Electrolytes Fluids calculators
22 calculators Anion Gap Calculator Calculate the serum anion gap from sodium, chloride and bicarbonate, with optional potassium, albumin correction, and a delta ratio to flag mixed acid-base disorders.
Open Corrected Calcium Calculator Albumin-corrected serum calcium with the Payne formula, plus an estimated ionized calcium, US/SI units, status banding and an adjustable correction factor and target albumin.
Open IV Drip Rate Calculator Calculate IV drip rate in drops per minute, plus mL/hr flow rate and drops per hour. Reverse-solve for infusion time or volume, with worked steps and a cost estimate.
Open Parkland Formula Calculator Parkland burn fluid calculator with Rule of Nines TBSA estimator, kg or lb weight, elapsed-time adjustment, urine output target and IV drip rate in mL/hr and drops/min.
Open Sodium Correction Calculator Correct serum sodium for hyperglycemia with the Katz (1.6) or Hillier (2.4) factor. Switch glucose units, compare both formulas, and see effective serum osmolality.
Open Sodium Deficit Calculator Estimate the sodium deficit in mEq for hyponatremia from total body water, current and target sodium, plus a safe correction time and optional replacement-fluid volume.
Open Water Intake Calculator Find how much water to drink daily by weight, age, sex, exercise, climate and pregnancy. See total fluid, water from drinks vs food, cups, ounces and bottle count.
Open Acid-Base Calculator Calculate buffer pH with the Henderson-Hasselbalch equation or interpret arterial blood gas (ABG) values for respiratory and metabolic acid-base disorders.
Open Arterial Blood pH Calculator Calculate arterial blood pH from bicarbonate and PaCO2 using the Henderson-Hasselbalch equation. Includes acid-base disorder classification, compensation phase, and anion gap.
Open Bicarbonate Deficit Calculator Calculate the bicarbonate deficit (mEq) needed to correct metabolic acidosis using the Ewald, standard, or Kurtz method. Enter weight, sex, and serum HCO3.
Open Corrected Magnesium Calculator Albumin-corrected serum magnesium using the Kroll-Elin formula. Enter measured Mg and albumin in mg/dL, mmol/L, or mEq/L for an instant corrected result.
Open Drops Per Minute Calculator Calculate IV drip rate in drops per minute from volume, time and drop factor. Includes reverse-solve, mL/hr flow rate, 15-second bedside count, and a worked example.
Open Free Water Deficit Calculator Calculate the free water deficit in hypernatremia using weight, sex, age, and serum sodium. Get infusion rates for 24 h, 48 h, and 72 h correction windows.
Open IV Flow Rate Calculator Calculate IV drip rate in gtt/min and flow rate in mL/hr from volume, time, and drop factor. Covers macrodrip and microdrip tubing. Free nursing tool.
Open Plasma Osmolality Calculator Calculate plasma osmolality using the Smithline-Gardner formula. Get osmolal gap, ethanol correction, and interpretation of normal vs. abnormal results.
Open Serum Osmolality Calculator Calculate serum osmolality from sodium, BUN, and glucose. Includes osmolar gap when a measured value is entered, with clinical interpretation and normal ranges.
Open Sodium Change Calculator in Hypertriglyceridemia Correct a falsely low serum sodium caused by high triglycerides (pseudohyponatremia). Enter measured Na and TG levels to find the true corrected sodium.
Open Sodium Correction Rate Calculator: Hyponatremia and Hypernatremia Calculate IV fluid infusion rate and serum sodium change using the Adrogue-Madias formula. Covers hyponatremia and hypernatremia with safety limits and step-by-step math.
Open Total Body Water Calculator Calculate total body water in litres and as a percentage of body weight using the Watson or Hume-Weyers formula. Includes ICF and ECF compartment breakdown.
Open Urine Anion Gap Calculator Calculate the urine anion gap (UAG) from sodium, potassium, and chloride. Instant interpretation: renal vs. extrarenal cause of non-gap metabolic acidosis.
Open Venous Blood pH Calculator Calculate venous blood pH using the Henderson-Hasselbalch equation from HCO3 and PvCO2. Instantly classify acid-base disorders and estimate equivalent arterial values.
Open Winter's Formula Calculator Calculate expected PaCO2 using Winter's formula. Enter serum bicarbonate to get the compensation range and identify mixed acid-base disorders instantly.
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