4629 · Conversion · v1.0.0
Base Converter
Beyond decimal. Beyond machine integers.
Convert signed arbitrary-size integers between bases 2–36 or custom prefix-free Unicode token alphabets, without floating-point rounding.
Text-only workspace. Never executes input. General limit: 200,000 UTF-16 units per editor; some operations have tighter limits.
Private session · history disabled
Opt in to store up to five recent text transformations on this device. Never stored on an account or synchronized. Files are never included. Disable history stops new saves; Clear history deletes saved items.
How to use Base Converter
Paste input, select a command and its options, then run the transformation. Review diagnostics before copying or downloading the result. Input is not executed.
Standard digits are 0–9 and A–Z; lowercase input is accepted only in standard mode. Custom alphabets are ordered JSON arrays such as ["🌑","🌕"]. Tokens may contain multiple code points, but must be unique, prefix-free and contain neither whitespace nor minus signs. No normalization is applied.
This is an integer converter. Fractions, scientific notation and numeric separators are rejected. Limits: 10,000 input tokens and 256 alphabet entries.
Privacy and boundaries
Editor contents stay in your browser. Transformations run in a disposable worker and are never sent to a formatting or AI service. History starts disabled; enabling it writes text to local browser storage only. Clearing that history removes this tool’s saved entries, not data saved by other applications. The surrounding website may load its normal navigation and analytics, but the utility workspace is excluded from content-interaction capture.
Use the labeled operation selector for the available capabilities. Keyboard users can reach every control with Tab; Ctrl or Command plus K opens the command palette. Copy requires clipboard permission. Download creates a local text file. Clear removes the current workspace; it does not automatically delete an opted-in history. Inputs and outputs are always rendered as text, never as a runnable preview.
What is base 22?
Base 22 is positional notation with 22 ordered digit symbols. Each position has a weight equal to a power of 22. The alphabet determines which symbol represents each digit.