ITIS vs Unusual Units Converter
Same instrument, two spec sheets — measured, not claimed.
ITIS vs Unusual Units Converter: common questions
Which is more reliable, ITIS or Unusual Units Converter?
On our scheduled checks, Unusual Units Converter leads on measured uptime — ITIS at 97.1% versus Unusual Units Converter at 100% 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, ITIS or Unusual Units Converter?
Unusual Units Converter has the lower median latency in our checks — ITIS responds in 1767 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 ITIS and Unusual Units Converter need an API key?
Neither needs a paid key — ITIS 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 ITIS and Unusual Units Converter from the browser?
Only Unusual Units Converter is browser-friendly — it returns CORS headers over HTTPS. ITIS needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are ITIS and Unusual Units Converter free for commercial use?
ITIS 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.