Calculators
Dekuz's calculators handle everyday number problems: percentages, ratios, fractions, averages and quick number-theory checks like GCD and LCM. Each tool runs in your browser and links to closely related calculators, such as the Percentage Calculator, Fraction Calculator and Ratio Calculator, so you can move between related tasks without leaving the page.
Age Calculator
Calculate exact age in years, months and days between two dates.
%Percentage Calculator
Find a percentage of any number instantly.
BMIBMI Calculator
Estimate body mass index from height and weight.
FRACFraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
RATIORatio Calculator
Simplify a two-number ratio and view its decimal relationship.
AVGAverage Calculator
Find the mean, sum, count, minimum and maximum of a list of numbers.
GCDGCD Calculator
Find the greatest common divisor of two integers.
LCMLCM Calculator
Find the least common multiple of two integers.
Δ%Percentage Change Calculator
Measure percentage increase or decrease from an old value to a new value.
PROPProportion Calculator
Solve a simple proportion in the form a/b = c/x.
√Square Root Calculator
Calculate the principal square root of a non-negative number.
POWExponent Calculator
Raise a base number to any numeric exponent.
MODModulo Calculator
Find the remainder after dividing one number by another.
GPAGPA Calculator
Calculate grade point average from letter grades and credit hours.
σStandard Deviation Calculator
Find the mean, variance and standard deviation of a list of numbers.
PRIMEPrime Number Checker
Check whether a number is prime and see its smallest factor.
ROMRoman Numeral Converter
Convert between numbers and Roman numerals in both directions.