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Unusual Units Converter vs TensorFeed

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

APIUnusual Units ConverterUNMONITORED—TensorFeedNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key (static JSON feed endpoints)
Rate limitUnpublished120 req/window · 119 remaining · resets 60
In directory since2026-07-052026-07-05
operationalpartialdownno data

Unusual Units Converter vs TensorFeed: common questions

Which is more reliable, Unusual Units Converter or TensorFeed?

Only TensorFeed is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Unusual Units Converter and TensorFeed need an API key?

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

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

Yes — both Unusual Units Converter and TensorFeed send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Unusual Units Converter and TensorFeed free for commercial use?

Unusual Units Converter has unclear commercial terms, and TensorFeed 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.