mach → feet per second

Convert mach to feet per second (speed). Pass ?value=N.

1 mach = 1125.32808399 feet per second. To convert, multiply the number of mach by 1125.32808399. The reverse direction is feet per second → mach.

Common mach to feet per second values

mach	feet per second
1 mach	1125.32808399 feet per second
2 mach	2250.65616798 feet per second
5 mach	5626.64041995 feet per second
10 mach	11253.2808399 feet per second
25 mach	28133.2020997 feet per second
100 mach	112532.808399 feet per second
1000 mach	1125328.08399 feet per second

Input

Field	Type	Description
value *	string	Numeric value to convert

Example output

{
  "value": 1,
  "from": "mach",
  "to": "feet-per-second",
  "result": 1125.328084
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/convert/mach-to-feet-per-second?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/mach-to-feet-per-second?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-mach-to-feet-per-second")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/convert/mach-to-feet-per-second", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

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