a week, choose Lightly active.
• If you exercise 3–5 times a week at moderate intensity, choose Moderately active.
• If you exercise hard 6–7 times a week, choose Very active.
• If you have a physically demanding job or train twice daily, choose Extra active.

When in doubt, choose the lower category. Most people overestimate their activity level, which leads to an overestimated calorie need.

Common Mistakes and Misconceptions

A frequent error is using the PAL coefficient as if it were a calorie number. It is a multiplier, not a calorie count. Another mistake is applying the same coefficient to everyone in a category—the categories are broad, and individual variation is large.

Also, the PAL values (1.2 to 1.9) are derived from research on groups, not individuals. They are estimates, not precise measurements. For weight management, treat the resulting TDEE as a starting point and adjust based on actual weight changes over a few weeks.

Limitations of the PAL Approach

The PAL system relies on self-reported activity, which is often inaccurate. It does not account for the intensity of exercise beyond the broad category, nor for differences in body composition, age, or genetics. For example, two people who both select “Moderately active” may have very different actual energy expenditures.

More precise methods exist, such as doubly labeled water or heart-rate monitoring, but they are expensive and not practical for everyday use. The PAL coefficient remains a useful, simple tool for estimation.

Alternatives to PAL

Instead of using a single coefficient, you can calculate TDEE by adding the energy cost of specific activities to your BMR. For instance, walking at 3.5 mph burns about 4 METs (metabolic equivalents), and you can compute calories burned per hour as MET × body weight (kg). This method is more detailed but requires tracking each activity.

Another alternative is using a fitness tracker that estimates calorie expenditure based on heart rate and movement. These devices use proprietary algorithms, so accuracy varies, but they can provide a more personalized estimate than a fixed PAL value.

Frequently Asked Questions

What is the difference between PAL and MET?

PAL is a single daily average multiplier for all activities, while MET is the energy cost of a specific activity relative to resting. For example, sitting has a MET of 1.0, and running at 6 mph has a MET of about 9.8. PAL aggregates all activities into one number.

Can I use the same PAL for weight loss and maintenance?

Yes, but you would adjust your calorie intake. For weight loss, you typically subtract 300–500 kcal from your TDEE, but the PAL coefficient itself stays the same unless your activity level changes.

Why are the PAL values so broad?

The values come from studies that measured total energy expenditure in groups of people with similar activity patterns. They are averages, so they may not fit an individual perfectly. The broad categories make the tool simple to use.

Do I need to know my BMR to use this calculator?

No. This calculator only gives you the coefficient. You need your BMR separately to compute TDEE. Many online calculators combine both steps, but here you can get the PAL value directly.

Is the “extra active” category ever accurate?

It is rare. It applies to athletes in intense training, manual laborers, or people with jobs that involve constant physical exertion. If you are not sure, you likely do not fit this category.

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sel activity | Activity Level | Sedentary=1.2, Lightly active=1.375, Moderately active=1.55, Very active=1.725, Extra active=1.9
out pal | PAL coefficient | - | activity | 2