Free Online Calculators

From BMI to loans, tips to age — instant calculations at your fingertips.

369 Calculators 16 Categories 100% Free

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GPA Calculator

#1

Calculate Grade Point Average (GPA) based on two courses.

Education & Learning 4 variants

Simple Interest Calculator

Calculate simple interest on principal amount

Financial Calculators 5 variants

Heart Rate Zone Calculator

Calculate maximum heart rate and training zones

Health & Fitness 5 variants

Velocity Calculator

Calculate velocity, distance, or time using v=d/t. Perfect for physics, motion, and kinematics problems.

Science & Engineering 6 variants

Creatine Dosage Calculator

Estimates the recommended daily creatine intake based on body weight and desired dosage per kilogram.

Health & Fitness 4 variants

Hotel Occupancy Rate Calculator

Calculates the percentage of occupied rooms over a given period.

Business & Retail 4 variants
All Tools Calculators Converters Generators Makers Checkers

All Calculators

369 total
Sharpe Ratio Calculator Calculates the Sharpe Ratio to measure risk-adjusted investment return.
Financial Calculators
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Return on Equity (ROE) Calculator Calculate how efficiently a company generates profit from shareholders' equity.
Financial Calculators
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Corrected Calcium Calculator Estimates adjusted serum calcium based on albumin levels using the standard clin...
Health & Fitness
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BMI Prime Calculator Calculates BMI Prime by comparing BMI to the upper limit of the normal BMI range...
Health & Fitness
EN
LDL to HDL Cholesterol Ratio Calculator Calculates the LDL to HDL cholesterol ratio to help assess cardiovascular risk.
Health & Fitness
EN
Annual Salary to Hourly Wage Calculator Convert an annual salary into an hourly wage based on weeks worked per year and...
Financial Calculators
EN
Pack Years Smoking Calculator Estimates lifetime smoking exposure in pack-years based on daily cigarette consu...
Health & Fitness
EN
Total Surface Area of a Cylinder Calculates the total surface area of a right circular cylinder including top and...
Math Calculators
EN
IV Drip Rate Calculator Calculate the required IV drip rate in drops per minute (gtt/min).
Health & Fitness
EN
Corrected Serum Sodium Calculator Calculates corrected serum sodium level in patients with hyperglycemia using the...
Health & Fitness
EN
eGFR (Estimated Glomerular Filtration Rate) Calculator Estimates kidney function using the simplified MDRD equation based on serum crea...
Health & Fitness
EN
Solar Panel Energy Production Calculator Calculate the total electricity generated by a solar panel system over a given p...
Science & Engineering
EN