Number Base Converter

Value's digits are combined with From Base using the same formula at every position: decimalValue = decimalValue * fromBase + digit. From Base gets multiplied in three separate times for the default three-digit value, compounding its influence, while a change to Value only shifts one digit's contribution. That compounding is why a small change to From Base swings Decimal Value further than the same-sized change to Value.

To Base has a hard floor: the engine clamps it with Math.max(2, Math.min(36, Math.floor(...))), and 2 is the lowest value that clamp permits. Rounding 2.2 down lands back on 2, and rounding 1.8 down to 1 gets pushed back up to 2 by the same clamp — both directions return the identical starting value, which is why To Base looks unresponsive right at its own floor.

Not directly. From Base supports values up to 36, which covers hexadecimal in principle, but the Value field only accepts the digit characters 0 through 9 — there's no way to type a letter digit such as A through F into it. Any genuine hex number that needs one of those letter digits simply cannot be entered, regardless of what From Base is set to.

It means a digit you typed into Value is too large for the From Base you chose — for example, typing a 9 with From Base set to 2, since binary only allows the digits 0 and 1. The engine checks each digit against From Base and, instead of throwing an error, returns that text as the Converted Value while Decimal Value and Digit Count both fall back to 0.