JPL Close Approach vs Unusual Units Converter
Same instrument, two spec sheets — measured, not claimed.
JPL Close Approach vs Unusual Units Converter: common questions
Which is more reliable, JPL Close Approach or Unusual Units Converter?
On our scheduled checks, Unusual Units Converter leads on measured uptime — JPL Close Approach at —% versus Unusual Units Converter at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do JPL Close Approach and Unusual Units Converter need an API key?
Neither needs a paid key — JPL Close Approach 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 JPL Close Approach and Unusual Units Converter from the browser?
Only Unusual Units Converter is browser-friendly — it returns CORS headers over HTTPS. JPL Close Approach needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are JPL Close Approach and Unusual Units Converter free for commercial use?
JPL Close Approach 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.