Bitrate Size

{
  "asOf": "2026-10-11T14:38:33.581Z",
  "bitrateKbps": 1411.2,
  "bytesPerSecond": 176400,
  "degraded": false,
  "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
  "megabytesPerHour": 635.04,
  "minutes": 60,
  "notChecked": [
    "container overhead (WAV header 44 bytes, tags, MP4 or Ogg framing) which adds a small amount",
    "variable bitrate (VBR) files, where the average differs from the target",
    "…1 more"
  ],
  "pcm": true,
  "reasons": [
    "Uncompressed PCM: sample rate x bit depth x channels bits per second.",
    "That is 176.4 kilobytes per second, or 635.04 MB per hour."
  ],
  "seconds": 3600,
  "sizeBytes": 635040000,
  "sizeGB": 0.63504,
  "sizeGiB": 0.59142709,
  "sizeKB": 635040,
  "sizeKiB": 620156.25,
  "sizeMB": 635.04,
  "sizeMiB": 605.621338,
  "source": "size = bitrate x duration / 8; PCM bitrate = sample rate x bit depth x channels, computed locally",
  "summary": "1411.2 kbps for 3600 s is 635040000 bytes (635.04 MB, 605.621338 MiB).",
  "verdict": "COMPUTED"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://audio-calc.x402tookit.com/bitrate-size?bitDepth=16&channels=2&sampleRate=44100&seconds=3600'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://audio-calc.x402tookit.com/bitrate-size?bitDepth=16&channels=2&sampleRate=44100&seconds=3600' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

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

// Pays at most $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Faudio-calc.x402tookit.com%2Fbitrate-size
const res = await pay("https://audio-calc.x402tookit.com/bitrate-size?bitDepth=16&channels=2&sampleRate=44100&seconds=3600");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://audio-calc.x402tookit.com/bitrate-size?bitDepth=16&channels=2&sampleRate=44100&seconds=3600")
    print(res.status_code, res.text)