miles per hour → kilometers per hour

Convert miles per hour to kilometers per hour (speed). Pass ?value=N.

1 miles per hour = 1.609344 kilometers per hour. To convert, multiply the number of miles per hour by 1.609344. The reverse direction is kilometers per hour → miles per hour.

Common miles per hour to kilometers per hour values

miles per hour	kilometers per hour
1 miles per hour	1.609344 kilometers per hour
2 miles per hour	3.218688 kilometers per hour
5 miles per hour	8.04672 kilometers per hour
10 miles per hour	16.09344 kilometers per hour
25 miles per hour	40.2336 kilometers per hour
100 miles per hour	160.9344 kilometers per hour
1000 miles per hour	1609.344 kilometers per hour

Input

Field	Type	Description
value *	string	Numeric value to convert

Example output

{
  "value": 1,
  "from": "miles-per-hour",
  "to": "kilometers-per-hour",
  "result": 1.609344
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/convert/miles-per-hour-to-kilometers-per-hour?value=1"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/convert/miles-per-hour-to-kilometers-per-hour?value=1");

No wallet? Pay with compute

This is a pure-CPU tool, so an agent without a wallet can pay with proof-of-work instead of USDC: fetch a challenge, solve it (16 leading zero bits), and resend with the X-Pow-Solution header.

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=convert-miles-per-hour-to-kilometers-per-hour")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/convert/miles-per-hour-to-kilometers-per-hour", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

Related tools