Health Monitoring & Labs Calculators

23 professional health calculators • 100% free to use

Calculate AST/ALT ratio, cholesterol levels, triglycerides, and creatinine clearance. Interpret hemoglobin, hematocrit, ANC, and glucose lab results online.

All Health Monitoring & Labs Calculators

A1C Calculator — Convert HbA1c to eAG with Targets

Use our A1C calculator to convert HbA1c to estimated average glucose (eAG). See ...

ANC Calculator — Free Neutrophil Count & Neutropenia Grade

Free ANC calculator: enter WBC and differential to get absolute neutrophil count...

AST/ALT Ratio Calculator — Free De Ritis Ratio Tool

Use our free AST/ALT ratio calculator to compute the De Ritis index instantly. V...

Blood Pressure Calculator: Check BP Category by AHA

Use the blood pressure calculator to classify readings by AHA guidelines. See no...

Blood Sugar Calculator — Glucose Ranges & A1C Estimate

Free blood sugar calculator to check fasting and post-meal glucose in mg/dL or m...

Blood Type Calculator: ABO and Rh Inheritance Guide

Use the blood type calculator to explore a child’s possible ABO and Rh types fro...

Child-Pugh Score Calculator — Cirrhosis Class A, B, C

Free child pugh score calculator for cirrhosis severity. Enter bilirubin, albumi...

Cholesterol Calculator — Free LDL, HDL & Lipid Panel

Free cholesterol calculator to review total cholesterol, LDL, HDL, non-HDL, VLDL...

Cholesterol Ratio Calculator — TC:HDL & LDL:HDL Targets

Calculate TC:HDL and LDL:HDL using the cholesterol ratio calculator. View risk c...

Creatinine Clearance Calculator — Cockcroft-Gault CrCl

Free creatinine clearance calculator using the Cockcroft-Gault equation. Enter a...

eGFR Calculator — CKD‑EPI Kidney Function & Staging

Estimate kidney function with the eGFR calculator using the CKD‑EPI 2021 formula...

Fever Calculator — Age-Based Thresholds & Guidance

Use our fever calculator to check temperature by age and site. See normal, low‑g...

Glucose Calculator — Convert mg/dL to mmol/L Instantly

Free glucose calculator to convert mg/dL to mmol/L and mmol/L to mg/dL instantly...

Heart Rate Calculator — Check BPM & Pulse Instantly

Free heart rate calculator to measure your BPM by tap, timer, or manual count. S...

Hematocrit Calculator — Hct %, Hb Conversion & Ranges

Free hematocrit calculator to estimate Hct from hemoglobin or RBC × MCV. Instant...

Hemoglobin Calculator — Convert Hgb Units & Ranges

Free hemoglobin calculator with instant g/dL, g/L, and mmol/L conversion. Check ...

Kidney Function Calculator — CKD Stage & eGFR Tool

Free kidney function calculator using CKD-EPI 2021. Enter creatinine to get eGFR...

Liver Function Calculator — APRI, FIB‑4 & AST/ALT Ratio

Free liver function calculator with APRI score, FIB‑4 index, and AST/ALT ratio. ...

MELD Score Calculator (MELD‑Na) — Risk & Priority Guide

Use our MELD score calculator (MELD‑Na) to estimate 90‑day mortality and transpl...

SpO₂ Levels & Ranges — Oxygen Saturation Calculator

Check SpO₂ with the oxygen saturation calculator. Review typical saturation leve...

Respiratory Rate Calculator – How to Calculate Breaths/Min

Free respiratory rate calculator to count breaths per minute. Tap each breath or...

Temperature Converter Calculator – °C, °F, Kelvin, Rankine

Use our temperature converter calculator to convert °C, °F, Kelvin, and Rankine....

Triglyceride Calculator — Convert mg/dL ↔ mmol/L, TG Ranges

Free triglyceride calculator: convert mg/dL to mmol/L, classify TG ranges, estim...

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Why Use Our Health Monitoring & Labs Calculators?

Our health monitoring and lab result calculator suite features 23 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
  • 100% private — all calculations run locally in your browser
  • No registration, no personal data collected

Frequently Asked Questions

What is the AST/ALT ratio and what does it indicate?

The AST/ALT ratio compares two liver enzymes: aspartate aminotransferase (AST) and alanine aminotransferase (ALT). A ratio above 2:1 often suggests alcoholic liver disease, while a ratio below 1 is more common in non-alcoholic fatty liver disease. Our calculator computes the ratio and provides clinical context for your values.

How do I calculate creatinine clearance with Cockcroft-Gault?

The Cockcroft-Gault formula estimates kidney function: CrCl = ((140 - age) x weight in kg) / (72 x serum creatinine). For females, the result is multiplied by 0.85. Our calculator handles the math and categorizes your result into kidney function stages, which is essential for medication dosing adjustments.

What are normal cholesterol levels?

According to the American Heart Association, desirable total cholesterol is below 200 mg/dL, LDL below 100 mg/dL, HDL above 60 mg/dL, and triglycerides below 150 mg/dL. Our cholesterol calculator breaks down your lipid panel results and flags any values outside optimal ranges.

What does ANC (absolute neutrophil count) mean?

ANC measures the number of neutrophil white blood cells in your blood, indicating your ability to fight infections. A normal ANC is 1,500-8,000 cells/mcL. Below 1,000 is neutropenia, and below 500 is severe neutropenia (high infection risk). Our calculator computes ANC from your CBC results.

What is the Child-Pugh score used for?

The Child-Pugh score classifies chronic liver disease severity into three classes (A, B, C) based on five factors: bilirubin, albumin, INR, ascites, and encephalopathy. It helps predict prognosis and guide treatment decisions, including transplant eligibility. Our calculator scores each factor and provides the overall classification.

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