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ConvertHub API vs SLA Uptime Calculator

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

APIConvertHub APINEW—SLA Uptime CalculatorNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ConvertHub API vs SLA Uptime Calculator: common questions

Which is more reliable, ConvertHub API or SLA Uptime Calculator?

On our scheduled checks, SLA Uptime Calculator leads on measured uptime — ConvertHub API at —% versus SLA Uptime Calculator 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 ConvertHub API and SLA Uptime Calculator need an API key?

SLA Uptime Calculator needs no key, while ConvertHub API requires a free API key. If you want to start calling without signup, reach for SLA Uptime Calculator first.

Can I call ConvertHub API and SLA Uptime Calculator from the browser?

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

Are ConvertHub API and SLA Uptime Calculator free for commercial use?

ConvertHub API has unclear commercial terms, and SLA Uptime Calculator 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.