Units-LE
Extract every quantity with its unit, normalized, and refuse the ambiguous ones by name
No editor in the loop? npx -y units-le-mcp runs the same engine as an MCP server, so an agent can call extract_units with nothing else installed, and cargo install units-le puts the same check in a terminal. Every way to install it.
Overview
What Units-LE does
A number without its unit is not something you can compare. Units-LE finds every quantity in a tree and reports it twice: the text the document actually holds, and that value in one base unit. Four dimensions — duration in milliseconds, bytes, percent as a ratio, frequency in hertz. JSON, YAML, CSV, TOML, INI and dotenv are parsed; everything else is scanned as text, so a Kubernetes manifest or a Markdown table of limits yields its quantities rather than nothing. What it will not do is guess: a bare m is minutes in one config format, milliseconds in another and millicores in Kubernetes, so it comes back refused by name rather than resolved.
What people use it for
Reconcile two services
A timeout of 30s in one file and 30000 in another are the same number of milliseconds, and nothing about the text says so.
Catch the 7% nobody sees
1GB and 1GiB look identical at a glance and differ by seventy-three million bytes. The base value is where that shows.
Stop a build on an ambiguity
Strict mode exits non-zero if any quantity was refused, so a cpu value of 500m fails review instead of being guessed at.
Palette
5 commands
Open the command palette and type the name. Nothing is bound to a shortcut by default — the editor's keymap is the user's, not ours.
units-le.showPositions: Show the line and column of each quantity. On by default.
- Extract Quantities
units-le.extract - Scan Workspace for Quantities
units-le.scanWorkspace - Scan Folder for Quantities
units-le.scanFolder - Open Settings
units-le.openSettings - Help & Troubleshooting
units-le.help
Install
Install Units-LE
VS Code
ext install nolindnaidoo.units-leOpen Quick Open (Cmd/Ctrl+P) and paste.
Cursor / Windsurf
cursor --install-extension nolindnaidoo.units-leCursor, Windsurf, VSCodium and the other VS Code forks pull from Open VSX. The id is the same as on the Marketplace.
AI agents
npx -y units-le-mcpRuns Units-LE's engine as an MCP server, so an agent can call extract_units with no editor involved. VS Code 1.101+ needs nothing — the extension registers it for you.
Channels
Where it ships
One engine, 5 places to get it. Copy the one for the editor you use.
Links
Where Units-LE lives
- VS Code Marketplaceunits-le
- Open VSXfor Cursor, Windsurf and VSCodium
- npmunits-le-mcp
- GitHubsource, issues, changelog
- MCP registryio.github.nolindnaidoo/units-le
The family
The other 16
String-LEExtract every string in a codebase, so a person can read them
Numbers-LEExtract every hardcoded number in a codebase, so a person can check them
Paths-LEExtract every file path in a codebase, and say whether it still points at anything
Colors-LEExtract every color in a codebase, and say which ones are not in your palette
URLs-LEExtract every URL in a codebase, with its protocol and exact position
Dates-LEExtract every date and timestamp, and the exact instant each one resolves to
IDs-LEExtract every UUID, ULID, NanoID, ObjectId and Snowflake, and decode the time inside
IPs-LEExtract every IP address, CIDR block and MAC, normalized and classified by scope
Regex-LEFind every regex in a codebase, and report which can be driven into catastrophic backtracking
Scrape-LECheck whether a page is scrapeable before the scraper is written, and say when it cannot tell
Versions-LEFind where one dependency is constrained differently across a repository's manifests
i18n-LEIdentify the i18n library a project uses, then audit its catalogs by that library's rules
DecisionLintLint Jev and Luna questions before they are sent: the questions you write for TypeSafe's Jev, OpenAI's Decisions API (gpt-6-luna) or any platform that serves one, as you type, with no API key and no network calls. An optional command asks the model itself to check a file
Secrets-LEFind hardcoded credentials in a codebase, and never print one into the report
EnvSync-LECompare the dotenv files in a tree, and say which keys are missing from which
Unicode-LEFind the Unicode that hides meaning — bidi controls, invisibles, homoglyphs, mixed scripts