Free Online Calculators

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

329 Calculators 16 Categories 100% Free

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Simple Interest Calculator

#1

Calculate simple interest on principal amount

Financial Calculators 5 variants

Mean Arterial Pressure (MAP) Calculator

Estimates the average arterial pressure during a single cardiac cycle using systolic and diastolic blood pressure values.

Health & Fitness 5 variants

Concrete Slab Weight Calculator

Calculate the total weight of a concrete slab based on its dimensions and concrete density.

Construction & Home 4 variants

Creatinine Clearance Calculator (24-Hour Urine Method)

Calculates creatinine clearance in mL/min using the 24-hour urine collection method.

Health & Fitness 4 variants

Body Fat Mass Calculator

Calculate total body fat mass based on body weight and body fat percentage.

Health & Fitness 5 variants

Gear Ratio Calculator

Calculate the gear ratio between two gears based on their number of teeth.

Science & Engineering 4 variants
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329 total
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
Creatinine Clearance (Cockcroft-Gault) Calculator Estimates creatinine clearance using the Cockcroft-Gault equation.
Health & Fitness
EN
Pulse Pressure Calculator Calculates pulse pressure by subtracting diastolic blood pressure from systolic...
Health & Fitness
EN
Total Cholesterol to HDL Ratio Calculator Calculates the Total Cholesterol to HDL Cholesterol ratio, a cardiovascular risk...
Health & Fitness
EN
Mean Corpuscular Volume (MCV) Calculator Estimates the average size of red blood cells using hematocrit and RBC count.
Health & Fitness
EN