Convert units

$0.003 per call · failed calls are never charged · no account or API key needed

Convert between units of length, mass, volume (incl. US cups and gallons), temperature (c, f, k), speed, area, data size (kB vs KiB), time, energy and pressure. Example units: km, mi, lb, kg, floz, ml, mph, kn, acre, gib, kwh, psi. Use when exact conversions matter.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

NameTypeDescription
value (required)numberThe amount
from (required)stringUnit to convert from
to (required)stringUnit to convert to

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/units/convert?value=10&from=km&to=mi"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/units/convert?value=10&from=km&to=mi&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum, Monad, World Chain or Tempo) and retries.

Example result

{
  "value": 10,
  "from": "km",
  "to": "mi",
  "kind": "length",
  "result": 6.2137119224
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is units_convert, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

Related tools