Calculators to help you understand lab results
49 tools matched to this goal.
Body Surface Area Calculator
BSA by Mosteller, DuBois and Haycock formulas.
Adjusted Body Weight Calculator
A dosing and nutrition weight for people who are well above ideal weight.
Estimated Height from Knee Height
Estimate stature from knee height (Chumlea), useful when standing height is not possible.
Arm Muscle Area Calculator
Estimate muscle area in the upper arm from circumference and triceps skinfold.
Skeletal Muscle Index Calculator
Appendicular muscle mass scaled to height squared.
Hume Lean Body Mass Calculator
Lean mass estimate using the Hume equations for drug dosing and nutrition.
Daily Vitamin D Needs Calculator
Recommended vitamin D intake by age, with the adult upper limit.
Mean Arterial Pressure Calculator
Average pressure that perfuses your organs.
Corrected QT (QTc) Calculator
Correct the ECG QT interval for heart rate.
Orthostatic Hypotension Check
Measure the blood pressure drop when you stand up.
hs-CRP Heart Risk Calculator
Classify high-sensitivity C-reactive protein as a cardiovascular risk marker.
Lipoprotein(a) Unit Converter
Convert Lp(a) between nmol/L and mg/dL.
Cholesterol Unit Converter
Convert total cholesterol between mg/dL and mmol/L.
Fasting Glucose Category Calculator
Classify a fasting blood glucose result using ADA thresholds.
Two-Hour Glucose Tolerance Category
Classify a 2-hour oral glucose tolerance test result.
HOMA-B Beta-Cell Function Calculator
Estimate pancreatic beta-cell function from fasting glucose and insulin.
Urine Albumin-to-Creatinine Ratio Calculator
Classify kidney damage risk from urine albumin and creatinine.
A1C Unit Converter (% and mmol/mol)
Convert HbA1c between percentage and IFCC mmol/mol units.
Glucose Meter Accuracy Check
Compare a meter reading against a lab value using the ISO 15197 accuracy limits.
Osteoporosis Self-Assessment (OST)
Simple bone density screening score for women.
Cervical Screening Interval Calculator
Typical cervical screening interval by age (US guidance).
Mammogram Screening Schedule Calculator
Typical breast screening frequency by age.
Pediatric Maintenance Fluids Calculator
Daily fluid needs by weight (Holliday-Segar).
Child Vitamin D Needs Calculator
Recommended daily vitamin D for infants and children.
eGFR Kidney Function Calculator
Kidney filtration rate using CKD-EPI 2021.
Creatinine Clearance Calculator
Cockcroft-Gault estimate used for drug dosing.
Anion Gap Calculator
Serum anion gap, corrected for albumin.
Corrected Calcium Calculator
Calcium adjusted for low albumin.
Corrected Sodium Calculator
Sodium adjusted for high blood glucose.
BUN-to-Creatinine Ratio Calculator
Helps tell dehydration from kidney problems.
Serum Osmolality Calculator
Blood concentration from sodium, glucose and BUN.
Body Temperature & Fever Checker
Convert °C and °F and see if it counts as a fever.
Age Calculator
Exact age in years, months and days, plus next birthday.
Pack-Years Calculator
Smoking history and lung cancer screening eligibility.
Free Water Deficit Calculator
Estimate the water deficit in high sodium (hypernatraemia) using body water fraction.
Fractional Excretion of Sodium (FENa) Calculator
Estimate how the kidneys handle sodium from urine and serum values.
Osmolal Gap Calculator
Difference between measured and calculated serum osmolality.
Delta Ratio (Delta-Delta) Calculator
Compare the anion gap rise with the bicarbonate fall in metabolic acidosis.
Winter’s Formula Calculator
Expected CO₂ compensation for metabolic acidosis.
MELD Score Calculator
Liver disease severity score from bilirubin, INR and creatinine (original MELD).
MCV and MCH Calculator
Red cell size and haemoglobin content from a full blood count.
Corrected Reticulocyte Count Calculator
Adjust the reticulocyte percentage for the degree of anaemia.
Transferrin Saturation Calculator
Iron saturation of transferrin from serum iron and TIBC.
Albumin-to-Globulin Ratio Calculator
Ratio of albumin to globulin from total protein and albumin.
Albumin-Corrected Anion Gap Calculator
Anion gap adjusted for low albumin.
De Ritis Ratio (AST/ALT) Calculator
Compare AST and ALT liver enzymes.
Neutrophil-to-Lymphocyte Ratio (NLR) Calculator
Ratio of neutrophils to lymphocytes from a blood count.
Creatinine Unit Converter
Convert serum creatinine between µmol/L and mg/dL.
Haemoglobin to Hematocrit Estimate
Estimate hematocrit from haemoglobin using the rule of three.
Other goals
- Lose weight
- Build muscle
- Eat better
- Get fitter
- Protect my heart
- Manage blood sugar
- Pregnancy & fertility
- Care for my child
- Sleep better
- Mental wellbeing
- Cut back on drink, smoke & caffeine
- Understand my lab results
Related guides
Mean Arterial Pressure: Why Clinicians Use It
MAP shows whether organs get enough blood flow.
Heart HealthThe QT Interval and Medication Safety
Why some medicines affect your heart rhythm and how QTc is measured.
Pregnancy & FamilyBone Health for Women
Build and protect bone at every stage of life.