Calculate rectangle area
Convert decimal to binary
Calculate area of a circle
Calculate combinations (nCr)
Calculate volume of a cube
Calculate volume of a cylinder
Calculate distance between points
Calculate factorial of a number
Generate Fibonacci sequence
Find Greatest Common Divisor
Convert to hexadecimal
Find Least Common Multiple
Convert to octal
Calculate percentages
Calculate percentage change
Find percentage of a number
Calculate permutations (nPr)
Check if number is prime
Calculate triangle sides
Solve quadratic equations
Generate random numbers
Convert to/from Roman numerals
Calculate line slope
Calculate sphere volume
Calculate trapezoid area
Calculate triangle area