watts → btus per hour

Convert watts to btus per hour (power). Pass ?value=N.

1 watts = 3.41214163313 btus per hour. To convert, multiply the number of watts by 3.41214163313. The reverse direction is btus per hour → watts.

Common watts to btus per hour values

watts	btus per hour
1 watts	3.41214163313 btus per hour
2 watts	6.82428326626 btus per hour
5 watts	17.0607081656 btus per hour
10 watts	34.1214163313 btus per hour
25 watts	85.3035408282 btus per hour
100 watts	341.214163313 btus per hour
1000 watts	3412.14163313 btus per hour

Input

Field	Type	Description
value *	string	Numeric value to convert

Example output

{
  "value": 1,
  "from": "watts",
  "to": "btus-per-hour",
  "result": 3.412142
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/convert/watts-to-btus-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/watts-to-btus-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-watts-to-btus-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/watts-to-btus-per-hour", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

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