Free Online Calculators

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

141 Calculators 14 Categories 100% Free

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Rental Yield Calculator

#1

Calculate the gross rental yield percentage of a property based on annual rental income and purchase price.

Financial Calculators 4 variants

Payback Period Calculator

Calculate how many years it takes to recover an initial investment based on constant annual cash inflow.

Financial Calculators 4 variants

Cap Rate (Capitalization Rate) Calculator

Calculate the capitalization rate to evaluate real estate investment returns.

Financial Calculators 4 variants

FEV1/FVC Ratio Calculator

Estimates lung function by calculating the percentage ratio between Forced Expiratory Volume in 1 second (FEV1) and Forced Vital Capacity (FVC).

Health & Fitness 4 variants

Mortgage Calculator

Calculate monthly mortgage payments including principal, interest, taxes, and insurance.

Financial Calculators 3 variants

Pulse Pressure Calculator

Calculates pulse pressure by subtracting diastolic blood pressure from systolic blood pressure.

Health & Fitness 4 variants
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Calculators

141 total
Anion Gap Calculator Calculates the anion gap using standard electrolyte values from a basic metaboli...
Health & Fitness
EN
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