Sodium-to-Potassium Ratio Calculator
Dietary sodium/potassium balance.
Enter your values
Enter the daily sodium intake in mg.
Enter the daily potassium intake in mg.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Na:K ratio
- 1.15
- Assessment
- Moderate
- Potassium needed for ratio of 1
- 3,000 mg
Quick answer
A lower sodium-to-potassium ratio (closer to or below 1) is generally associated with better cardiovascular outcomes.
ratio = sodium intake (mg) / potassium intake (mg)
At a glance
| What it does | Dietary sodium/potassium balance. |
|---|---|
| Category | Health |
| Inputs needed | Daily sodium intake, Daily potassium intake |
| Main output | Na:K ratio |
| Formula | ratio = sodium intake (mg) / potassium intake (mg) |
| Cost | Free — no sign-up, no download |
How to use the Sodium-to-Potassium Ratio Calculator
- 1Enter your estimated daily sodium and potassium intake from a food diary or tracking app.
- 2Public health guidance generally favours reducing sodium and increasing potassium-rich foods like fruits and vegetables.
- 3This is general dietary guidance, not medical advice — people with kidney disease should consult a doctor before increasing potassium intake.
Inputs explained
- Daily sodium intake(mg)
- Enter the daily sodium intake in mg.
- Daily potassium intake(mg)
- Enter the daily potassium intake in mg.
Worked example
Using the values the calculator loads with:
Inputs
- Daily sodium intake3000 mg
- Daily potassium intake2600 mg
Results
- Na:K ratio1.15
- AssessmentModerate
- Potassium needed for ratio of 13,000 mg
Frequently asked questions
Why does the ratio matter more than sodium alone?
Potassium helps counteract sodium's effect on blood pressure, so the balance between them matters.
Is potassium supplementation safe?
Not for everyone — excess potassium can be dangerous for people with impaired kidney function.
What do I need to enter into the Sodium-to-Potassium Ratio Calculator?
Just 2 values: daily sodium intake, daily potassium intake. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Sodium-to-Potassium Ratio Calculator work out the answer?
A lower sodium-to-potassium ratio (closer to or below 1) is generally associated with better cardiovascular outcomes. It applies the formula ratio = sodium intake (mg) / potassium intake (mg) and shows the working so you can check each step by hand.
Is the Sodium-to-Potassium Ratio Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.