Most Popular Health Monitoring & Labs Calculators
Glucose Calculator
Free glucose calculator to convert mg/dL to mmol/L and mmol/L to mg/dL instantly. See fasting, post-meal, and OGTT ranges with clinical interpretation.
Cholesterol Calculator
Free cholesterol calculator to review total cholesterol, LDL, HDL, non-HDL, VLDL, and triglyceride ratios from your lipid panel. Supports mg/dL and mmol/L.
Child-Pugh Score Calculator
Free child pugh score calculator for cirrhosis severity. Enter bilirubin, albumin, INR, ascites, and encephalopathy to get Class A, B, or C with survival data.
Hemoglobin Calculator
Free hemoglobin calculator with instant g/dL, g/L, and mmol/L conversion. Check Hgb levels by age and sex, WHO anemia thresholds, and hematocrit estimate.
Blood Sugar Calculator
Free blood sugar calculator to check fasting and post-meal glucose in mg/dL or mmol/L. See normal, prediabetes, and diabetes ranges with estimated A1C.
Triglyceride Calculator
Free triglyceride calculator: convert mg/dL to mmol/L, classify TG ranges, estimate VLDL, LDL (Friedewald), non‑HDL, and TG/HDL ratio from your lipid panel.
All Health Monitoring & Labs Calculators
Showing 45 of 45 calculators
A1C Calculator
Use our A1C calculator to convert HbA1c to estimated average glucose (eAG). See normal, prediabetes, and diabetes thresholds in mg/dL and mmol/L. Fast results.
Albumin Calculator
Free albumin calculator to interpret serum albumin levels, grade hypoalbuminemia, and compute A/G ratio plus albumin-corrected calcium from your lab results.
Albumin-Corrected Anion Gap Calculator
Use our albumin-corrected anion gap calculator to raise the anion gap by 2.5 per 1 g/dL of low albumin and reveal a hidden high-gap metabolic acidosis.
ANC Calculator
Free ANC calculator to calculate absolute neutrophil count from WBC and differential. Get ANC in cells/uL and x10^9/L with instant neutropenia grading.
Anion Gap Calculator
Free anion gap calculator finds serum anion gap from sodium, chloride, and bicarbonate, with albumin correction and delta ratio for metabolic acidosis.
AST/ALT Ratio Calculator
Use our free AST/ALT ratio calculator to compute the De Ritis index instantly. Visual ratio chart, enzyme-level assessment, and clinical patterns guide.
Blood Pressure by Age Calculator
Free blood pressure by age calculator: see your percentile among adults your age and sex, plus a normal range chart of average readings from age 18 to 85.
Blood Pressure Calculator
Use the blood pressure calculator to classify readings by AHA guidelines. See normal, elevated, and hypertension stages with explanations and practical tips.
Blood Sugar Calculator
Free blood sugar calculator to check fasting and post-meal glucose in mg/dL or mmol/L. See normal, prediabetes, and diabetes ranges with estimated A1C.
Blood Type Calculator
Use the blood type calculator to explore a child’s possible ABO and Rh types from two parents. View outcomes and percentages, plus advanced genotype settings.
BUN/Creatinine Ratio Calculator
Free BUN creatinine ratio calculator to evaluate kidney function from two lab values and tell pre-renal causes like dehydration from intrinsic kidney damage.
Child-Pugh Score Calculator
Free child pugh score calculator for cirrhosis severity. Enter bilirubin, albumin, INR, ascites, and encephalopathy to get Class A, B, or C with survival data.
Cholesterol Calculator
Free cholesterol calculator to review total cholesterol, LDL, HDL, non-HDL, VLDL, and triglyceride ratios from your lipid panel. Supports mg/dL and mmol/L.
Cholesterol Ratio Calculator
Calculate TC:HDL and LDL:HDL using the cholesterol ratio calculator. View risk context, targets, and lipid thresholds with simple notes for interpretation.
CKD Calculator
Use our CKD calculator to stage chronic kidney disease from your eGFR and urine albumin (ACR) into KDIGO G1-G5 and A1-A3 risk categories for monitoring.
Creatinine Clearance Calculator (CrCl)
Free creatinine clearance calculator (CrCl) for renal drug dosing. Enter age, sex, weight, and serum creatinine to estimate clearance in mL/min instantly.
eGFR Calculator
Estimate kidney function with the eGFR calculator using the CKD‑EPI 2021 formula. Enter age, sex, and creatinine (mg/dL or µmol/L) to get eGFR and CKD stage.
FENa Calculator
Free FENa calculator to find the fractional excretion of sodium from urine and serum sodium and creatinine — separate prerenal AKI from ATN, with FEUrea mode.
Fever Calculator
Use our fever calculator to check temperature by age and site. See normal, low‑grade, or high fever, convert °C/°F, and get clear next‑step guidance now.
FIB-4 Calculator
Free FIB-4 calculator scores liver fibrosis risk from age, AST, ALT, and platelet count, with age-adjusted FIB4 cutoffs and a bonus APRI score included.
Glucose Calculator
Free glucose calculator to convert mg/dL to mmol/L and mmol/L to mg/dL instantly. See fasting, post-meal, and OGTT ranges with clinical interpretation.
Heart Rate Calculator
Free heart rate calculator to measure your BPM by tap, timer, or manual count. See resting pulse ranges, training zones, and age-based guidance instantly.
Hematocrit Calculator
Free hematocrit calculator to estimate Hct from hemoglobin or RBC × MCV. Instant Hct-to-Hgb conversion, normal ranges by age and sex, and visual gauge.
