Free Online Calculators

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

140 Calculators 14 Categories 100% Free

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Blood Alcohol Content (BAC) Calculator

#1

Estimates Blood Alcohol Content (BAC) using the Widmark formula based on alcohol consumed, body weight, distribution ratio, and time since drinking began.

Health & Fitness 4 variants

Reverse Text

Reverse the order of text.

Text Tools 0 variants

Price Elasticity of Demand (PED) Calculator

Calculates the Price Elasticity of Demand using the standard elasticity formula.

Business & Retail 4 variants

Body Roundness Index (BRI) Calculator

Estimates Body Roundness Index (BRI) using waist circumference and height measurements.

Health & Fitness 4 variants

Debt-to-Asset Ratio Calculator

Calculate the percentage of a company's or individual's assets financed by debt to measure financial leverage.

Financial Calculators 4 variants

Total Cholesterol to HDL Ratio Calculator

Calculates the Total Cholesterol to HDL Cholesterol ratio, a cardiovascular risk indicator.

Health & Fitness 4 variants
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140 total
Wind Chill Calculator Estimates how cold it feels based on air temperature and wind speed using the of...
Science & Engineering
EN
Basal Metabolic Rate (BMR) Calculator Calculate daily calorie needs at rest using the Mifflin-St Jeor equation.
Health & Fitness
EN
Overtime Pay Calculator Calculates total earnings including overtime pay.
Financial Calculators
EN
Final Exam Grade Calculator Calculate your overall course grade after including your final exam score.
Education & Learning
EN
Exam Study Time Estimator Estimates the total number of study hours required for an exam based on material...
Education & Learning
EN
Road Trip Cost Per Person Calculator Calculate how much each person pays for a road trip by splitting fuel and additi...
Travel & Geography
EN
Flight CO₂ Emissions Calculator Calculate the total carbon dioxide emissions for a flight based on distance trav...
Travel & Geography
EN
Cyclist Power-to-Weight Ratio Calculator Calculates a cyclist’s power-to-weight ratio in watts per kilogram (W/kg), a key...
Sports & Performance
EN
Waist-to-Hip Ratio (WHR) Calculator Calculates the Waist-to-Hip Ratio (WHR) to assess body fat distribution and pote...
Sports & Performance
EN
Loan-to-Value (LTV) Ratio Calculator Calculates the percentage of a property's value that is financed through a loan.
Financial Calculators
EN
Price-to-Rent Ratio Calculator Calculate the price-to-rent ratio to help determine whether buying or renting ma...
Financial Calculators
EN
Body Surface Area (BSA) Calculator Calculate Body Surface Area using the Mosteller formula.
Health & Fitness
EN