Unit Convert MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 570 installs a week from npm. Last commit 28 Oct 2026.
Convert 100+ units offline: length, mass, temperature, volume, area, speed, data and time
Today is the operative word: we check Unit Convert MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add unit-convert-mcp -- npx -y @mrfentmen/unit-convert-mcp
{
"mcpServers": {
"unit-convert-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/unit-convert-mcp"
]
}
}
}
[mcp_servers.unit-convert-mcp]
command = "npx"
args = ["-y", "@mrfentmen/unit-convert-mcp"]
{
"mcpServers": {
"unit-convert-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/unit-convert-mcp"
]
}
}
}
{
"servers": {
"unit-convert-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mrfentmen/unit-convert-mcp"
]
}
}
}
Convert between units of length, weight, temperature, speed, and data size locally. No network...
Baking unit conversion (cups/grams/temp/recipe scaling). convert_amount, convert_temperature
100+ accurate calculators & converters: mortgage, loan, tax, BMI, dates, units, currency and more.
IANA time zone maths offline: the time right now anywhere, wall-clock conversion and DST
Parse WebVTT, SRT, or TTML for conformance, timing, overlaps, line length, and reading speed.
Classic hex dumps and byte stats offline: dump text, hex or base64 and convert between them
Render PDFs and images from templates, validate data and convert Office files to PDF.
Parse, validate and convert XML offline with a real parser: entities, CDATA, attributes
Answers built from our own checks of this server.