Interactive sodium tool
Sodium Percentage & Reference Calculator
Convert sodium milligrams to a percentage of an FDA, WHO or custom reference, or convert a percentage back into milligrams.
How to interpret the result
The result is an estimate based on the values you enter. Reference comparisons provide context, not a personal sodium prescription.
Medical information limits
If you have a medical condition or an individualized sodium restriction, follow guidance from your qualified healthcare professional. Read the medical disclaimer.
How this tool works
The Sodium Percentage & Reference Calculator converts a sodium amount into a percentage of an FDA, WHO or visitor-entered reference, or converts a percentage back into milligrams.
Inputs
- Conversion direction
- Sodium amount or percentage
- Reference value
Method
Milligrams to percentage: sodium mg ÷ reference mg × 100. Percentage to milligrams: percentage ÷ 100 × reference mg.
Assumptions
A custom reference is supplied by the visitor for comparison. Avoid Salt does not choose or validate a personal medical limit.
Limitations
Different organizations publish different population-level reference values. Individual clinical guidance may use a different number.
Sources
- U.S. Food and Drug Administration Verified 2026-08-10
- World Health Organization Verified 2026-08-10
