Engineering Calculators
Capacity math for engineers: API rate limits, latency budgets, Kafka message sizes, LLM token costs, self-hosting or an API, story points and DORA metrics.
Tech
14 tools
- API Rate Limit CalculatorA per-client rate limit and burst, with ready-to-paste configs
- System Latency Budget CalculatorSplit a response-time target across your services
1,450 msof a 2,250 ms target
- LLM Token Budget CalculatorMonthly cost of an AI feature across current models
- Kafka Message Size CalculatorMessage, batch, throughput and disk for a Kafka topic
- LLM Self-Hosted vs API CalculatorThe volume where self-hosting an LLM beats the API
- Jira Story Points CalculatorSize a story with the planning-poker scale
- DORA Metrics CalculatorHow your team compares on the four DORA metrics
From Learn
Engineering Calculators
API Rate Limit Calculator
A per-client rate limit and burst, with ready-to-paste configs
Open18 req/sper client: 10 clients, 20% headroom
System Latency Budget Calculator
Split a response-time target across your services
Open1,450 msof a 2,250 ms target
Kafka Message Size Calculator
Message, batch, throughput and disk for a Kafka topic
OpenLLM Token Budget Calculator
Monthly cost of an AI feature across current models
OpenLLM Self-Hosted vs API Calculator
The volume where self-hosting an LLM beats the API
OpenJira Story Points Calculator
Size a story with the planning-poker scale
OpenDORA Metrics Calculator
How your team compares on the four DORA metrics
Open
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