Dog Salt Toxicity Calculator
Assess the risk when your dog eats salt, salty foods, or drinks salt water — by amount and dog weight.
What Is the Dog Salt Toxicity Calculator?
Assess the risk when your dog eats salt, salty foods, or drinks salt water — by amount and dog weight.
Salt toxicity (hypernatraemia) is a serious and underappreciated risk in dogs. Large amounts of salt from salty snacks, sea water, rock salt, or homemade play dough can cause seizures and brain damage. Use this calculator to assess the risk.
Every result is based on published veterinary research and breed-size-specific growth data — not generic averages. This tool is completely free, works instantly in your browser, and requires no account or sign-up.
How to Use This Calculator
Fill in the required fields above — typically your dog's weight, age, or breed size. Every field has a clear label and hint.
Press the calculate button to get your instant result. No page reload, no account needed, no waiting.
Your result appears immediately below the calculator. It includes the primary answer plus additional context where relevant.
Share, print, or save your result. Always discuss health-related results with your veterinarian before making decisions.
How It Works
Excessive sodium intake causes hypernatraemia — abnormally high sodium levels in the blood. This draws water out of brain cells, causing them to shrink and potentially rupture small blood vessels. Paradoxically, correcting salt poisoning too quickly with water can cause brain cells to swell (cerebral oedema), which is why fluid therapy must be managed by a vet.
The toxic oral dose of sodium for dogs is approximately 4g/kg (4,000mg/kg) of body weight, with significant toxicity beginning around 1.5–2g/kg. Sources: ASPCA Animal Poison Control, Merck Veterinary Manual.
Veterinary Research
Every formula is derived from peer-reviewed veterinary studies and clinical guidelines, not guesswork or generic rules.
Instant Results
No page reload, no waiting, no account needed. Enter your details and your result appears immediately.
100% Private
All calculations happen in your browser. Nothing you enter is ever stored on our servers or shared with anyone.
Always Free
Every calculator on Doggy Calculators is and will always be completely free to use — no premium tier, no catch.
Frequently Asked Questions
Sources & References
This calculator's formulas are based on the following peer-reviewed and authoritative veterinary sources:
- ASPCA Animal Poison Control Center — Primary toxicology reference for toxic substances and risk thresholds
- Merck Veterinary Manual u2014 Toxicology — Detailed toxicology data, LD50 values, and treatment protocols
- Pet Poison Helpline — Clinical toxicology reference and emergency guidance
- Plumb's Veterinary Drug Handbook — Antidote dosing and treatment protocols for toxic ingestion
⚠️ These calculators are reference tools only. Always consult a licensed veterinarian before administering medication or making medical decisions.