{
 "name": "Calcnaut",
 "url": "https://calcnaut.com",
 "description": "Especificacao legivel por maquina das calculadoras de construcao do Calcnaut: inputs, formulas, constantes e fontes. Feita para ser consultada e citada por agentes e assistentes.",
 "license": "Uso livre com atribuicao e ligacao para a pagina da calculadora.",
 "attribution": "Fonte: Calcnaut (https://calcnaut.com)",
 "contact": "https://calcnaut.com/about/",
 "count": 28,
 "updated": "2026-08-31",
 "calculators": [
  {
   "id": "asphalt-calculator",
   "name": "Asphalt Calculator",
   "url": "https://calcnaut.com/asphalt-calculator/",
   "spec": "https://calcnaut.com/api/asphalt-calculator.json",
   "computes": [
    "Asphalt needed",
    "Volume",
    "Loose lay thickness",
    "Truck loads",
    "Area",
    "Tons before waste"
   ]
  },
  {
   "id": "block-wall-calculator",
   "name": "Block Wall Calculator",
   "url": "https://calcnaut.com/block-wall-calculator/",
   "spec": "https://calcnaut.com/api/block-wall-calculator.json",
   "computes": [
    "Blocks needed",
    "Courses (rows high)",
    "Blocks per course",
    "80 lb mortar bags",
    "Grout (core fill)",
    "Estimated block cost"
   ]
  },
  {
   "id": "board-foot-calculator",
   "name": "Board Foot Calculator",
   "url": "https://calcnaut.com/board-foot-calculator/",
   "spec": "https://calcnaut.com/api/board-foot-calculator.json",
   "computes": [
    "Board feet",
    "Per board",
    "Volume",
    "Estimated cost"
   ]
  },
  {
   "id": "brick-calculator",
   "name": "Brick Calculator",
   "url": "https://calcnaut.com/brick-calculator/",
   "spec": "https://calcnaut.com/api/brick-calculator.json",
   "computes": [
    "Bricks needed",
    "80 lb mortar bags",
    "Wall area",
    "Estimated brick cost"
   ]
  },
  {
   "id": "brick-wall-calculator",
   "name": "Brick Wall Calculator",
   "url": "https://calcnaut.com/brick-wall-calculator/",
   "spec": "https://calcnaut.com/api/brick-wall-calculator.json",
   "computes": [
    "Bricks needed",
    "Courses (rows high)",
    "80 lb mortar bags",
    "Wall area",
    "Estimated brick cost"
   ]
  },
  {
   "id": "cinder-block-calculator",
   "name": "Cinder Block Calculator",
   "url": "https://calcnaut.com/cinder-block-calculator/",
   "spec": "https://calcnaut.com/api/cinder-block-calculator.json",
   "computes": [
    "Cinder blocks",
    "80 lb mortar bags",
    "Courses (rows high)",
    "Blocks per course",
    "Estimated block cost"
   ]
  },
  {
   "id": "concrete-block-calculator",
   "name": "Concrete Block Calculator",
   "url": "https://calcnaut.com/concrete-block-calculator/",
   "spec": "https://calcnaut.com/api/concrete-block-calculator.json",
   "computes": [
    "Concrete blocks",
    "80 lb mortar bags",
    "Courses (rows high)",
    "Blocks per course",
    "Estimated block cost"
   ]
  },
  {
   "id": "concrete-calculator",
   "name": "Concrete Calculator",
   "url": "https://calcnaut.com/concrete-calculator/",
   "spec": "https://calcnaut.com/api/concrete-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (to 0.25)",
    "80 lb bags",
    "Estimated weight",
    "Metric",
    "Volume with waste"
   ]
  },
  {
   "id": "concrete-footing-calculator",
   "name": "Concrete Footing Calculator",
   "url": "https://calcnaut.com/concrete-footing-calculator/",
