A-a Gradient
 
a/A Ratio
 
Absolute Phagocyte Count
 
Adjusted Cerebrospinal Fluid White Blood Cell Count in the Presence of Red Blood Cells
 
Aris birth weight-for-gestational age percentiles, singletons, 22 to 42 weeks gestation
 
Basal metabolic rate (BMR) using Schofield equations in children and adolescents
 
Blood pressure percentiles, 0 to 17 years (2017 standard)
 
Body mass index (BMI) percentiles and Z-scores, females 2 to 20 years (CDC)
 
Body mass index (BMI) percentiles and Z-scores, males 2 to 20 years (CDC)
 
CDC height-for-age percentiles for females, 2 to 20 years
 
CDC height-for-age percentiles for males, 2 to 20 years
 
CDC infant growth percentiles, 0 to 36 months
 
CDC infant head circumference-for-age percentiles, 0 to 36 months
 
CDC infant length-for-age percentiles, 0 to 36 months
 
CDC infant weight-for-age percentiles, 0 to 36 months
 
CDC infant weight-for-length percentiles, 0 to 36 months
 
CDC weight-for-age percentiles for females, 2 to 20 years
 
CDC weight-for-age percentiles for males, 2 to 20 years
 
CDC weight-for-height percentiles for females, 77 to 121 cm
 
CDC weight-for-height percentiles for males, 77 to 121 cm
 
Corrected/Adjusted Age of Preterm Infants
 
Diffusing capacity for carbon monoxide (DLCO) corrected for anemia
 
Diffusing capacity for carbon monoxide (DLCO) correction of predicted value for anemia (SI units)
 
Endotracheal tube size for children (Age 1 to 8 years)
 
Estimated Date of Delivery (EDD) by LMP and Ultrasound
 
Estimated Delivery Date (Patient information)
 
Estimated energy requirement (EER) for females, birth to 18 years (revised 2023)
 
Estimated energy requirement (EER) for males, birth to 18 years (revised 2023)
 
Fenton weight-for-gestational age percentiles, 22 to 50 weeks gestation (2007, not sex-specific)
 
Gestational Age from Estimated Date of Delivery (EDD)
 
Glomerular Filtration Rate Estimation (eGFR) by CKiD U25 Equations with Creatinine and/or Cystatin C in Children and Adults ≤25 Years Old (2021)
 
Glomerular Filtration Rate Estimation (eGFR) by Schwartz Formula
 
Glomerular Filtration Rate Estimation (eGFR) by Updated Schwartz Formula
 
Height Potential: A Child's Target Height Based on Midparental Height
 
Maintenance fluid calculation for children based on daily fluid requirements
 
Maintenance Fluid Calculation for Children Based on Hourly Fluid Requirements
 
MELD/MELDNa scores (2016)(SI units)
 
MELD/MELDNa scores (2016)
 
Model for Endstage Liver Disease (MELD) score in adults (not for liver transplantation listing purposes) (conventional units)
 
Model for Endstage Liver Disease (MELD) score in adults (not for liver transplantation listing purposes) (SI units)
 
Moser Discriminant Function for X-ALD
 
Olsen infant BMI-for-gestational-age percentiles, 24 to 41 weeks gestation
 
Olsen infant head circumference-for-gestational-age percentiles, 23 to 41 weeks gestation
 
Olsen infant length-for-gestational-age percentiles, 23 to 41 weeks gestation
 
Olsen infant weight-for-gestational-age percentiles, 23 to 41 weeks gestation
 
Oxygenation index in neonates, children, and adults
 
Peak expiratory flow prediction in females (5 to <18 years)
 
Peak expiratory flow prediction in males, 5 to <18 years
 
PELD Score for End-Stage Liver Disease in patients less than 12 years old (original)
 
PELD-Cr Score for End-stage Liver Disease in patients less than 12 years old (2023 update)
 
PFT Predicted Values for Pediatric Females MultiCalc
 
PFT Predicted Values for Pediatric Males MultiCalc
 
Pregnancy Gestation by LMP and Ultrasound Biometry
 
QT Interval Correction (EKG, Multi-Equation)
 
Urinary Protein Excretion Estimation
 
WHO assessment of malnutrition in females, 0 to 24 months
 
WHO assessment of malnutrition in females, 2 to 5 years
 
WHO assessment of malnutrition in males, 0 to 24 months
 
WHO assessment of malnutrition in males, 2 to 5 years
 
WHO infant growth percentiles, 0 to 24 months
 
WHO infant head circumference-for-age percentiles, 0 to 24 months
 
WHO infant length-for-age percentiles, 0 to 24 months
 
WHO infant weight-for-age percentiles, 0 to 24 months
 
WHO infant weight-for-length percentiles, 0 to 24 months
 
Z-Score to Percentile Estimation by Cumulative Density Function
 
Z-Score to Percentile Estimation by Inverse Logit Function for Logistic Regression
 

Acetaminophen (Paracetamol) Toxicity Assessment (Revised 2023)
 
Alvarado Score for Acute Appendicitis
 
Apgar Score
 
Bacterial Meningitis Score for Children
 
Centor Strep Pharyngitis Criteria With McIsaac Modification
 
Ehlers-Danlos Syndrome IV (vascular type) Diagnostic Criteria
 
ELBW Infant Prognosis Prediction
 
Jones Criteria for Diagnosis of Rheumatic Fever
 
Kawasaki Disease Diagnostic Criteria
 
Kawasaki Disease Kobayashi Score
 
Mycoplasma Pneumoniae Prediction in Children with Pneumonia
 
Neonatal Early-Onset Sepsis Risk Prediction (2017)
 
Neonatal Early-Onset Sepsis Risk Prediction (2024 update)
 
Newborn hyperbilirubinemia assessment for infants born at 35 weeks or more gestation (2022 update)
 
PEACH Score: Estimating Perioperative Mortality in Adult Congenital Heart Disease Surgery
 
Pediatric Ulcerative Colitis Activity Index (PUCAI)
 
Septic Arthritis Prediction in Pediatric Hip Pain Syndrome
 
Smallpox Risk Assessment (CDC 2025)
 
Westley croup severity score (appropriate for use in children ≤6 years of age)
 

Arterial Blood Gas Interpretation TreeCalc
 
Asthma Hospitalization One Year Risk TreeCalc
 
Mycoplasma Pneumoniae Prediction TreeCalc
 
PECARN Head Trauma Head CT Decision Tree
 
Rabies Post Exposure Prophylaxis (PEP) TreeCalc
 

Flow Unit Conversions
 
Length Unit Conversions
 
Time Unit Conversions
 
Volume Unit Conversions
 
Weight Unit Conversions