# Quilt binding calculator - Human page: https://happytails.ai/en/calculators/quilt-binding-calculator/ - Markdown: https://happytails.ai/en/calculators/quilt-binding-calculator.md - Structured JSON: https://happytails.ai/agents/en/calculators/quilt-binding-calculator/index.json - Visibility: public ## Tool capabilities | Property | Value | | --- | --- | | Tool ID | `quilt-binding-calculator` | | Category | calculators | | Implementation | Registered implementation. Registration alone is not a production-quality guarantee. | | Browser execution | Automatic updates after valid input or file selection. | | Browser processing | Browser; see tool notes for network behavior. | | HTTP API | Not callable through HTTP. | | Browser-agent interface | run_current_tool | ### Implementation notes Plan straight width-of-fabric binding strips for a rectangular quilt. Enter usable fabric width and your join loss. The estimate includes whole strips and rounds fabric length to your purchase increment. Changing units keeps the entered numbers. All calculations stay on your device. Download the report for formulas, assumptions and calculated values. ### Inputs and settings No free-text input is required. Use the file inputs and/or settings below. | Setting | Meaning | Control type | Default | Constraints | | --- | --- | --- | --- | --- | | `width` | Quilt width | number | 60 | min=0 max=1000000000 step=any | | `height` | Quilt height | number | 80 | min=0 max=1000000000 step=any | | `quiltUnit` | Quilt measurement unit | select | "in" | Allowed: mm, cm, m, in, ft, yd | | `extraLength` | Extra binding for corners, tails and closure | number | 20 | min=0 max=1000000000 step=any | | `extraUnit` | Extra binding unit | select | "in" | Allowed: mm, cm, m, in, ft, yd | | `stripLength` | Usable length of each strip | number | 42 | min=0 max=1000000000 step=any | | `stripWidth` | Cut width of each strip | number | 2.5 | min=0 max=1000000000 step=any | | `joinLoss` | Length lost at each inter-strip join | number | 2.5 | min=0 max=1000000000 step=any | | `squaringAllowance` | Fabric length allowance for squaring | number | 0 | min=0 max=1000000000 step=any | | `stripUnit` | Strip and squaring measurement unit | select | "in" | Allowed: mm, cm, m, in, ft, yd | | `purchaseIncrement` | Fabric purchase increment | number | 0.125 | min=0 max=1000000000 step=any | | `purchaseUnit` | Fabric purchase and output unit | select | "yd" | Allowed: yd, m | ### Browser-agent workflow 1. Open the human page in a browser that supports WebMCP. 2. Discover the interface exposed by that page; use its actual schema. 3. Select files on the page first when the tool requires files. 4. Call `run_current_tool` with valid input and settings. 5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links. Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution. ### Planning specification Straight width-of-fabric strips only, not bias layout. Up to 100,000 strips. Join loss must be smaller than the strip length. Purchase length rounds up to your increment. This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support. ### Complete machine-readable capability record ```json { "id": "quilt-binding-calculator", "category": "calculators", "built": true, "requirements": "Straight width-of-fabric strips only, not bias layout. Up to 100,000 strips. Join loss must be smaller than the strip length. Purchase length rounds up to your increment.", "implementation": { "fields": [ { "key": "width", "label": "Quilt width", "value": 60, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "height", "label": "Quilt height", "value": 80, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "quiltUnit", "label": "Quilt measurement unit", "value": "in", "type": "select", "values": [ "mm", "cm", "m", "in", "ft", "yd" ] }, { "key": "extraLength", "label": "Extra binding for corners, tails and closure", "value": 20, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "extraUnit", "label": "Extra binding unit", "value": "in", "type": "select", "values": [ "mm", "cm", "m", "in", "ft", "yd" ] }, { "key": "stripLength", "label": "Usable length of each strip", "value": 42, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "stripWidth", "label": "Cut width of each strip", "value": 2.5, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "joinLoss", "label": "Length lost at each inter-strip join", "value": 2.5, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "squaringAllowance", "label": "Fabric length allowance for squaring", "value": 0, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "stripUnit", "label": "Strip and squaring measurement unit", "value": "in", "type": "select", "values": [ "mm", "cm", "m", "in", "ft", "yd" ] }, { "key": "purchaseIncrement", "label": "Fabric purchase increment", "value": 0.125, "type": "number", "min": 0, "max": 1000000000, "step": "any" }, { "key": "purchaseUnit", "label": "Fabric purchase and output unit", "value": "yd", "type": "select", "values": [ "yd", "m" ] } ], "input": false, "live": true, "presentation": "metrics", "note": "Plan straight width-of-fabric binding strips for a rectangular quilt. Enter usable fabric width and your join loss. The estimate includes whole strips and rounds fabric length to your purchase increment. 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.", "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 Calculate straight binding strips and fabric length, including your join losses, tail allowance and purchase increments. How can we improve this tool? Report a problem or share an idea. Please leave out private information. Your message and the tool name go to our team via PostHog. ### How to use Quilt binding 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 - [Fabric shrinkage calculator](https://happytails.ai/en/calculators/fabric-shrinkage-calculator/) ([Markdown](https://happytails.ai/en/calculators/fabric-shrinkage-calculator.md)) - [Cross-stitch fabric calculator](https://happytails.ai/en/calculators/cross-stitch-fabric-calculator/) ([Markdown](https://happytails.ai/en/calculators/cross-stitch-fabric-calculator.md)) ## Measure the quilt and usable strip length Enter the rectangular quilt dimensions and extra binding length for corners, tails and final closure. Use strip length after removing selvedges. Strip width is the width to cut, before folding. ### Account for every strip join Enter the length lost at each inter-strip join. Eight 42-inch strips with 2.5 inches lost at each of seven joins give 318.5 inches of usable binding. At a 2.5-inch cut width, those strips need 20 inches of fabric length, before any squaring allowance. ### 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.