How does the Electrolyte Balance work?

Sweat electrolyte content (approximate per litre): Na 920mg · K 200mg · Mg 36mg · Cl 1,400mg Then: Electrolyte loss = Sweat rate (L/hr) × Duration (hr) × Concentration Then: Sodium replacement is most critical for events > 2 hours.

Can you give an example of how to use the Electrolyte Balance?

Example: Input Sweat rate 1.5 L/hr · 3-hour event gives a result of Sodium lost: 4,140mg · Potassium: 900mg (Far exceeds typical sports drink replacement).

Is the Electrolyte Balance free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Electrolyte Balance?

Our Electrolyte Balance uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

Thực tế

Electrolyte Balance

⚡Electrolyte Balance Calculator

Body weight (kg)

Sweat volume (L)

Electrolytes (sodium, potassium, magnesium, chloride) are lost in sweat and must be replaced during prolonged exercise. Sodium loss (~920mg/L) is most critical — replacing water without sodium can cause dangerous hyponatraemia.

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Did You Know?

Hyponatraemia (low blood sodium from drinking too much plain water) has killed several marathon runners. "Drink to thirst" is now the evidence-based guideline — not "drink as much as possible."

References

›Electrolyte — Wikipedia
›Exercise-associated hyponatraemia — BJSM

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Electrolyte Balance

⚡Electrolyte Balance Calculator

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