Math and unit tools
Solve everyday math and convert units in a few taps.
Random Number GeneratorPick random numbers in any range, with no repeats and sorting if you want.
Grade CalculatorWork out your current course grade from weighted categories, and the score you need on the final.
Weighted Average CalculatorFind the weighted average of grades or values, each with its own weight.
Area CalculatorFind the area and perimeter of a rectangle, circle, triangle and other shapes.
Volume CalculatorFind the volume and surface area of a box, cylinder, sphere, cone and more.
Roman Numerals ConverterConvert numbers to Roman numerals and Roman numerals back to numbers.