65 bedside calculators across 13 categories. Each runs right here in your browser — no sign-up — and the math comes from unit-tested code, never a guess. Browse A–Z →
Classifies a child's blood pressure against AAP 2017 norms (age/sex/height percentile for <13 y; absolute thresholds ≥13 y).
Heart-rate-corrected QT interval by Bazett and Fridericia, from the measured QT and heart rate.
Estimates mean arterial pressure from systolic and diastolic blood pressure.
Age-based endotracheal tube internal diameter (Cole / APLS formula).
Rapid level-of-consciousness assessment: Alert, Voice, Pain, Unresponsive.
Estimates a child's weight from age when it cannot be measured — for emergencies (APLS / Luscombe-Owens formulae).
Estimates the first-24-hour crystalloid resuscitation volume for a burn using the Parkland formula.
Net pressure driving cerebral blood flow — mean arterial pressure minus intracranial pressure.
Serum anion gap with optional albumin correction, delta gap and delta ratio.
Albumin-corrected serum calcium using the Payne correction (SI units).
Daily maintenance fluid requirement using the Holliday-Segar method.
Estimates safe sodium-correction rate and fluid replacement for a child with hyponatremia (Na < 135).
Estimates free-water deficit and fluid replacement for a child with hypernatremia (Na > 145).
Adjusts measured serum sodium for the dilutional effect of hyperglycaemia (e.g. in DKA).
Estimates the free-water deficit in a hypernatraemic child, to guide the volume needed to return sodium to 140 mEq/L.
Estimates the sodium deficit needed to raise serum sodium to a target in a hyponatraemic child.
Calculate Body Mass Index and determine weight category.
Estimate basal metabolic rate and activity-adjusted daily energy needs (Mifflin-St Jeor).
Estimate body surface area using the Mosteller formula.
WHO Growth-Standard z-scores: weight-for-age, length/height-for-age, weight-for-length/height, head circumference.
Estimates a child's genetic target adult height from parental heights, with the expected ±8.5 cm target range.
Discriminates thalassemia trait from iron-deficiency anemia using MCV and RBC count.
Calculates the absolute neutrophil count from the white cell count and the differential, and grades neutropenia.
Estimates circulating blood volume by age band — used for transfusion, exchange and maximum-allowable-blood-loss calculations.
Adjusts the reticulocyte percentage for the degree of anaemia and reticulocyte maturation — gauges marrow response.
Estimates the total iron deficit for parenteral iron replacement using the Ganzoni equation.
Calculates the absolute eosinophil count from the WBC and differential, and grades eosinophilia.
Estimates the likelihood of group A streptococcal pharyngitis to guide testing and antibiotics, with McIsaac age adjustment.
Identifies children with CSF pleocytosis who are at very low risk of bacterial (vs aseptic) meningitis (Nigrovic).
Estimates the likelihood of streptococcal pharyngitis to guide antibiotic decisions (0–5).
Calculates a per-dose amount from a weight and a mg/kg dose, applies a maximum-dose ceiling, and converts to a volume.
Converts an IV fluid volume and infusion time into a drip rate (drops/min) and an hourly rate.
Weight-based endotracheal tube insertion depth at the lips for neonates.
Volume of whole blood to remove (replaced with crystalloid) to correct neonatal polycythemia.
Insertion depth for high-position umbilical artery (UAC) and umbilical vein (UVC) catheters.
Daily glucose load, fluid requirement and feasible dextrose blends for a target glucose infusion rate.
Estimate gestational age from New Ballard neuromuscular + physical maturity totals.
Rapid assessment of newborn condition from five clinical signs (0–10), recorded at 1 and 5 minutes.
Five-sign clinical score (0–10) grading respiratory distress in the newborn.
Five-sign score (0–10) grading the work of breathing / respiratory distress in the newborn; higher is worse.
Clinical scoring of hypoxic-ischaemic encephalopathy severity in term neonates from nine bedside signs (0–22).
Phototherapy, escalation, and exchange-transfusion total-serum-bilirubin thresholds for infants ≥35 weeks (AAP 2022).
Adjusts a preterm infant's chronological age for prematurity — used for growth, development and milestone assessment.
Paediatric estimated GFR using the bedside Schwartz (2009) equation.
Urine anion gap to assess renal NH4+ excretion in normal-anion-gap metabolic acidosis.
Fraction of filtered sodium excreted in urine — helps distinguish prerenal from intrinsic (ATN) acute kidney injury.
Fraction of filtered urea excreted in urine — distinguishes prerenal from intrinsic AKI and stays valid in patients on diuretics.
Estimates the driving force for potassium secretion in the cortical collecting duct — used to work up hyper- and hypokalaemia.
Estimates serum osmolality from sodium, glucose and urea — compare with a measured value to derive the osmolar gap.
Fraction of filtered magnesium excreted in urine — distinguishes renal magnesium wasting from extrarenal loss in hypomagnesaemia.
Oxygenation Index for severity stratification of paediatric ARDS (PARDS).
Severity assessment of an acute paediatric asthma exacerbation from respiratory rate plus four clinical signs (5–15).
Three-item bedside score (0–6) for grading acute asthma severity in children from wheezing, work of breathing, and prolonged expiration.
Grades croup severity from five clinical signs (0–17) to guide treatment and disposition.
Difference between alveolar and arterial oxygen tension — assesses the cause of hypoxaemia (gas-exchange defect vs hypoventilation).
Non-invasive oxygenation severity index (uses SpO₂ instead of PaO₂) for grading pediatric ARDS (PALICC).
Validated acute asthma severity score from five signs (0–12).
Eight-item score (0–10) estimating the likelihood of acute appendicitis in children.
Assessment of consciousness from eye, verbal and motor responses (3–15).
Risk stratification of intermediate-risk paediatric Hodgkin lymphoma from four baseline features, estimating 4-year event-free survival.
Behavioural pain assessment (0–10) for young or non-verbal children: Face, Legs, Activity, Cry, Consolability.
MANTRELS score (0–10) estimating the likelihood of acute appendicitis from symptoms, signs and labs.
Predicts the probability of septic arthritis of the hip versus transient synovitis from four predictors.
Risk-stratifies suspected appendicitis from symptoms, signs and inflammatory markers (0–12).
Doctaverse is clinical decision support for qualified clinicians — it is not a medical device and not for patients or parents.
Every tool is suggestion-only. The calculators are deterministic and unit-tested and the AI never invents a dose, but outputs are not a substitute for your training, examination, local protocols, or primary guidelines. Content is provided “as is”, without warranty; verify every value before acting on it.