Available Calculators
We make your calculations in finance, health, math, calendar, geometry, and more easy. Fast and friendly calculators.
Mathematics
Fraction Calculator
Add, subtract, multiply, and divide fractions.
Least Common Multiple (LCM)
Calculate the Least Common Multiple (LCM) of two or more numbers.
Percentage Calculator
Find percentages of values.
Rule of Three
Solve direct and inverse proportions.
Weighted Average
Calculate averages with different weights.
Geometry
Circle Area
Find the area from the radius.
Cube Area
Calculate the surface area of a cube.
Cylinder Area
Calculate the surface area of a cylinder.
Sphere Area
Calculate the surface area of a sphere.
Square Area (Image)
Calculate area with visual aid.
Square Area (Simple)
Simple version for area calculation.
Square Area Calculator
Calculate the area of a square by entering the side length. Use a period as a decimal separator.
Statistics
Mean, Median and Mode
Find central measures of a dataset.
Standard Deviation
Calculate sample or population standard deviation.
Statistical Variance
Calculate sample or population variance.
Finance
Compound Interest
Calculate investment growth.
Simple Interest
Calculate interest on the principal amount.
Health
Basal Metabolic Rate (BMR)
Estimate your resting calories.
Body Fat Percentage
Calculate your estimated body fat.
P/F Ratio Calculator
Assess lung function (PaO2/FiO2).
Calendar
Add/Remove Days to a Date
Find the future or past date.
Chronological Age
Calculate someone's exact age.
Days Between Dates
Find out how many days are between two dates.
Hours and Minutes Calculator
Add or subtract times.
How to Calculate Overtime
Understand overtime pay calculation.
Worked Hours Calculator
Calculate total hours and overtime.
Converters
Binary Numbers Calculator
Convert and calculate in base 2.
Currency Converter
Convert values between different currencies with updated rates.
Hexadecimal Numbers Calculator
Convert and calculate in base 16.
Roman Numeral Converter
Convert between Roman and decimal numbers.
Others
Click Counter (CPS Test)
Measure your clicks per second speed.
Gasoline Expenses for Trips
Estimate the trip's fuel cost.
Grade Scale Generator
Create a school grading scale.
Word and Character Counter
Count words and characters in a text.