Nursing calculators& tools

MED MATH

Dosage & med-math calculator

Four modes in one: oral/parenteral dose, IV flow rate (mL/hr), IV drip rate (gtt/min), and weight-based dosing. Every answer shows the dimensional-analysis setup and states its rounding rule.

IV THERAPY

IV drip rate calculator

A focused gtt/min calculator for gravity tubing — choose the drop factor, enter volume and time, and see the whole-drop result and mL/hr pump rate worked out step by step.

PEDIATRICS

Pediatric safe dose range calculator

The classic 'is this dose safe?' check: enter a mg/kg/day reference range, the child's weight, and doses per day to get the safe daily and per-dose window — with a safe / under / over verdict on the ordered dose.

PEDIATRICS

Pediatric IV maintenance fluid calculator

The 4-2-1 hourly rule and the equivalent 100-50-20 (Holliday-Segar) daily rule from a child's weight, with the full tiered worked setup. Baseline maintenance only.

EMERGENCY

Parkland burn fluid calculator

Burn resuscitation fluids: 4 mL × kg × %TBSA of Lactated Ringer's, split half over the first 8 hours (from the burn) and half over the next 16 — with the hourly rates worked out.

RENAL

Creatinine clearance calculator

Estimate creatinine clearance with the Cockcroft-Gault equation from age, weight, sex, and serum creatinine — a common check before renally-cleared medications, with the full worked setup.

CRITICAL CARE

Mean arterial pressure (MAP) calculator

MAP from systolic and diastolic via (SBP + 2×DBP) ÷ 3, plus pulse pressure and the commonly cited ~65 mmHg perfusion context — worked step by step.

NEURO

Glasgow Coma Scale (GCS) calculator

Score eye, verbal, and motor responses for the GCS total (3–15), the documented E V M breakdown, and the mild / moderate / severe band — with the reasoning behind each component.

ASSESSMENT

Body surface area (BSA) calculator

Calculate body surface area with the Mosteller formula from height and weight in metric or imperial units — the size measure behind BSA-based dosing, shown step by step.

ASSESSMENT

BMI & body-weight calculator

Body mass index from weight and height in metric or imperial units, with the adult CDC/WHO category and the full worked setup shown step by step.

DOSING

Ideal body weight (IBW) calculator

Devine-formula ideal and adjusted body weight from sex and height (metric or imperial) — the reference weight behind several weight-based drug doses and ventilator settings.

MATERNITY

Pregnancy due date calculator

Estimate a due date with Naegele's rule from the last menstrual period, plus gestational age in weeks + days — with the full worked setup.

MATERNITY

APGAR score calculator

Score the newborn on appearance, pulse, grimace, activity, and respiration (each 0–2) for the 0–10 APGAR at 1 and 5 minutes, with the interpretation bands.

LABS

Anion gap calculator

Serum anion gap = Na⁺ − (Cl⁻ + HCO₃⁻) from a basic metabolic panel, with the worked subtraction and a flag for a high-anion-gap metabolic acidosis.

IV THERAPY

Heparin drip rate calculator

Weight-based heparin infusion: units/kg/hr to pump mL/hr from the bag concentration, plus the loading bolus — with the full worked dimensional-analysis setup.