Protein Calculator
The Protein Calculator estimates the daily amount of dietary protein adults require to remain healthy. Children, those who are highly physically active, and pregnant and nursing women typically require more protein. The calculator is also useful for monitoring protein intake for those with kidney disease, liver disease, diabetes, or other conditions in which protein intake is a factor.
ages 18 - 80
cm
kg
Special Requirements
Recommended Dietary Allowance (RDA) of Protein
Protein Needed by Age
| Age | Protein (g/day) | Description |
|---|---|---|
| 1-3 years | 13 | Toddlers |
| 4-8 years | 19 | Young children |
| 9-13 years | 34 | Pre-teens |
| 14-18 years (Girls) | 46 | Teenage girls |
| 14-18 years (Boys) | 52 | Teenage boys |
| 19-70+ years (Women) | 46 | Adult women |
| 19-70+ years (Men) | 56 | Adult men |
Extra Protein Requirements for Pregnancy and Lactation
| Status | Additional Protein (g/day) | Additional Energy (kJ/day) |
|---|---|---|
| Pregnancy Trimester 1 | 1 | 375 |
| Pregnancy Trimester 2 | 10 | 1,200 |
| Pregnancy Trimester 3 | 31 | 1,950 |
| Lactation First 6 months | 19 | 2,800 |
| Lactation After 6 months | 13 | 1,925 |
Important Notes
• RDA values are based on healthy individuals with normal kidney function
• Athletes and highly active individuals may need 1.2-2.0g protein per kg body weight
• Consult healthcare professionals for specific medical conditions
• Protein needs may vary based on muscle mass, activity level, and health status