Hex Converter Plus exists for the moment a datasheet gives you a hex address, a networking task hands you a binary subnet mask, or a coding puzzle wants an octal permission code translated into something you can actually read. Opening an app for a ten-second lookup is overkill. So we built Base Shift, a free base converter that runs right here in your browser. No install, no ads, no signup. Type a number in any base and the other three update as you go.
Convert bases now
It opens with a real example already loaded: the number 2026, converting live across decimal, binary, octal, and hex. Type in any field to change the value, or tap cells in the bit grid below to flip individual bits and watch every field recompute instantly.
How to use it
Four fields cover decimal, binary, octal, and hexadecimal. Type a number into any one of them and the other three recalculate immediately, no button to press. Each field only accepts the characters valid for its base, so a stray letter in the binary field simply gets ignored rather than breaking the conversion.
The bit grid underneath is the fastest way to build a value from scratch: tap any cell to flip that bit on or off, and every field updates to match. Switch between 8-bit, 16-bit, and 32-bit width with the tabs at the top. Type a number too big for the current width and Base Shift grows the width automatically instead of cutting your number off. Your last value and width are saved on your device, so reopening the page picks up right where you left off. Nothing leaves your browser.
How it compares to Hex Converter Plus
Base Shift covers the core loop people actually reach for: type in one base, read the others, and use the bit grid to reason about individual bits visually. The full Hex Converter Plus app goes further, with a built-in calculator for arithmetic across bases, bitwise operation shortcuts, and a history of past conversions.
We kept the live, four-way conversion and added something the original app doesn’t have: a tappable bit grid that makes each bit’s place value tangible instead of abstract. We deliberately left out the calculator functions and conversion history, because a page you land on mid-search should answer the one conversion you need in seconds, not ask you to install anything first.
Our honest advice: use Base Shift for a quick lookup while you’re reading a datasheet, debugging a subnet mask, or double-checking a permission code. Install the full app if you regularly do arithmetic across bases or want your conversion history saved between sessions.
Get the full app
Hex Converter Plus is free on Android and adds cross-base arithmetic, bitwise operations, and saved conversion history on top of the basic binary, octal, decimal, and hex conversions.
Frequently asked questions
Can I convert binary, hex, and octal online without installing an app?
Yes. Base Shift works in any phone or laptop browser, needs no account, and converts between binary, octal, decimal, and hexadecimal live as you type. Your last value and bit width stay saved in your browser’s local storage, on your device only.
How does the bit grid work?
Each cell in the grid represents one bit, ordered from the highest place value on the left to the lowest on the right. Tapping a cell flips that bit between 0 and 1, and the decimal, binary, octal, and hex fields all update immediately to reflect the new value. It’s a fast way to build a specific bit pattern without doing the math yourself.
What happens if I type a number too big for the current bit width?
Base Shift automatically switches to the next bit width (8-bit to 16-bit to 32-bit) so your number still fits, instead of silently truncating it. You can also switch width manually with the tabs at the top; narrowing the width masks the value down to fit, the same way a real register would.
Is this the official Hex Converter Plus app?
No. Base Shift is an original tool we built, inspired by the everyday problem Hex Converter Plus solves. It is not affiliated with, endorsed by, or connected to its developer. If you want cross-base arithmetic and saved conversion history, get the app from the store above.
Does it work offline?
Yes. Once the page loads, every conversion runs locally in your browser with no server calls, so it keeps working even without a connection.
