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乱数生成機

Random number generator: create random integers or decimals by range, count and uniqueness with sort and stats for draws, with one-click copy, with one-click copy,.

使い方

最小値、最大値、数量を設定し、重複なし/並べ替えを選択して生成。抽選やサンプリングに最適。

Overview

Random Number Generator is a Generator tool. Create random integers or decimals by range, count and uniqueness with sort and stats for draws, with one-click copy, with one-click copy,. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of Random Number Generator: Set min, max and count; optionally unique and sorted. Great for giveaways and sampling. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use Random Number Generator offline or on poor network — all calculations stay local and private.
  • Generate strong passwords
  • Mock data for testing

How to use

  1. 1 Set min, max and count; optionally unique and sorted. Great for giveaways and sampling..
  2. 2 Set length/charset rules
  3. 3 Preview and lock/exclude items
  4. 4 Copy or export CSV/TXT

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Uses Crypto API
  • Batch export in chunks for thousands
  • Mock data for testing only

FAQ

Reproducible?
Fix seed or export log if needed.
How random?
crypto.getRandomValues with system entropy.
How is Random Number Generator different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “random number” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
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すべての計算はブラウザ内で実行され、データはアップロードされません。