   "spec": "https://calcnaut.com/api/concrete-footing-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (to 0.25)",
    "80 lb bags",
    "60 lb bags",
    "40 lb bags",
    "Estimated weight"
   ]
  },
  {
   "id": "concrete-slab-calculator",
   "name": "Concrete Slab Calculator",
   "url": "https://calcnaut.com/concrete-slab-calculator/",
   "spec": "https://calcnaut.com/api/concrete-slab-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (rounded to 0.25)",
    "80 lb bags",
    "60 lb bags",
    "40 lb bags",
    "Estimated weight"
   ]
  },
  {
   "id": "concrete-stairs-calculator",
   "name": "Concrete Stairs Calculator",
   "url": "https://calcnaut.com/concrete-stairs-calculator/",
   "spec": "https://calcnaut.com/api/concrete-stairs-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (to 0.25)",
    "80 lb bags",
    "Estimated weight",
    "Metric",
    "Volume with waste"
   ]
  },
  {
   "id": "curb-and-gutter-calculator",
   "name": "Curb and Gutter Calculator",
   "url": "https://calcnaut.com/curb-and-gutter-calculator/",
   "spec": "https://calcnaut.com/api/curb-and-gutter-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (to 0.25)",
    "80 lb bags",
    "Estimated weight",
    "Metric",
    "Volume with waste"
   ]
  },
  {
   "id": "drywall-calculator",
   "name": "Drywall Calculator",
   "url": "https://calcnaut.com/drywall-calculator/",
   "spec": "https://calcnaut.com/api/drywall-calculator.json",
   "computes": [
    "Sheets to buy",
    "Area to cover",
    "Area with waste",
    "Leftover (offcuts)",
    "Drywall screws",
    "Joint compound"
   ]
  },
  {
   "id": "fence-calculator",
   "name": "Fence Calculator",
   "url": "https://calcnaut.com/fence-calculator/",
   "spec": "https://calcnaut.com/api/fence-calculator.json",
   "computes": [
    "Pickets needed",
    "Posts needed",
    "Post length to buy",
    "Rails needed",
    "80 lb concrete bags",
    "60 lb concrete bags"
   ]
  },
  {
   "id": "flooring-calculator",
   "name": "Flooring Calculator",
   "url": "https://calcnaut.com/flooring-calculator/",
   "spec": "https://calcnaut.com/api/flooring-calculator.json",
   "computes": [
    "Boxes to buy",
    "Floor area",
    "Area with waste",
    "Leftover (keep for repairs)",
    "Planks or tiles",
    "Underlayment"
   ]
  },
  {
   "id": "gravel-calculator",
   "name": "Gravel Calculator",
   "url": "https://calcnaut.com/gravel-calculator/",
   "spec": "https://calcnaut.com/api/gravel-calculator.json",
   "computes": [
    "Gravel needed",
    "Volume",
    "Weight",
    "0.5 ft³ bags (~50 lb)",
    "Area",
    "Metric"
   ]
  },
  {
   "id": "mortar-calculator",
   "name": "Mortar Calculator",
   "url": "https://calcnaut.com/mortar-calculator/",
   "spec": "https://calcnaut.com/api/mortar-calculator.json",
   "computes": [
    "80 lb mortar bags",
    "Units in the wall",
    "Or: 70 lb masonry cement bags",
    "Or: sand to mix your own",
    "Wall area",
    "Estimated mortar cost"
   ]
  },
  {
   "id": "paver-calculator",
   "name": "Paver Calculator",
   "url": "https://calcnaut.com/paver-calculator/",
   "spec": "https://calcnaut.com/api/paver-calculator.json",
   "computes": [
    "Pavers needed",
    "Area",
    "Bedding sand (1 in)",
    "0.5 ft³ sand bags",
    "Gravel base",
    "Polymeric joint sand (50 lb)"
   ]
  },
  {
   "id": "pool-volume-calculator",
   "name": "Pool Volume Calculator",
