Electrolyte Calculator

Electrolytes are essential for muscle function, hydration, nerve signalling, and heart rhythm. Your needs vary based on how much you sweat, your diet (especially keto or fasting), and your activity level. This calculator estimates your daily sodium, potassium, and magnesium requirements with food source suggestions.

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Medical Disclaimer

This tool provides general estimates for informational purposes only. Individual electrolyte needs vary based on health conditions, medications, and other factors. People with kidney disease, heart conditions, or those taking diuretics or blood pressure medication should consult their doctor before adjusting electrolyte intake. This tool does not constitute medical advice.

Electrolyte Products

Electrolyte powders, salt tablets, magnesium supplements, and electrolyte water bottles.

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Frequently Asked Questions

Why are electrolytes important?
Electrolytes (sodium, potassium, magnesium, calcium) regulate fluid balance, muscle contractions, nerve signalling, and heart rhythm. Imbalances cause cramps, fatigue, headaches, dizziness, and in severe cases, dangerous heart arrhythmias.
How much sodium do athletes need?
Endurance athletes can lose 500-1500mg of sodium per litre of sweat. During intense exercise lasting over 60 minutes, aim for 300-600mg of sodium per hour. Moderate exercisers typically need 2,300-3,000mg per day total.
Do I need extra electrolytes on keto?
Yes. Ketogenic diets cause increased electrolyte excretion through lower insulin levels. Common recommendations for keto: sodium 3,000-5,000mg, potassium 3,500-4,700mg, and magnesium 300-500mg daily. 'Keto flu' is often caused by electrolyte depletion.
What are signs of electrolyte imbalance?
Muscle cramps, twitching, fatigue, headaches, dizziness, nausea, irregular heartbeat, brain fog, and dark urine. If exercising heavily in heat and experiencing these symptoms, replenish electrolytes immediately.

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