Byte size compare

bytesize-compare · version 1.0.0 · Units & sizes · free, no key needed

Compare two non-negative integer byte sizes by exact byte amounts.

Use when you need to: bytesize compare · compare binary byte sizes · compare kibibytes and mebibytes.

Supported

• bytesize compare
• compare binary byte sizes
• compare kibibytes and mebibytes

Not supported

• SI kB/MB/GB
• bits
• signed byte sizes
• sort a list of sizes
• approximate comparison

Behavior

• left and right are objects with a non-negative canonical integer value and a byte-size unit.
• Units are exactly B, KiB, MiB, GiB, TiB using the BYTE_SIZE table (powers of 1024).
• Each side is converted to bytes as a BigInt and those amounts are compared.
• cmp is the JSON integer -1, 0, or 1 according as left is less than, equal to, or greater than right.
• Input -0 is canonicalized to 0; other negatives, SI decimal prefixes, and bit units are rejected.

Input

• left (object, required)
• right (object, required)

Output

• cmp (one of -1, 0, 1, required)

Limits

• max digits: 1000
• units: ["B","KiB","MiB","GiB","TiB"]

Example

Request input:

{
  "left": {
    "value": "1",
    "unit": "KiB"
  },
  "right": {
    "value": "1024",
    "unit": "B"
  }
}

Response:

{
  "result": {
    "cmp": 0
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "bytesize-compare",
  "version": "1.0.0",
  "input": {
    "left": {
      "value": "1",
      "unit": "KiB"
    },
    "right": {
      "value": "1024",
      "unit": "B"
    }
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/bytesize-compare/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"left":{"value":"1","unit":"KiB"},"right":{"value":"1024","unit":"B"}}'

The machine-readable contract is at /v1/tools/bytesize-compare/versions/1.0.0.

CLI

node cli.mjs run bytesize-compare 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• Byte size add: Add non-negative integer byte-size terms in mixed IEC units and return the exact sum in a chosen unit.
• Byte size convert: Convert a non-negative integer byte size between IEC binary units as an exact rational.
• Mass compare: Compare two mixed-unit canonical integer mass amounts using exact nanogram BigInt values.
• Length compare: Compare two integer length measurements by exact nanometer amounts.
• Temperature compare: Compare two temperatures in C, F, or K by converting both to Kelvin rationals.
• Length add: Add integer length terms in mixed units and return the exact sum in a chosen unit.