Daily Potassium Needs Calculator
Calculate your recommended daily potassium intake based on age, gender, activity level, and health conditions.
Potassium is an essential electrolyte that plays a critical role in muscle contraction, nerve signaling, fluid balance, and heart rhythm regulation. Inadequate potassium intake is linked to high blood pressure, kidney stones, and increased cardiovascular risk.
Recommended Daily Intake (AI — Adequate Intake):
| Age Group | Male | Female | Pregnant | Lactating |
|---|---|---|---|---|
| 1–3 years | 2,000 mg | 2,000 mg | — | — |
| 4–8 years | 2,300 mg | 2,300 mg | — | — |
| 9–13 years | 2,500 mg | 2,300 mg | — | — |
| 14–18 years | 3,000 mg | 2,300 mg | 2,600 mg | 2,500 mg |
| 19–50 years | 3,400 mg | 2,600 mg | 2,900 mg | 2,800 mg |
| 51+ years | 3,400 mg | 2,600 mg | — | — |
Activity Level Adjustments: Active individuals lose potassium through sweat. Athletes and those exercising heavily may need 10–20% more than baseline recommendations. Endurance athletes in hot climates should pay particular attention to potassium replacement.
Health Condition Adjustments: People with high blood pressure often benefit from higher potassium intake (up to 4,700 mg/day according to the DASH diet). However, individuals with kidney disease must often restrict potassium, as impaired kidneys cannot excrete excess amounts efficiently.
Top Potassium-Rich Foods:
- Banana: ~422 mg per medium banana
- Sweet potato: ~541 mg per medium potato
- Spinach (cooked): ~839 mg per cup
- Avocado: ~708 mg per whole avocado
- White beans: ~1,004 mg per cup (cooked)
Practical Tips: Most adults do not consume enough potassium. Aim to include potassium-rich fruits, vegetables, legumes, and dairy products in every meal. Cooking methods matter — boiling can leach potassium into water, while baking or steaming preserves more of this vital mineral. If you take diuretics or blood pressure medication, consult your doctor about your specific potassium needs.