// tools
DevOps utilities and calculators
Free, fast, browser-only DevOps tools. No sign-up, no data sent anywhere. Built to replace the half-broken, ad-infested ones that rank for these queries.
CIDR Calculator
CIDR subnet calculator: parse a CIDR block to get network range, subnet mask, broadcast address, usable IPs, and check whether an IP belongs to the network.
JWT Decoder
JWT decoder that parses the header, payload, and signature in your browser. Shows human-readable expiry and issued-at, with no token sent to any server.
Base64 / URL
Encode or decode base64 and URL-safe strings. Handy for secrets, Kubernetes manifests, and API debugging.
UUID / Secret
Generate UUIDs (v4, v7), random hex tokens, and base64 secrets suitable for Kubernetes secrets or API keys.
Cron Parser
Cron expression parser that translates schedules into plain English and previews the next 5 run times in your local timezone. Validates 5 and 6-field syntax.
K8s Resources
Size CPU and memory requests / limits for a Pod based on workload characteristics, replicas, and headroom.
YAML / JSON
Paste YAML or JSON to validate, pretty-print, and convert between the two. Runs entirely in your browser.
Looking for third-party tools?
The calculators above are things we built. For curated links to external DevOps tools, see the DevOps Toolbox.
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