{ "schemaVersion": 1, "slug": "tile-calculator", "category": "household", "kind": "implementation", "independentValidation": false, "implementationHash": "538f611d2d22a5cd3bf1917455af27b371a0068dc67f9782b57b72ffc860b54a", "provenance": "Generated from the calculation contract used by the published page. Publication is not external validation.", "sourceFiles": [ "data/calculators/tile-calculator.json", "src/engine.js" ], "runtimeSource": "/sources/engine.txt", "runtimeHash": "5c888d8898afbdee36267bb9977829e1e2ac568f6677c8ee87469c139864645c", "scope": "The compute function records implemented equations, constants, lookup tables and custom rules. Inputs record defaults and allowed values; outputs record precision and units. Defaults are examples, not recommendations. General background references are not evidence for this specific algorithm.", "publishedFormula": { "formula": "tile area = length_in × width_in/144; required = ceil(surface/tile area × (1 + waste/100)); boxes = ceil(required/tiles per box)", "vars": [], "note": "This is an area estimate, not a layout, grout-joint or cutting plan. Confirm box coverage and the installer’s allowance." }, "externalEvidence": null, "contract": { "compute": "try{if((([\"dimensions\"].includes(String(areaMode)))&&(!Number.isFinite(length)||length<0.001||length>1000))||(([\"dimensions\"].includes(String(areaMode)))&&(!Number.isFinite(width)||width<0.001||width>1000))||((true)&&(!Number.isFinite(tileLength)||tileLength<0.5||tileLength>120))||((true)&&(!Number.isFinite(tileWidth)||tileWidth<0.5||tileWidth>120))||((true)&&(!Number.isFinite(waste)||waste<0||waste>50))||(([\"area\"].includes(String(areaMode)))&&(!Number.isFinite(areaInput)||areaInput<0.001||areaInput>1000000))||((true)&&(!Number.isFinite(tilesPerBox)||tilesPerBox<1||tilesPerBox>10000))||((true)&&(!Number.isFinite(pricePerBox)||pricePerBox<0||pricePerBox>1000000)))throw new Error('inputError');const calculate=function(){const h=(function context() {\n const DAY=86400000;\n const own=(o,k)=>Object.prototype.hasOwnProperty.call(o,k);\n const fail=()=>{throw new Error('inputError');};\n const num=(v,min=-Infinity,max=Infinity,integer=false)=>{\n if(!Number.isFinite(v)||vmax||(integer&&!Number.isInteger(v)))fail();return v;\n };\n const choice=(v,values)=>{if(!values.includes(v))fail();return v;};\n const date=s=>{if(typeof s!=='string'||!/^\\d{4}-\\d{2}-\\d{2}$/.test(s)||s.startsWith('0000'))fail();const d=new Date(s+'T00:00:00Z');if(!Number.isFinite(+d)||d.toISOString().slice(0,10)!==s)fail();return d;};\n const iso=d=>{if(!Number.isFinite(+d)||d.getUTCFullYear()<1||d.getUTCFullYear()>9999)fail();return d.toISOString().slice(0,10);};\n const shift=(d,n)=>{const r=new Date(+d+n*DAY);iso(r);return r;};\n const month=(d,n)=>{const r=new Date(+d);r.setUTCDate(1);r.setUTCMonth(r.getUTCMonth()+n);const end=new Date(+r);end.setUTCMonth(end.getUTCMonth()+1,0);r.setUTCDate(Math.min(d.getUTCDate(),end.getUTCDate()));iso(r);return r;};\n const weekdays=['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'];\n const work=(d,count)=>{let n=Math.floor(count/7)*5;for(let k=0;k{let n=(b.getUTCFullYear()-a.getUTCFullYear())*12+b.getUTCMonth()-a.getUTCMonth();if(n>=0&&+month(a,n)>+b)n--;if(n<0&&+month(a,n)<+b)n++;return n;};\n return {DAY,own,fail,num,choice,date,iso,shift,month,weekdays,work,wholeMonths};\n})();const result=(function(v,h){\n const {num,choice}=h;choice(v.areaMode,['dimensions','area']);if(v.areaMode==='dimensions'){num(v.length,0.001,1000);num(v.width,0.001,1000);}else num(v.areaInput,0.001,1e6);\n num(v.tileLength,0.001,120);num(v.tileWidth,0.001,120);num(v.waste,0,100);num(v.tilesPerBox,1,10000,true);num(v.pricePerBox,0,1e6);\n