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BMI Calculator API vs Open Data NHS Scotland

Same instrument, two spec sheets — measured, not claimed.

APIBMI Calculator APIHEALTHY81Open Data NHS ScotlandHEALTHY80
Uptime · 30d
Uptime · 90d100%90.6%
Uptime · 30d100%71.7%
P50 · ms1212759
P95 · ms25484210
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedOpen Government Licence (per dataset)
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BMI Calculator API vs Open Data NHS Scotland: common questions

Which is more reliable, BMI Calculator API or Open Data NHS Scotland?

On our scheduled checks, BMI Calculator API leads on measured uptime — BMI Calculator API at 100% versus Open Data NHS Scotland at 90.6% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, BMI Calculator API or Open Data NHS Scotland?

Open Data NHS Scotland has the lower median latency in our checks — BMI Calculator API responds in 1212 ms versus Open Data NHS Scotland at 759 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do BMI Calculator API and Open Data NHS Scotland need an API key?

Neither needs a paid key — BMI Calculator API is callable with no signup, and Open Data NHS Scotland is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call BMI Calculator API and Open Data NHS Scotland from the browser?

Only BMI Calculator API is browser-friendly — it returns CORS headers over HTTPS. Open Data NHS Scotland needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are BMI Calculator API and Open Data NHS Scotland free for commercial use?

BMI Calculator API has unclear commercial terms, and Open Data NHS Scotland allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.