About Nzynxo
Free, fast reliability and developer calculators — no login, no uploads.
What this site is
Nzynxo is a small collection of free calculators for SLA/uptime math, SRE error budgets, and everyday developer tasks (JSON formatting, hashing, encoding, date math). Every tool on this site runs entirely in your browser using JavaScript — there's no backend, no account, and no data is collected about the values you enter.
Why it exists
These are calculations engineers look up constantly — "how much downtime does 99.9% allow," "what's my actual uptime," "what's this string in Base64" — but most existing calculators are cluttered with ads or require signup. This site aims to be the fast, clean version.
How it's funded
The site is supported by affiliate links to monitoring and developer tools we think are genuinely useful (see our Privacy Policy and disclosure on relevant pages). It may eventually carry display advertising. Neither changes what the tools calculate or how they work.
Related
If you're managing infrastructure at scale, Zyntra is worth a look — an agentless infrastructure operations platform covering Linux, Windows, Kubernetes, databases, networks and cloud.
Get in touch
Questions, bug reports, or a tool you'd like to see? See the Contact page.