   "url": "https://calcnaut.com/pool-volume-calculator/",
   "spec": "https://calcnaut.com/api/pool-volume-calculator.json",
   "computes": [
    "Pool volume",
    "Metric",
    "Cubic meters",
    "Volume",
    "Surface area",
    "Average depth"
   ]
  },
  {
   "id": "rebar-calculator",
   "name": "Rebar Calculator",
   "url": "https://calcnaut.com/rebar-calculator/",
   "spec": "https://calcnaut.com/api/rebar-calculator.json",
   "computes": [
    "20 ft bars to buy",
    "Total rebar length",
    "Approx. weight",
    "Grid ties (intersections)",
    "Estimated rebar cost"
   ]
  },
  {
   "id": "retaining-wall-calculator",
   "name": "Retaining Wall Calculator",
   "url": "https://calcnaut.com/retaining-wall-calculator/",
   "spec": "https://calcnaut.com/api/retaining-wall-calculator.json",
   "computes": [
    "Wall blocks",
    "Courses (rows high)",
    "Blocks per course",
    "Cap blocks (top row)",
    "Base gravel pad",
    "Drainage gravel"
   ]
  },
  {
   "id": "roof-pitch-calculator",
   "name": "Roof Pitch Calculator",
   "url": "https://calcnaut.com/roof-pitch-calculator/",
   "spec": "https://calcnaut.com/api/roof-pitch-calculator.json",
   "computes": [
    "Roof pitch",
    "Roof angle",
    "Slope (grade)",
    "Rafter length multiplier",
    "Rafter length (with overhang)",
    "Roof covering area"
   ]
  },
  {
   "id": "roofing-calculator",
   "name": "Roofing Calculator",
   "url": "https://calcnaut.com/roofing-calculator/",
   "spec": "https://calcnaut.com/api/roofing-calculator.json",
   "computes": [
    "Roofing squares needed",
    "Shingle bundles",
    "Underlayment rolls",
    "Roof area (with waste)",
    "Building footprint",
    "Roofing nails (approx.)"
   ]
  },
  {
   "id": "sonotube-calculator",
   "name": "Sonotube Calculator",
   "url": "https://calcnaut.com/sonotube-calculator/",
   "spec": "https://calcnaut.com/api/sonotube-calculator.json",
   "computes": [
    "Concrete needed",
    "Order ready-mix (to 0.25)",
    "80 lb bags",
    "Estimated weight",
    "Metric",
    "Per tube"
   ]
  },
  {
   "id": "square-footage-calculator",
   "name": "Square Footage Calculator",
   "url": "https://calcnaut.com/square-footage-calculator/",
   "spec": "https://calcnaut.com/api/square-footage-calculator.json",
   "computes": [
    "Square footage",
    "Square yards",
    "Square meters",
    "Acres",
    "Area before waste",
    "Perimeter"
   ]
  },
  {
   "id": "stair-calculator",
   "name": "Stair Calculator",
   "url": "https://calcnaut.com/stair-calculator/",
   "spec": "https://calcnaut.com/api/stair-calculator.json",
   "computes": [
    "Number of steps (risers)",
    "Actual riser height",
    "Number of treads",
    "Total run",
    "Stringer length",
    "Stair angle"
   ]
  },
  {
   "id": "tile-calculator",
   "name": "Tile Calculator",
   "url": "https://calcnaut.com/tile-calculator/",
   "spec": "https://calcnaut.com/api/tile-calculator.json",
   "computes": [
    "Tiles needed",
    "Area",
    "Area with waste",
    "Thinset (50 lb bags)",
    "Grout",
    "Grout bags"
   ]
  },
  {
   "id": "topsoil-calculator",
   "name": "Topsoil Calculator",
   "url": "https://calcnaut.com/topsoil-calculator/",
   "spec": "https://calcnaut.com/api/topsoil-calculator.json",
   "computes": [
    "Topsoil needed",
    "Weight",
    "40 lb bags (0.75 ft³)",
    "Weight",
    "Area",
    "Metric"
   ]
  }
 ]
}