Vitals, Labs & Longevity calculators

Kidney, electrolyte and screening calculators.

Kidney filtration rate using CKD-EPI 2021.

Cockcroft-Gault estimate used for drug dosing.

Serum anion gap, corrected for albumin.

Calcium adjusted for low albumin.

Sodium adjusted for high blood glucose.

Helps tell dehydration from kidney problems.

Blood concentration from sodium, glucose and BUN.

Convert °C and °F and see if it counts as a fever.

Exact age in years, months and days, plus next birthday.

Smoking history and lung cancer screening eligibility.

Related guides

Understand eGFR, creatinine and when kidney disease is diagnosed.

Sodium, calcium and anion gap in plain language.

Fever is a symptom, not a disease. Know the red flags.