Nefrologia Kalkulatory

Estimate glomerular filtration rate using the 2021 CKD-EPI creatinine equation. Most accurate GFR estimation for clinical use. Free.

Calculate estimated GFR using the 4-variable MDRD Study equation. Enter creatinine, age, sex, and race. Free nephrology tool.

Calculate creatinine clearance using the Cockcroft-Gault formula. Essential for drug dosing in renal impairment. Free clinical calculator.

Calculate urine protein-to-creatinine ratio (PCR) from spot urine sample. Equivalent to 24-hour proteinuria. Free nephrology tool.

Calculate FENa to differentiate pre-renal from intrinsic renal acute kidney injury. Free emergency nephrology calculator.

Calculate FEUrea for AKI differentiation in patients on diuretics — more reliable than FENa in this context. Free clinical tool.

Calculate TTKG to evaluate renal potassium handling in hypo- and hyperkalaemia. Free nephrology calculator.

Calculate Renal Failure Index to distinguish pre-renal azotaemia from acute tubular necrosis. Free clinical tool.

Calculate haemodialysis adequacy using Kt/V and URR. Assess whether dialysis dose meets KDOQI targets. Free nephrology tool.

Calculate weekly Kt/V for peritoneal dialysis adequacy assessment. Free nephrology clinical calculator.

Calculate serum osmolal gap to detect osmotically active substances (toxic alcohols). Essential toxicology and nephrology tool. Free.

Calculate delta-delta ratio to unmask hidden metabolic disorders when anion gap metabolic acidosis is present. Free.

Calculate urine osmolality and interpret in the context of hyponatraemia and polyuria evaluation. Free nephrology tool.

Assess risk of recurrent nephrolithiasis based on urine chemistry and clinical factors. Free nephrology risk tool.

Calculate effluent dose for continuous renal replacement therapy (CRRT) in critically ill patients. Free ICU nephrology tool.

Estimate GFR using serum cystatin C — more accurate than creatinine in certain populations. Free nephrology calculator.

Assess chronic kidney disease-mineral bone disorder (CKD-MBD) using calcium, phosphate, PTH, and vitamin D. Free tool.

Calculate urine anion gap to differentiate causes of normal anion gap metabolic acidosis. Free clinical nephrology tool.

Calculate serum osmolality from sodium, glucose, and urea. Interpret hypo- and hyperosmolar states. Free clinical tool.

Calculate free water deficit in hypernatraemia and guide fluid replacement therapy. Free nephrology clinical calculator.