Hemoglobin Calculator
Free hemoglobin calculator with instant g/dL, g/L, and mmol/L conversion. Check Hgb levels by age and sex, WHO anemia thresholds, and hematocrit estimate.
Iron Deficit Calculator
Free iron deficit calculator using the Ganzoni equation to work out total iron deficit in mg from body weight, current hemoglobin and your target hemoglobin.
Kidney Function Calculator
Free kidney function calculator using CKD-EPI 2021. Enter creatinine to get eGFR, CKD stage (G1-G5), ACR category, and KDIGO risk — no race coefficient.
LDL Cholesterol Calculator
Free LDL cholesterol calculator using the Friedewald and Sampson/NIH formulas. Estimate LDL from total cholesterol, HDL and triglycerides, plus non-HDL.
Liver Function Calculator
Free liver function calculator with APRI score, FIB‑4 index, and AST/ALT ratio. Enter your liver enzymes, platelets, and age for instant fibrosis screening.
Mean Arterial Pressure Calculator (MAP)
Free mean arterial pressure calculator to find MAP from systolic and diastolic blood pressure. Check whether organ perfusion is adequate using the MAP formula.
MELD Score Calculator (MELD‑Na)
Use our MELD score calculator (MELD‑Na) to estimate 90‑day mortality and transplant priority from bilirubin, INR, creatinine, and sodium. Mobile‑friendly.
Mentzer Index Calculator
Use our Mentzer index calculator to divide MCV by red cell count and tell iron deficiency anemia apart from beta thalassemia trait using a routine CBC result.
Neutrophil-to-Lymphocyte Ratio Calculator (NLR)
Use our neutrophil-to-lymphocyte ratio calculator (NLR) to divide absolute neutrophils by lymphocytes as an inflammation and prognosis marker from a CBC.
Non-HDL Cholesterol Calculator
Free non HDL cholesterol calculator: subtract HDL from total cholesterol, see your risk-based target, and spot the remnant cholesterol an LDL reading hides.
SpO₂ Levels & Ranges
Check SpO₂ with the oxygen saturation calculator. Review typical saturation levels, understand when values may be low, and track readings over time. Easily.
Platelet Count Calculator
Free platelet count calculator to interpret your CBC result, grade thrombocytopenia or thrombocytosis severity, bleeding risk, and corrected count increment.
Potassium Level Calculator
Use this potassium level calculator to compare blood results with your lab range, convert mmol/L and mEq/L, and understand low or high potassium thresholds.
QTc Calculator
Free QTc calculator to correct the QT interval using Bazett, Fridericia, Framingham, and Hodges formulas. Enter QT and heart rate to flag prolongation.
Respiratory Rate Calculator
Free respiratory rate calculator to count breaths per minute. Tap each breath or enter a 15, 30, or 60 second count to calculate your breathing rate by age.
Resting Heart Rate Calculator
Free resting heart rate calculator comparing your pulse to normal ranges by age and sex, with athlete percentiles and what a high or low reading actually means.
Serum Osmolality Calculator
Use our serum osmolality calculator to compute calculated osmolality from sodium, glucose, and BUN, then find the osmolal gap for toxic alcohol screening.
Corrected Sodium Calculator
Free corrected sodium calculator for hyperglycemia. Get corrected sodium using Katz and Hillier factors, plus hyponatremia deficit and safe correction rate.
Temperature Converter Calculator
Use our temperature converter calculator to convert °C, °F, Kelvin, and Rankine. Enter one value to see all units update, copy results, and set rounding.
Triglyceride Calculator
Free triglyceride calculator: convert mg/dL to mmol/L, classify TG ranges, estimate VLDL, LDL (Friedewald), non‑HDL, and TG/HDL ratio from your lipid panel.
Troponin Calculator
Free troponin calculator comparing your result to the sex-specific 99th percentile cutoff, plus delta troponin to separate an acute rise from a chronic one.
TSH Levels Calculator
Free TSH levels calculator classifying your thyroid result as normal, subclinical or overt hypothyroid and hyperthyroid, with age and pregnancy adjusted ranges.
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Why Use Our Health Monitoring & Labs Calculators?
Our health monitoring and lab result calculator suite features 45 clinical tools for interpreting AST/ALT ratios, cholesterol levels, triglyceride ranges, creatinine clearance (Cockcroft-Gault), hemoglobin and hematocrit values, absolute neutrophil count (ANC), blood glucose levels, and liver function scores including Child-Pugh and MELD. Each calculator displays reference ranges and clinical interpretations to help you understand your lab work.
Who Are These Calculators For?
Patients reviewing their blood test results, medical students learning clinical interpretation, nurses and physicians needing quick reference calculations, and health-conscious individuals monitoring routine lab work. Our AST/ALT ratio and creatinine clearance calculators are among the most frequently used tools on the site.
How Our Calculators Work
Enter your lab values exactly as they appear on your report, and the calculator applies standard clinical formulas and reference ranges to interpret the results. For example, the creatinine clearance calculator uses the Cockcroft-Gault equation, while the ANC calculator multiplies your white blood cell count by the percentage of neutrophils and bands.
Key Benefits
- Medical-grade accuracy based on WHO and CDC guidelines
- Instant results with detailed explanations and recommendations
- Calculations run in your browser; some tools offer local saving
- No registration, no personal data collected
Frequently Asked Questions
What is the AST/ALT ratio and what does it indicate?
How do I calculate creatinine clearance with Cockcroft-Gault?
What are normal cholesterol levels?
What does ANC (absolute neutrophil count) mean?
What is the Child-Pugh score used for?
Explore More Health Calculators
Discover our complete collection of 371 health calculators across 9 categories