The Noom Calculator helps users determine the optimal number of daily calories they should consume to achieve their weight loss goals. It considers individual metabolic rates, lifestyle activities, and how aggressively they wish to pursue weight loss.
Formula of Noom Calculator
The Noom Weight Loss Calculator operates on a formula that integrates BMR, activity level, and calorie deficit for weight loss:
Calorie Intake = BMR + Activity Level – Calories for Weight Loss
Calculate BMR (Basal Metabolic Rate):
- For Men:
- BMR = 88.362 + (13.397 * weight in kg) + (4.799 * height in cm) – (5.677 * age in years)
- For Women:
- BMR = 447.593 + (9.247 * weight in kg) + (3.098 * height in cm) – (4.330 * age in years)
Determine Activity Level:
- Sedentary (little or no exercise): BMR * 1.2
- Lightly active (light exercise/sports 1-3 days/week): BMR * 1.375
- Moderately active (moderate exercise/sports 3-5 days/week): BMR * 1.55
- Very active (hard exercise/sports 6-7 days/week): BMR * 1.725
- Super active (very hard exercise/sports & physical job): BMR * 1.9
Calculate Calorie Deficit for Weight Loss:
- Common approach: reduce daily calorie intake by 500-1000 calories, aiming for a weight loss of about 0.5 to 1 kg per week.
Complete Formula:
Calorie Intake = (BMR * Activity Level) – 500
Practical Table for Daily Calorie Needs
Here’s a simplified table to help users estimate their daily calorie needs based on activity level without having to perform manual calculations each time. This table assumes a calorie deficit of 500 for weight loss.
| Activity Level | Multiplier | Example Daily Calorie Needs (70kg, 170cm, 30-year-old woman) |
|---|---|---|
| Sedentary (little or no exercise) | BMR * 1.2 | 1,800 calories |
| Lightly active (light exercise 1-3 days/week) | BMR * 1.375 | 2,070 calories |
| Moderately active (moderate exercise 3-5 days/week) | BMR * 1.55 | 2,330 calories |
| Very active (hard exercise 6-7 days/week) | BMR * 1.725 | 2,595 calories |
| Super active (very hard exercise & physical job) | BMR * 1.9 | 2,860 calories |
Example of Noom Calculator
Profile:
- Gender: Female
- Age: 30 years
- Weight: 70 kg
- Height: 170 cm
- Activity Level: Moderately active
Calculation:
- Calculate BMR:
- BMR for women = 447.593 + (9.247 * 70) + (3.098 * 170) – (4.330 * 30) = 1,394 calories
- Apply activity multiplier:
- Moderately active = BMR * 1.55 = 2,160 calories
- Subtract calorie deficit for weight loss:
- Daily calorie needs = 2,160 – 500 = 1,660 calories
Result:
- To lose weight, this individual should aim for approximately 1,660 calories per day.
Most Common FAQs
The Noom Calculator provides an estimate based on general formulas and user input. Individual results may vary.
Yes, by adjusting the calorie deficit to zero, you can use it to maintain your current weight.