Convert

using System;
using System.Text;
//Write a program to convert from any numeral system of given
//base s to any other numeral system of base d (2 ≤ s, d ≤  16).
class AnyNumeralSystem
{
    static void Main()
    {
        Console.WriteLine("Enter number: ");
        string convert = Console.ReadLine();
        Console.WriteLine("Enter bace of numeral system: ");
        int bace = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter new bace of numeral system: ");
        int newBace = int.Parse(Console.ReadLine());

        //convert to decimal system
        int decimalNum = 0;
        for (int i = convert.Length-1, reverse = 0; i>= 0; i--, reverse++)
        {
            decimalNum += (convert[i]-'0') * (int)Math.Pow(bace, reverse);
        }
        //convert to new system
        StringBuilder builder = new StringBuilder();
        while (decimalNum > 0)
        {
            builder.Insert(0, decimalNum % newBace);
            decimalNum /= newBace;
        }
        Console.WriteLine("Converted number: \n{0}",builder.ToString());
    }
}