API · /lumber-api

Lumber Calculator API

healthy 4,756 Subscribers

Lumber and framing material-estimation maths as an API, computed locally and deterministically. The boardfeet endpoint computes board feet — the standard volume unit for sawn timber, (thickness_in × width_in × length_ft) ÷ 12 — for a quantity of boards, with the total board feet and linear feet. The studs endpoint frames a wall: the number of vertical studs, ceil(wall length ÷ spacing) + 1 (16-inch ≈ 0.4064 m or 24-inch ≈ 0.6096 m centres), with two extra studs per opening, plus the plate boards for the top and bottom plates. The cost endpoint totals the lumber either by board foot (board feet × price per board foot) or by piece (pieces × price per piece). Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, carpentry and DIY app developers, framing and material take-off tools, and lumberyard and builder calculators. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is lumber and framing estimation; for drywall sheets use a drywall API and for concrete use a concrete API.

#lumber #board-feet #framing #construction #carpentry #developer-tools

api.oanor.com/lumber-api

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Machine-readable spec so AI agents can integrate this API.

/api/lumber-api/openapi.json

/api/lumber-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 90 ms; Server probes · 24h
Subscribers: 4,756; active
Total calls: 32; last 7 days

Full status page → · 20 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

2,000 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
Board-feet volume endpoint
Deterministic instant results
Imperial & metric units

Starter

€9.00 /month

25,000 calls / month
5 requests / second
Hard cap (429 above quota, no overage)
All framing material-estimation endpoints
Board-feet & linear-foot conversions
Waste-factor allowance input
Email support

Pro

€24.00 /month

150,000 calls / month
20 requests / second
Hard cap (429 above quota, no overage)
High-volume takeoff batches
Stud/joist count estimation
Cost-per-board-foot calculation
Priority support

Mega

€75.00 /month

900,000 calls / month
60 requests / second
Hard cap (429 above quota, no overage)
Estimating-SaaS scale throughput
Full framing & material schedule outputs
Bulk batch board-feet computation
SLA-backed support

Built by

PremiumApi

Related APIs

Other APIs with overlapping tags.

Deck Builder API

Deck-building maths as an API, computed locally and deterministically — the board, joist and fastener counts a homeowner or contractor needs to material out a rectangular deck. The boards endpoint turns the deck size into a real shopping list: rows = deck width ÷ (board width + gap), rounded up, so a 16 ft × 12 ft deck with a 5.5-inch board face (a 5/4×6) and a 1/8-inch gap needs 26 rows; boards run the length, each row takes one 16 ft board, and a 10 % waste allowance brings it to 29 boards plus the linear footage and the deck area. The joists endpoint frames it: joists are spaced along the length, so count = ⌊length ÷ spacing⌋ + 1 — thirteen joists at 16-inch on-center (seventeen at 12-inch for stronger or diagonal decking), each spanning the width, plus two rim joists and a ledger as total framing linear feet. The fasteners endpoint counts the screws: every decking row crosses every joist once and is fastened with two face screws there, so a 16×12 deck takes 26 × 13 × 2 = 676 screws, about 744 with waste — or one hidden clip per intersection. Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, contractor, home-improvement, building-materials and renovation app developers, deck-estimator and takeoff tools, and lumber-yard calculators. Pure local computation — no key, no third-party service, instant. US units (feet/inches). Live, nothing stored. 3 compute endpoints. Rectangular decks; for indoor floor area use a flooring API.