const area=v.areaMode==='area'?v.areaInput:v.length*v.width,tileArea=v.tileLength*v.tileWidth/144,raw=area/tileArea;\n const ceil=x=>Math.ceil(x-4*Number.EPSILON*Math.max(1,x)),tiles=ceil(raw),withWaste=ceil(raw*(1+v.waste/100)),boxesNeeded=ceil(withWaste/v.tilesPerBox);\n return {area,tileArea,tiles,withWaste,tilesPerSqft:1/tileArea,tileAreaSqIn:tileArea*144,tilesNeeded:tiles,tilesWithWaste:withWaste,boxesNeeded,totalCost:boxesNeeded*v.pricePerBox,tilesLeftOver:boxesNeeded*v.tilesPerBox-withWaste,coveragePerBox:tileArea*v.tilesPerBox};\n })({\"areaMode\":(areaMode),\"length\":(length),\"width\":(width),\"areaInput\":(areaInput),\"tileLength\":(tileLength),\"tileWidth\":(tileWidth),\"waste\":(waste),\"tilesPerBox\":(tilesPerBox),\"pricePerBox\":(pricePerBox)},h);return result;};const out=calculate();return Object.fromEntries([\"area\",\"tileArea\",\"tiles\",\"withWaste\",\"tilesPerSqft\",\"boxesNeeded\",\"totalCost\",\"tilesLeftOver\",\"coveragePerBox\"].map(k=>[k,out[k]??null]).concat(Object.entries(out).filter(([k])=>k.startsWith('__'))));}catch(error){return Object.assign(Object.fromEntries([\"area\",\"tileArea\",\"tiles\",\"withWaste\",\"tilesPerSqft\",\"boxesNeeded\",\"totalCost\",\"tilesLeftOver\",\"coveragePerBox\"].map(k=>[k,null])),{__error:error.message==='openingsExceedWallArea'?'openingsExceedWallArea':'inputError'});}", "inputs": [ { "name": "length", "type": "number", "default": 12, "min": 0.001, "max": 1000, "step": 0.01, "slider": true, "strictRange": true, "requiredValue": true, "showWhen": { "areaMode": [ "dimensions" ] } }, { "name": "width", "type": "number", "default": 10, "min": 0.001, "max": 1000, "step": 0.01, "slider": true, "strictRange": true, "requiredValue": true, "showWhen": { "areaMode": [ "dimensions" ] } }, { "name": "tileLength", "type": "number", "default": 12, "min": 0.5, "max": 120, "step": 0.5, "slider": true, "strictRange": true, "requiredValue": true }, { "name": "tileWidth", "type": "number", "default": 12, "min": 0.5, "max": 120, "step": 0.5, "slider": true, "strictRange": true, "requiredValue": true }, { "name": "waste", "type": "number", "default": 10, "min": 0, "max": 50, "step": 1, "slider": true, "strictRange": true, "requiredValue": true }, { "type": "select", "default": "dimensions", "options": [ { "value": "dimensions" }, { "value": "area" } ], "advanced": true, "name": "areaMode" }, { "type": "number", "default": 120, "min": 0.001, "max": 1000000, "step": 0.01, "strictRange": true, "requiredValue": true, "advanced": true, "name": "areaInput", "showWhen": { "areaMode": [ "area" ] } }, { "type": "number", "default": 10, "min": 1, "max": 10000, "step": 1, "strictRange": true, "requiredValue": true, "advanced": true, "name": "tilesPerBox" }, { "type": "number", "default": 35, "min": 0, "max": 1000000, "step": 0.01, "strictRange": true, "requiredValue": true, "advanced": true, "name": "pricePerBox" } ], "outputs": [ { "name": "area", "precision": 1, "unit": "sq ft", "notation": "auto" }, { "name": "tileArea", "precision": 3, "unit": "sq ft", "notation": "auto" }, { "name": "tiles", "precision": 0, "unit": "", "notation": "auto" }, { "name": "withWaste", "precision": 0, "unit": "", "notation": "auto" }, { "name": "tilesPerSqft", "precision": 2, "unit": "pcs", "notation": "auto" }, { "name": "boxesNeeded", "precision": 0, "unit": "", "notation": "auto" }, { "name": "totalCost", "precision": 2, "unit": "$", "notation": "auto" }, { "name": "tilesLeftOver", "precision": 0, "unit": "", "notation": "auto" }, { "name": "coveragePerBox", "precision": 2, "unit": "sq ft", "notation": "auto" } ], "interpret": null } }