Free Tools

Tools for operators.

13 free, no-signup tools for SREs and DevOps engineers. Calculate SLAs, generate cron expressions, decode HTTP status codes, and more.

Monitoring 5

Uptime SLA Calculator

Calculate exact downtime for any SLA percentage

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Downtime Cost Calculator

Estimate the cost of downtime per minute

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HTTP Status Codes

Searchable reference with fixes

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SSL Certificate Checker

Check certificate validity and expiry

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Latency Percentile Calculator

Calculate P50, P90, P95, P99 from data

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Kubernetes 3

K8s Cost Estimator

Estimate monthly cluster costs

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Container Size Calculator

Right-size CPU and memory limits

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Error Budget Calculator

Calculate SLO error budget burn rate

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DevOps 5

Cron Expression Generator

Visual cron builder with explanations

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YAML Validator

Validate and convert YAML/JSON

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Regex Tester

Test patterns with log presets

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Postmortem Template

Generate incident reports

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On-Call Rotation Generator

Create fair on-call schedules

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Beyond Tools

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