Noctua vs Unusual Units Converter

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

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms742103
P95 · ms2037218
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Noctua vs Unusual Units Converter: common questions

Which is more reliable, Noctua or Unusual Units Converter?

Both are neck-and-neck — Noctua and Unusual Units Converter each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Noctua or Unusual Units Converter?

Unusual Units Converter has the lower median latency in our checks — Noctua responds in 742 ms versus Unusual Units Converter at 103 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 Noctua and Unusual Units Converter need an API key?

Neither needs a paid key — Noctua is callable with no signup, and Unusual Units Converter is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Noctua and Unusual Units Converter from the browser?

Only Unusual Units Converter is browser-friendly — it returns CORS headers over HTTPS. Noctua needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Noctua and Unusual Units Converter free for commercial use?

Noctua has unclear commercial terms, and Unusual Units Converter has unclear commercial terms. 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.