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Percentage Calculator

Calculate percentages, percentage change, of a number and more.

Scientific Notation Converter

Convert between scientific notation and standard decimal form.

Convert between metric and imperial units across all major categories.

Statistics Calculator

Mean, median, mode, standard deviation and variance from any dataset.

BMI & Body Fat Calculator

BMI plus body fat percentage estimate from waist and height measurements.

Quadratic Equation Solver

Solve any quadratic equation — find real and complex roots.

Element Lookup Tool

Look up periodic table element properties — atomic number, mass, group.

Speed Distance Time Calculator

Calculate speed, distance or time from any two known values.

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin and Rankine.

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