Clinical Scores & Lab
68 free clinical scores & lab tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads.
Alveolar-Arterial (A-a) Gradient Calculator
Assess pulmonary gas exchange from ABG and FiO2
Paracetamol Toxicity Nomogram (Rumack-Matthew)
Plot serum paracetamol level vs time to guide NAC treatment
Anaesthetic Gas Flow Rate Calculator
Calculate fresh gas flow and volatile agent consumption for inhalation anaesthesia
Antibiotic PK/PD Target Attainment Calculator
Predict fT>MIC, AUC/MIC, or Cmax/MIC for time- or conc-dependent antibiotics
Antibiotic MIC Breakpoint Interpreter (EUCAST/CLSI)
Classify S, I, or R from an MIC using breakpoint tables
APACHE II Score Calculator
ICU severity of illness and mortality estimation
Bishop Score for Labour Induction
Cervical readiness score to predict induction success
Calcium–Phosphorus Product Calculator
CKD cardiovascular risk from Ca x P product in dialysis patients
Cell Density from OD600 Calculator
Convert absorbance at 600 nm to cells/mL or CFU/mL
Cell Doubling Time Calculator
Calculate population doubling time from two cell counts
Cell Viability Calculator (Trypan Blue Exclusion)
Calculate live cell count and viability % from haemocytometer data
CHA₂DS₂-VASc Score Calculator
Stroke risk in atrial fibrillation for anticoagulation decisions
CHADS₂ Stroke Risk Score
Original stroke risk tool for AF patients
Child-Pugh Score Calculator
Cirrhosis severity classification A, B, or C
Codon to Amino Acid Translator
Translate a DNA or RNA codon sequence into its amino acid sequence
CURB-65 Pneumonia Severity Score
Stratify community-acquired pneumonia for admit vs discharge
Morse Fall Risk Scale Calculator
Six-item inpatient fall risk assessment tool
GC Content Calculator
Calculate GC percentage and base composition for any nucleotide sequence
Glasgow Coma Scale (GCS) Calculator
Score eye, verbal, and motor responses for consciousness level
GRACE ACS Outcome Score
In-hospital and 6-month mortality risk in ACS
IGF-1 Standard Deviation Score Calculator
Compute IGF-1 SDS from age- and sex-specific reference ranges
HEART Score for Chest Pain
Identify low-risk chest pain for safe ED discharge
Haematologic Response Criteria Calculator (CR/VGPR/PR)
Classify myeloma treatment response by IMWG criteria
INR Reversal — FFP or PCC Dose Calculator
Calculate FFP units or PCC dose to reverse an elevated INR
Insulin Sliding Scale & Drip Rate Calculator
Build a correction scale and convert insulin units/hr to a pump rate
Ionised Calcium Estimator from Total Calcium and pH
Estimate ionised Ca when direct measurement is unavailable
IV Solution Tonicity & Compatibility Estimator
Check tonicity of compounded IV admixtures before infusion
Kleihauer-Betke Feto-Maternal Haemorrhage Estimator
Estimate feto-maternal bleed volume and anti-D dose
Lactate Clearance Calculator
Percentage lactate clearance as a sepsis resuscitation endpoint
Maximum Allowable Blood Loss (MABL) Calculator
Perioperative transfusion trigger from blood volume and target Hb
10× Medication Error Detection — Dose Plausibility Checker
Flag 10-fold dosing errors by checking calculated dose against safe range
MELD & MELD-Na Score Calculator
Liver disease severity and transplant waitlist priority score
Winter's Formula — Expected pCO2 in Metabolic Acidosis
Detect superimposed respiratory disorders in metabolic acidosis
Neonatal Drug Dose Reference Calculator
Weight-based neonatal dosing for antibiotics, caffeine, and NICU drugs
NEWS2 Score Calculator
National Early Warning Score 2 for patient deterioration detection
Arterial Oxygen Content (CaO2) Calculator
Calculate total oxygen content from haemoglobin and SpO2/PaO2
Oxygen Delivery (DO₂) & Consumption (VO₂) Calculator
Haemodynamic oxygen transport indices from cardiac output and Hb.
Paediatric Emergency Drug Dose Reference
One-weight-entry lookup for all peds ACLS and RSI drugs.
Paediatric GCS Calculator (Children <2 years)
Age-adapted Glasgow Coma Scale for infants and toddlers
Parkland Burn Formula — IV Fluid Resuscitation
Calculate 24-hour fluid resuscitation volume for burn injuries
Modified Brooke Formula — Burn Fluid Resuscitation
Alternative lower-volume 24-hour IV fluid calculation for burn injuries
PCR Master Mix Calculator
Scale reagent volumes for any number of PCR reactions
Neonatal PDA Treatment Candidacy Estimator
Score clinical and echo features for PDA intervention decisions
Paediatric Early Warning Score (PEWS)
Standardised early deterioration detection in children
Phenytoin Dose Adjustment for Hypoalbuminaemia
Correct a phenytoin level for low albumin or renal failure.
Plasmid Insert Size Estimator
Predict gel band sizes from a restriction digest of a recombinant plasmid
Platelet Transfusion Dose Calculator
Calculate platelet concentrate units needed to reach a target count
PFA-100 Closure Time Result Interpreter
Classify platelet function from PFA-100 collagen-epinephrine and ADP closure times
Pneumonia Severity Index (PSI/PORT) Calculator
Detailed 20-variable pneumonia mortality risk stratifier
QuantiFERON-TB Gold Interpretation Calculator
Apply QIAGEN cutoffs to classify a QFT IGRA result
qPCR Efficiency Calculator from Standard Curve
Calculate PCR efficiency and R-squared from a Ct vs log(template) curve
qSOFA Score Calculator
Quick bedside sepsis screening in three parameters
RBC Transfusion Expected Hb Rise Calculator
Predict post-transfusion haemoglobin from units transfused
Reticulocyte Production Index (RPI) Calculator
Determine if anaemia is hypoproliferative or hyperproliferative
Revised Trauma Score (RTS) Calculator
Physiologic trauma severity for triage and survival prediction
Shock Index Calculator
HR/SBP ratio for early haemodynamic instability detection
Hyponatraemia Correction Rate Calculator
Safe sodium correction speed to avoid osmotic demyelination.
SOFA Score Calculator (Sequential Organ Failure Assessment)
Multi-organ failure scoring for ICU mortality estimation
Sputum Gram Stain Quality Checker (Murray-Washington Criteria)
Decide whether a sputum sample is acceptable for culture
TIMI Risk Score for UA/NSTEMI
Seven-item risk predictor for MACE in unstable angina
Bacterial Transformation Efficiency Calculator
Calculate CFU/ug DNA from colony count and plating volume
Transtubular Potassium Gradient (TTKG) Calculator
Assess renal potassium handling in hypo- and hyperkalaemia
High-Sensitivity Troponin Serial Rise Calculator
Detect significant troponin rise for 0h/1h/3h ACS rule-in/rule-out
Tumour Lysis Syndrome Risk Calculator (Cairo-Bishop)
Classify TLS risk before starting chemotherapy
Urinalysis Result Interpreter
Translate dipstick and microscopy findings into clinical differentials
Wells DVT Score with D-Dimer Interpretation
Combine the Wells score with D-dimer to drive the DVT pathway
Wells Score for DVT
Pre-test probability for deep vein thrombosis
Wells Score for Pulmonary Embolism
Clinical pre-test probability for PE to guide CTPA decisions