Free Tools
Calculators for SRE & Observability Teams
Metric Cardinality Calculator
See how labels multiply into time series, and why adding a tenant or customer ID can turn a reasonable bill into an unreasonable one.
- Possible series per metric
- 192,000
- Estimated active series
- 960,000
Tools that bill per series or per custom metric charge for each active series. In a columnar store such as ClickHouse, the same labels cost only the bytes they add to each stored row.
SLO Error Budget Calculator
Turn an SLO into minutes of allowed downtime, and see how fast the current error rate is burning through it.
- Error budget
- 43.2 min
- Allowed error rate
- 0.1%
- Current burn rate
- 5×
- Budget gone in
- 144 h
A burn rate of 1× uses the budget exactly over the window. A common alerting pattern pages at 14.4× over one hour and opens a ticket at 6× over six hours.
Telemetry Storage Estimator
Estimate raw ingest and compressed storage for logs or spans before you size a ClickHouse cluster.
- Raw ingest per day
- 2,592 GB
- Raw ingest per month
- 77.76 TB
- Stored after compression
- 3.63 TB
Compression depends on your data. Columnar storage of logs and spans commonly reaches 5–15×; measure yours with a day of real traffic before sizing disks. Add headroom for replication and merges.
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