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Random Decision Maker

Instant random decisions with custom lists, weighted options, Yes/No, and coin flips. Persistent history and fair weighted randomization.

Updated

What is the Random Decision Maker?

The Random Decision Maker helps you make fast, unbiased decisions—whether choosing dinner, settling group plans, or deciding between options.

Features

  • Custom lists with optional weighting (e.g., "Pizza: 3")
  • Quick modes: Yes/No and Coin Flip
  • Persistent history saved in your browser
  • Fair weighted randomization using proper probability
  • No sign-up required, entries stay on your device

How it works

  1. Choose a mode — Custom List, Yes/No, or Coin Flip.

  2. For Custom List: Enter one option per line. Add weights after a colon (e.g. Pizza: 3) to make popular choices more likely.

  3. Click "Make Decision" — A short visual feedback plays, then the tool instantly picks a fair random result.

  4. Review the result with full context (number of options and timestamp).

  5. History automatically saves your recent decisions locally. Copy results or decide again instantly.

The tool uses a robust weighted random algorithm that ensures fairness even with different weights. Everything runs 100% in your browser — no data is sent to any server.

Examples

Dinner Decision

What should I eat tonight?

Pizza
Sushi
Burger: 3
Salad
Tacos
 
Burger

Quick Yes/No

Should I go out tonight?

Yes

Frequently asked questions

How does the Random Decision Maker ensure fairness?

It uses a proper weighted random algorithm based on probability. Each option’s chance is proportional to its weight (default weight is 1). Even with many options or different weights, the selection is mathematically fair.

Can I use weights to make some options more likely?

Yes! Add a number after a colon on any line, for example: Pizza: 3 or Netflix: 1.5. Higher weights increase the probability.

Is my data saved?

Yes, your options input and decision history are saved in your browser’s localStorage. They persist between visits but are completely private and never sent to any server. You can clear them anytime with the Reset button.

Does it work on mobile?

Yes, the tool is fully responsive and works great on phones and tablets.

What are the quick modes for?

"Yes / No" is perfect for binary decisions. "Coin Flip" gives you Heads or Tails. Both are instant and fun.

Is this tool free?

Completely free with no limits and no account required.

Can I copy the decision result?

Yes, use the "Copy Result" button. It includes the chosen option, number of options, and timestamp for easy sharing.

How many decisions does it remember?

The last 20 decisions are kept in history for convenience. Older ones are automatically removed.

Is the randomization truly random?

Yes, it uses JavaScript’s high-quality Math.random() combined with weighted selection logic that has been carefully tested for fairness.

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