ランダム選択ツールとは?
無料のオンライン ランダム選択ツール。カスタムリストからランダムに項目を選択。
Random selection is needed for giveaways, contest winners, classroom activities, team assignments, and unbiased decision making. Random Item Picker selects random items from any list you provide with a visual winner display, pick history, and configurable selection count.
Enter your list of items with one item per line. Items can be names, numbers, words, URLs, or any text. Set how many items to pick (1 to the total number of items). Click Pick Random to see the results. The selected items appear with a visual winner display and ranked numbering.
The pick history logs the last 50 selections with timestamps, providing a transparent record of all picks. This is essential for contest fairness — you can show the complete pick history to verify that winners were selected randomly and without bias.
The selection uses the Fisher-Yates shuffle algorithm with cryptographically random sorting. Every item has an equal probability of being selected. When picking multiple items, each item can be selected only once (sampling without replacement), ensuring unique winners.