Free Medical, Laboratory & Hospital Tools
Doxcels offers free clinical and laboratory calculators, health calculators, medical unit converters and hospital-management tools. Every calculator runs in your browser, names the published formula it uses, and explains its limitations — so results can be checked, understood and discussed with a healthcare professional.
Browse tools by category
Health Calculators
Everyday health calculators for body measurements, energy needs and fitness.
e.g. BMI, BMR, body fat, calorie calculators
Pregnancy Tools
Pregnancy and fertility date calculators.
e.g. Due date, pregnancy week, ovulation, conception calculators
Medical Converters
Convert laboratory and clinical units quickly and accurately.
e.g. mg/dL to mmol/L, temperature, laboratory unit converters
Hospital Tools
Operational calculators for hospital and clinic management.
e.g. Bed occupancy, average length of stay, staffing and HMS ROI calculators
All available calculators
Accurate, transparent and private by design
Each tool is built around a recognised clinical formula — such as the race-free CKD-EPI 2021 equation for eGFR, Cockcroft-Gault for creatinine clearance, or the ADAG equation for A1C — and cites its source. Inputs accept common laboratory units and are converted internally before the formula is applied, and every result page shows the formula, a worked example and the calculation steps.
Calculations happen entirely on your device. The values you enter are never stored, sent to our servers, or shared with analytics.
Built by a healthcare software team
These tools are provided by Doxcels, the team behind our hospital management software and laboratory information system. New calculators for health, pregnancy, unit conversion and hospital operations are added regularly.