Random Number Generator

How to use the Random Number Generator

1. Choose the type
   In Type, pick Integer (whole numbers like 1, 2, 3) or Decimal (numbers with decimal places).
2. Set your range
   Enter a Min and Max value. The tool generates numbers from Min to Max.
   Example: Min = 1, Max = 100 for a simple 1–100 number picker.
3. Choose how many results
   In Count, enter how many random numbers you want (1 to 10,000).
4. (Optional) Decimal places
   If you selected Decimal, set Decimal places (0–10) to control precision (e.g., 2 for money-style 2dp).
5. (Optional) No duplicates
   Tick No duplicates to ensure every result is unique. Tip: Your range must fit the count. For example, to get 50 unique integers, you need at least a 50-number range (e.g., 1–50).
6. (Optional) Set a seed
   Enter a word or code in Seed (e.g., exam-2025) to get repeatable results for the same settings. Great for tests, fair draws, or sharing exact runs with others.
7. Generate and copy
   Click Generate to produce the numbers. Use Copy to place them on your clipboard. Use Clear to reset.

Quick presets you can follow

• Pick a number 1–100: Type = Integer · Min = 1 · Max = 100 · Count = 1
• Lottery-style picks (unique): Integer · Min = 1 · Max = 49 · Count = 6 · No duplicates ✓
• Dice roll: Integer · Min = 1 · Max = 6 · Count = 1
• Multiple dice (no repeats): Integer · Min = 1 · Max = 6 · Count = 3 · No duplicates ✓
• Random price points: Decimal · Min = 5 · Max = 25 · Count = 10 · Decimals = 2
• Seeded classroom draw: Integer · Min = 1 · Max = 30 · Count = 5 · Seed = class-A

Best practices

• Plan your range: Set realistic Min/Max to match your use case (raffles, teams, quizzes, sampling).
• Use No duplicates for fair draws: Ensures each winner/value appears only once.
• Use a seed for repeatability: Same seed + same settings = same output (useful for verifying results).
• Decimals for measurements: Choose suitable decimal places (2–3 dp for prices/weights; more for science).

Troubleshooting

• “Enter a valid range” → Make sure Max ≥ Min and both are numbers.
• “Range too small for unique integers” → Increase the range or reduce the count when No duplicates is ticked.
• Unexpected repeats? Untick No duplicates or widen the range.
• Need to reproduce a past run? Re-enter the same seed and inputs.

Popular uses

• Number picker for giveaways, raffles, classroom questions.
• Teams maker by assigning random IDs to participants.
• Simulations & sampling with decimals for experiments.
• Practice tests with seeded runs for consistent sets.

Tip: Save your favourite settings (Min, Max, Count, Seed) so you can recreate the same list in seconds.