Free calculators, converters, generators, and tools.
Popular Tools | New Tools | All Categories
BUILD YOUR OWN APP
Can't decide? Enter your options and let the app pick one ...
Generate random colors and display their HEX, RGB, and HSL ...
Generate one or more random dates within a specified range. ...
Estimate how much rainwater you can collect from a rooftop ...
Calculate common rafter length from run and pitch. Use this ...
Calculate BTU output needed from a radiator for a given ...
Convert angle measurements from radians to degrees. Use ...
Predict finish time for a new race distance based on a ...
Calculate Q1, Q2, Q3 quartiles from a dataset. Use this ...
Solve quadratic equations using coefficients a, b, and c. ...
Calculate the missing side of a right triangle using the ...
Solve proportions and missing values in equivalent ratios. ...
Calculate basic, complementary, union, and intersection ...
Check whether an integer is prime or composite. Use this ...
Calculate the prime factorization of an integer. Use this ...
Convert pounds to stone. Use this free browser-based pounds ...
Convert pounds to grams. Use this free browser-based pounds ...
Calculate concrete needed to set fence or deck posts in ...
Look up port ranges, classify a port number, and check ...
Calculate confidence interval for a population proportion. ...
Calculate Poisson probabilities for rare event counts. Use ...
Calculate number of plywood sheets needed to cover an area. ...
Compare pizza sizes by area and calculate cost per square ...
Convert your pet's age to human equivalent years for dogs ...
Calculate nPr — the number of ordered arrangements of r ...
Find the value at any percentile in a dataset. Use this ...
Calculate percentage increase or decrease between two ...
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.
XTRAW Tools
Free calculators, converters, generators, and simple apps for everyday decisions.