# Paper & Print Calc – Paper Weight Converter

> Paper & Print Calc – Paper Weight Converter is a paid API for AI agents from paper-print-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Converts paper weight between GSM and US basis weight (bond, text, cover, etc.) and calculates sheet, ream, or stack weight by dimensions.

## Facts

- Endpoint: GET https://paper-print-calc.x402tookit.com/paper-weight?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/paper-print-calc-paper-weight-converter-4d9780e8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RTUd09_f5ZLmQVxSYlg9m

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability paper-print-calc-paper-weight-converter-4d9780e8
```

Example prompt: What is 90 gsm in US basis weight — give me bond, text, and cover equivalents — and how much would a ream of 500 A4 sheets weigh in grams?

## When to prefer this

Choose this endpoint when you need to convert between GSM and US basis weight systems, calculate physical sheet or stack weight for shipping/postage estimates, or verify paper spec equivalence across US and international standards — especially when you need all basis weight type equivalents at once rather than a single conversion.

## Known failure modes

- Missing both gsm and pounds parameters returns an error — at least one must be supplied
- Invalid basis weight type string falls back to default (bond) or returns a validation error
- Very unusual sheet dimensions may produce technically correct but practically unexpected results
- Non-numeric values for numeric fields will cause a schema validation failure

## How this service works

Convert paper gsm to US basis weight (bond, text, cover) and weigh a sheet, a ream or a mailing from its size.

## Output

Returns GSM, equivalent US basis weights across all standard types (bond, text, book, cover, index, bristol, tag), grams per sheet, ounces per sheet, and total stack weight in grams, kilograms, and pounds for the specified sheet size and sheet count, along with a plain-English summary.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "gsm": {
       "type": "number",
       "description": "Paper weight in grams per square metre (use gsm or pounds with type)"
      },
      "type": {
       "type": "string",
       "description": "Basis-weight type for pounds: bond, text, book, cover, index, bristol, tag (default bond)"
      },
      "pounds": {
       "type": "number",
       "description": "US basis weight in pounds (20 lb bond, 80 lb cover ...)"
      },
      "sheets": {
       "type": "integer",
       "description": "Number of sheets for the stack weight (default 500, a ream)"
      },
      "widthMm": {
       "type": "number",
       "description": "Sheet width in mm, to weigh a sheet (default 210, A4)"
      },
      "heightMm": {
       "type": "number",
       "description": "Sheet height in mm (default 297)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "gsm": {
       "type": [
        "null",
        "number"
       ]
      },
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "sheets": {
       "type": [
        "null",
        "number"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "widthMm": {
       "type": [
        "null",
        "number"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "heightMm": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
     
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/paper-print-calc-paper-weight-converter-4d9780e8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from paper-print-calc.x402tookit.com](https://www.zero.xyz/host/paper-print-calc.x402tookit.com/llms.txt)