Observability & SRE
Observability & SRE Tools
PromQL syntax validators, log volume cost estimators, metrics cardinality calculators, and OpenTelemetry attribute references that run entirely in your browser.
🔒 Browser-only — no data sent
⚡ Zero account required
📦 13 free tools
metrics
PromQL Validator→
Validate PromQL query syntax before hitting your Prometheus instance.
logging
Log Volume Cost Estimator→
Estimate monthly log ingestion and retention costs across Datadog, New Relic, Grafana Cloud, and Better Stack.
metrics
Metrics Cardinality Estimator→
Calculate time series cardinality from label dimensions before hitting Prometheus limits.
opentelemetry
OpenTelemetry Attribute Reference→
Search OpenTelemetry semantic convention attribute names for HTTP, database, messaging, and RPC spans.
alerting
Alert Fatigue Calculator→
Quantify on-call alert fatigue and identify actionable improvement levers.
tracing
Distributed Trace Storage Calculator→
Calculate distributed tracing storage costs from span rate, size, and sampling strategy.
slo
SLO Error Budget Burndown→
Calculate error budget remaining, burn rate, and time to exhaustion for any SLO window.
logging
Log Sampling Rate Calculator→
Calculate the optimal log sampling rate to hit a cost target while preserving error signal.
metrics
Dashboard Query Cost Estimator→
Estimate Grafana Cloud and Datadog query costs from dashboard panel count and refresh rate.
oncall
On-Call Rotation Calculator→
Calculate per-engineer on-call burden, fairness score, and burnout risk from rotation parameters.
logging
Log Retention Sizing Calculator→
Size log retention storage from daily ingest rate, retention days, replication factor, and index overhead. Browser-on...
metrics
Queue Backlog Growth Calculator→
Compute drain time and growth rate from current queue depth, arrival rate, processing rate, and measurement window. B...
metrics
Synthetic Check Sizing Calculator→
Size a synthetic monitoring fleet from endpoint count, check interval, regions, and retries. Browser-only — no data s...