Area a bag covers
API · /fertilizer-api
Fertilizer Calculator API
healthy
4,512 Subscribers
Fertilizer maths as an API, computed locally and deterministically. The rate endpoint works out how much fertilizer product to apply to hit a target nitrogen rate over an area: from the N-P-K analysis (such as 10-10-10 or 20-5-10), a target pounds of nitrogen per 1000 ft² (or per 100 m²) and the area, it returns the product weight and the pounds of nitrogen, phosphate and potash applied. The nutrients endpoint reports the pounds of nitrogen, P₂O₅ and K₂O — and the elemental phosphorus and potassium — in a bag of a given weight and analysis. The coverage endpoint works out how much area a bag covers at a target nitrogen rate. N-P-K are percent by weight; phosphorus is reported as P₂O₅ and potassium as K₂O following the label convention, with the elemental amounts alongside (P₂O₅ × 0.4364, K₂O × 0.8301). Everything is computed locally and deterministically, so it is instant and private. Ideal for lawn-care and gardening apps, agriculture and turf tools, and landscaping and quoting software. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is fertilizer rate maths; for mulch, gravel and topsoil quantities use a landscaping API.
api.oanor.com/fertilizer-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 77 ms
- Server probes · 24h
- Subscribers
- 4,512
- active
- Total calls
- 80
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 12,335 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 12,335 calls/month
- 2 req/sec
- Rate + nutrients + coverage
- No credit card
Starter
€13.85 /month
- 21,950 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 21.95k calls/month
- 8 req/sec
- Metric & imperial basis
- Email support
Pro
€33.75 /month
- 269,500 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 269.5k calls/month
- 20 req/sec
- Lawn / agriculture pipelines
- Priority support
Mega
€71.75 /month
- 1,390,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 1.39M calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Built by
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api.oanor.com/aquascape-api
Commodities API
Live commodity futures prices as an API — the energy, grain, soft and livestock commodity complex, served from Yahoo Finance. For any commodity it returns the front-month futures price, the previous close, the absolute and percentage change on the day, the day's high and low and the 52-week high and low, with the price's currency and quoting unit (e.g. USD per barrel, US cents per bushel). Look a commodity up by name or alias (crude oil, Brent, natural gas, gasoline, corn, wheat, soybeans, coffee, sugar, cocoa, cotton, orange juice, live cattle, lean hogs and more), pull a category board (energy, grains, softs, livestock) ranked by the day's move, or get the whole board in one call. The commodity-quote layer for trading, markets and dashboard apps. Live, no key. Distinct from the precious-metals API — this is the energy, agricultural and soft-commodity complex.
api.oanor.com/commodities-api
Hay Bale Weight API
Hay and forage bale maths as an API, computed locally and deterministically — the weight, dry-matter and feed-supply numbers a rancher, hay producer or livestock manager plans winter feed with. The round-bale endpoint gives the weight from the cylinder volume (π·r²·width) × the dry-matter density (typically ~9–12 lb/ft³ for cured hay), so a 5×5 ft bale runs about 1,000 lb, and reports the dry-matter weight (≈88 % of as-fed) that actually feeds the animals — buy and ration on dry matter, not gate weight. The square-bale endpoint gives the weight of a rectangular bale from its length, width and height (÷ 1,728 for cubic feet from inches) × the density — a typical 14×18×36-inch small square is about 50 lb, big 3×3 or 4×4 ft bales hundreds — with a reminder that high moisture both adds weight and risks mould and barn-fire heating. The feed-supply endpoint sizes the stack: feed needed = head × daily intake × days (cattle eat ~2–2.5 % of bodyweight, about 25–30 lb of dry matter for a beef cow), and bales = that ÷ the bale weight, so 30 cows for 120 days at 30 lb is about 108 thousand-pound bales — add 10–20 % for feeding waste. Everything is computed locally and deterministically, so it is instant and private. Ideal for ranch- and farm-management tools, hay-trading and livestock apps, and ag calculators. Pure local computation — no key, no third-party service, instant. US units; densities are estimates. 3 compute endpoints. For grain storage use a grain-bin API; for rotational grazing a grazing API.
api.oanor.com/baleweight-api
Seeding Rate API
Planting seed-rate maths as an API, computed locally and deterministically — the plant-population, seed-spacing and seeding-rate numbers a farmer, agronomist or precision-ag tool sets a planter or drill to. The population endpoint gives the plants per acre = 6,272,640 ÷ (row spacing × in-row seed spacing) in inches (the 6,272,640 is the square inches in an acre), so 30-inch rows with seeds 6 inches apart give about 34,800 plants per acre — closer spacing raises the population and the competition. The seed-spacing endpoint runs it the other way: the in-row spacing for a target population = 6,272,640 ÷ (target plants × row spacing), so 35,000 plants per acre in 30-inch rows means a seed about every 6 inches, the value to set on a singulating meter or seed-rate drive. The seeding-rate endpoint gives the pounds of seed per acre = the target population ÷ the germination rate ÷ the seeds per pound, over-seeding for the seeds that never come up — 35,000 plants of a 1,500-seeds-per-lb crop at 95 % germination needs about 24.6 lb/acre, working from the seed lot's own tag. Everything is computed locally and deterministically, so it is instant and private. Ideal for precision-ag and farm-management tools, planter-calibration and agronomy apps, and seed-retail utilities. Pure local computation — no key, no third-party service, instant. US units. 3 compute endpoints. For sprayer rates use a spray API; for fertiliser a fertilizer API.
api.oanor.com/seedrate-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Fertilizer Calculator API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Fertilizer Calculator API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Fertilizer 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 Fertilizer Calculator API cost?
Fertilizer Calculator API has a free tier with 100 calls / month. Paid plans start at €13.85 / 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 Fertilizer Calculator API GDPR-compliant?
All requests to Fertilizer 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.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/fertilizer-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/fertilizer-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/fertilizer-api/SOME_PATH");
curl_setopt($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/fertilizer-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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