Napkin Math

What it can do

• Estimate system storage costs

  Data volume and storage requirements → Cost calculations and estimates

• Calculate system throughput expectations

  System specifications and performance parameters → Throughput estimates and benchmarks

• Estimate system latency

  Network and processing parameters → Latency predictions and timing estimates

• Perform back-of-the-envelope calculations for system design

  System requirements and constraints → Quick performance estimates and design recommendations

• Provide performance benchmarks

  System components or operations → Current performance numbers and metrics

• Generate practice problems for system estimation

  User request or newsletter subscription → Performance estimation exercises and scenarios

Why it made the leaderboard

Reference performance numbers, benchmarks, and estimation techniques for back-of-the-envelope system design — sanity-check storage costs, throughput, and latency from first principles before you build.

Intel on Napkin Math

• The f-sync mystery: why MySQL writes more than napkin math predictsAug 11, 2026
• Napkin math: using first-principles estimates to catch bad benchmarksAug 11, 2026
• Pushing software engineering limits with “napkin math”Jul 21, 2026

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