Free Online Calculators

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

368 Calculators 16 Categories 100% Free

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Mid-Parental Height Calculator

#1

Estimates a child's expected adult height using the simple average of both parents' heights.

Health & Fitness 4 variants

Sweat Rate Calculator

Estimates an athlete’s sweat loss per hour during exercise.

Health & Fitness 4 variants

Gross Profit Calculator

Calculates total gross profit by subtracting Cost of Goods Sold (COGS) from Total Revenue.

Business & Retail 4 variants

Voltage Divider Calculator

Calculates the output voltage (Vout) of a two-resistor voltage divider circuit.

Electrical & Electronics 5 variants

Stroke Volume Calculator

Estimates the amount of blood pumped by the heart per beat using cardiac output and heart rate.

Health & Fitness 5 variants

Inflation Rate Calculator (CPI-Based)

Calculates the inflation rate between two periods using Consumer Price Index (CPI) values.

Financial Calculators 4 variants
All Tools Calculators Converters Generators Makers Checkers

All Calculators

368 total
Fat-Free Mass Index (FFMI) Calculator Estimates muscularity level based on body weight, body fat percentage, and heigh...
Health & Fitness
EN
Surface Speed Calculator Calculates the surface (linear) speed at the outer edge of a rotating object usi...
Science & Engineering
EN
Protein Calorie Percentage Calculator Calculates the percentage of total daily calories that come from protein.
Health & Fitness
EN
Full-Time Equivalent (FTE) Calculator Calculates the number of full-time equivalent employees based on total hours wor...
Business & Retail
EN
Household Electricity Carbon Footprint Calculator Estimates the monthly carbon emissions based on household electricity usage and...
Science & Engineering
EN
Serum Osmolality Calculator Estimates calculated serum osmolality using sodium, glucose, and blood urea nitr...
Health & Fitness
EN
Pool Chlorine Requirement Calculator Calculate how much chlorine (in grams) is needed to raise your swimming pool’s f...
Construction & Home
EN
Mass-Spring System Period Calculator Calculates the period of oscillation for a mass-spring system using Hooke’s Law.
Science & Engineering
EN
Total Daily Commute Cost Calculator Calculate the total daily round-trip commute cost including fuel expenses and th...
Travel & Geography
EN
Adjusted Body Weight (AdjBW) Calculator Calculates Adjusted Body Weight for clinical dosing and nutrition planning when...
Health & Fitness
EN
Sweat Rate Calculator Estimates an athlete’s sweat loss per hour during exercise.
Health & Fitness
EN
Terminal Velocity Calculator Calculate the terminal velocity of a falling object using mass, gravity, air den...
Science & Engineering
EN