api.oanor.com/deck-api

Picture Framing API

Picture-framing maths as an API, computed locally and deterministically — the mat-cutting and moulding numbers a framer or artist measures a job by. The mat endpoint sizes the mat board around an artwork: the window opening is the art minus a small overlap on each edge (≈ 0.25 inch so the mat holds the print), and the outer mat is the window plus the border widths — give one border or per-side borders, with a heavier bottom for a balanced, bottom-weighted mat, so an 8×10 print with a 2-inch border has a 7.5×9.5 window and an 11.5×13.5 mat. The moulding endpoint computes the frame stick needed: length = inner perimeter + 8 × the moulding width, because each of the four 45-degree mitred corners adds one moulding width — an 11.5×13.5 frame in 1.5-inch moulding needs 62.5 inches, plus any waste allowance. Everything is computed locally and deterministically, so it is instant and private. Ideal for picture-framing, custom-framing, art-gallery and DIY app developers, mat-cutter and moulding-estimating tools, and framing education. Pure local computation — no key, no third-party service, instant. Imperial inches in; lengths in inches and feet. Live, nothing stored. 2 compute endpoints. A planning aid — measure twice, cut once.

api.oanor.com/framing-api

Caulk Coverage API

Caulk and sealant coverage maths as an API, computed locally and deterministically — the linear-feet-per-tube and how-many-tubes numbers a builder, glazier or DIYer buys sealant by. A bead of caulk is essentially a thin cylinder, so the coverage endpoint works out the feet a cartridge lays from the bead width: volume per foot ≈ (π/4 × width²) × 12 inches, and a standard 10.1 fl oz cartridge (18.2 in³) lays about 30 feet of a quarter-inch bead, 13 feet of a fat three-eighths or 55 of a fine three-sixteenths — pass cartridge_oz for sausage packs or 28-oz tubes, and a tube count to total it. The tubes endpoint runs it backwards: cartridges needed = (joint length × a waste factor) ÷ feet per cartridge, rounded up, so a 100-foot run of quarter-inch bead with 10 % waste takes four tubes. Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, glazing, weatherproofing and home-improvement app developers, material-estimator and shopping-list tools, and contractor software. Pure local computation — no key, no third-party service, instant. Inches and feet; estimates — tooling and waste vary. Live, nothing stored. 2 compute endpoints.

api.oanor.com/caulk-api

ADA Ramp API

ADA wheelchair-ramp maths as an API, computed locally and deterministically — the run, landing and slope numbers a builder or accessibility planner sizes a ramp by. The rule the ADA fixes is 1 inch of rise per 12 of run, a maximum 8.33 % slope, so the ramp endpoint turns a rise into the ramp: run = rise × 12 (or × 16 / × 20 for a gentler grade if you have the room), plus the level landings the code requires — a 5-foot landing top and bottom and another between runs whenever the rise exceeds 30 inches — and the total length end to end, so a 24-inch rise needs a 24-foot run and 34 feet overall, while a 36-inch rise breaks into two runs with an intermediate landing for 51 feet. The fit endpoint answers the real-world question: does a ramp for this rise fit the run you have? It returns the minimum run an ADA 1:12 ramp needs, whether your space is enough, and the slope you would actually get if you forced it in — flagging when that exceeds 8.33 % and you need a switchback or a lower rise. Everything is computed locally and deterministically, so it is instant and private. Ideal for construction, accessibility, home-modification and contractor app developers, ramp-estimator and code-check tools, and building software. Pure local computation — no key, no third-party service, instant. Confirm against current ADA and local code. Live, nothing stored. 2 compute endpoints.

api.oanor.com/adaramp-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Lumber Calculator API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Lumber Calculator API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Lumber Calculator API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does Lumber Calculator API cost?

Lumber Calculator API has a free tier with 100 calls / month. Paid plans start at €9.00 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is Lumber Calculator API GDPR-compliant?

All requests to Lumber Calculator API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Lumber 3

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/boardfeet

Board feet

Playground

Parameters

Custom headers

Language: Client:

GET /v1/cost

Lumber cost

Playground

Parameters

Custom headers

Language: Client:

GET /v1/studs

Stud-wall framing

Playground

Parameters

Custom headers

Language: Client:

GET /v1/meta

Spec

Playground

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/lumber-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/lumber-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/lumber-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/lumber-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Lumber Calculator API

API health

Pricing

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Related APIs

Deck Builder API

Picture Framing API

Caulk Coverage API

ADA Ramp API

Frequently asked questions

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