happytails.ai

Origami paper size calculator

Open Origami paper size calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "origami-paper-size-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Linear scale from 0.01 to 100. Assumes the same folding design; thickness and practical folding limits may affect the result.",
  "implementation": {
    "fields": [
      {
        "key": "paperWidth",
        "label": "Reference sheet width",
        "value": 15,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "paperHeight",
        "label": "Reference sheet height",
        "value": 15,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "paperUnit",
        "label": "Paper size and output unit",
        "value": "cm",
        "type": "select",
        "values": [
          "mm",
          "cm",
          "m",
          "in",
          "ft",
          "yd"
        ]
      },
      {
        "key": "referenceSize",
        "label": "Measured feature on the reference model",
        "value": 6,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "referenceUnit",
        "label": "Reference model unit",
        "value": "cm",
        "type": "select",
        "values": [
          "mm",
          "cm",
          "m",
          "in",
          "ft",
          "yd"
        ]
      },
      {
        "key": "targetSize",
        "label": "Desired size of that same feature",
        "value": 9,
        "type": "number",
        "min": 0,
        "max": 1000000000,
        "step": "any"
      },
      {
        "key": "targetUnit",
        "label": "Desired model unit",
        "value": "cm",
        "type": "select",
        "values": [
          "mm",
          "cm",
          "m",
          "in",
          "ft",
          "yd"
        ]
      }
    ],
    "input": false,
    "live": true,
    "presentation": "metrics",
    "note": "Scale a known sheet for a larger or smaller version of the same origami design. Measure the same model feature in both sizes; paper thickness can limit how closely the result scales. Changing units keeps the entered numbers. All calculations stay on your device. Download the report for formulas, assumptions and calculated values.",
    "experience": {
      "automatic": true,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
      "helpParts": [
        "Change the input or settings to update your result.",
        "Results update as you type.",
        "Up to 1,000,000 characters."
      ],
      "action": null
    },
    "mode": "automatic",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Find the starting sheet size for a larger or smaller version of an origami model you have already measured.

How to use Origami paper size calculator
  1. Enter the measured inputs and select their units.
  2. Review the calculated dimensions, counts and rounding.
  3. Download the result and verify it against a sample before making the full project.

Useful next steps

Choose one matching feature

Start with the sheet width and height used for your reference model. Measure a recognizable feature on the finished model, then enter the size you want that same feature to become. Different features or folding designs cannot be compared this way.

Scale the whole sheet

A model feature that measures 6 cm and needs to become 9 cm calls for a 1.5 times linear scale. A 15 × 15 cm sheet becomes 22.5 × 22.5 cm. Its area increases by 2.25 times, not 1.5 times.

Save the calculation

Download a CSV of the results or instructions, a readable text report and a JSON report with values, formulas and assumptions. Calculations run locally on your device. Unit changes keep the numbers already entered, so check the selected units before using the result.