How to use Resting Calorie Estimate
Estimate adult resting energy needs using Mifflin–St Jeor.
- Choose the operation and enter every labeled input, keeping units and the time period consistent.
- Calculate, compare the worked example below and inspect any warnings.
- Change one assumption to compare another scenario; keep the model’s limits in view.
Formula & calculation method
Mifflin–St Jeor resting estimate = 10 × kg + 6.25 × cm − 5 × age + coefficient. The available original equation coefficients are +5 and −161.
Input reference · 4 fields
These labels describe the calculation’s base units. Supported measurements can switch through the header’s region settings; follow the current workspace labels. Prefilled values are examples.
- Weight (kg)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Height (cm)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Age (years)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Equation coefficient
- Choose: Male coefficient (+5), Female coefficient (−161).
A quick example
For the male coefficient, 70 kg, 175 cm, and age 30 gives approximately 1,649 kcal/day.
Assumptions, edge cases & limits
- The model is an adult resting-energy estimate, not a daily eating target.
- It does not include activity expenditure or establish individual nutritional needs.
- For adults only, not pregnancy or breastfeeding. Individual needs vary. This is not a calorie prescription or medical assessment.
Questions about Resting Calorie Estimate
Is resting energy the same as my daily calorie needs?
No. Daily energy use also includes activity and other processes. This result is an equation estimate at rest and should not be treated as a diet prescription.
Can I use pounds and inches in the resting calorie calculator?
Yes. The region settings switch supported weight and height inputs to pounds and inches, then convert them to kilograms and centimetres for the equation. Age and the equation coefficient stay unchanged.
Are my files or inputs uploaded?
Calculation and file processing run in your browser without a processing upload. Downloads go to your device. Choosing a next-step transfer creates a temporary local copy for that workflow. Region preferences are stored separately from tool inputs. See our privacy details.
Can I use this tool for free?
Yes. No signup, subscription or payment is required to use the tool or download its output. File tools have device and size limits; a smaller batch may work better on a phone.
Method & references
Read the underlying method or measurement convention in context. These references do not imply affiliation or endorsement.
Mifflin et al. (1990), original study ↗Educational health estimates. No independent clinical review is claimed.A result or explanation needs correcting? Tell us the tool name and an example.