Integer random number generator with preset-ready ranges
Produce unbiased integers for raffles, stand-up rotations, and classroom picks. Configure ranges, uniqueness, and batch size without friction.
Tune the integer generator to your exact range
Adjust minimums, maximums, quantity, and duplicate policy. Switch to decimal mode only when you need fractions.
- Set integer-only ranges with precise min and max values
- Guarantee uniqueness by disabling duplicates
- Generate single picks or large batches effortlessly
- Persist every batch in history for quick replays
ランダム抽選を設定する
タスクに適した範囲、数量、フォーマット、ランダム性ソースを設定します。
重複する番号を許可する
固有の結果を保証するためにオフにします。重複することなく、より大きな範囲が必要です。
ランダム性源
高速数学を選択します。ランダムまたは安全な暗号エントロピー。
Trusted draws
Toggle duplicate protection to guarantee every integer is used only once when fairness matters.
Batch friendly
Spin up to 1,000 integers per run, perfect for brackets, ticket assignments, or randomized checklists.
Audit ready
Use the history panel and CSV/TXT exports to document each draw for compliance reviews.
Quick range recipes
Use these popular configurations to cover the most requested integer draws in seconds.
1–30 roster picker
Set min = 1, max = 30, quantity = 1. Disable duplicates to ensure every student is called exactly once per session.
Ticket blocks
Match your ticket numbers, e.g. min = 1000, max = 1999, quantity = 5, duplicates allowed for multiple winners per tier.
Stand-up order
Keep the team rotation fresh: min = 1, max = team size, quantity = team size, duplicates off for a unique order.
Where integer draws shine
From classrooms to QA sprints, these scenarios rely on quick, transparent integer generation.
Classroom demonstrations
Pair students randomly, pick quiz questions, or allocate lab stations without bias.
Gaming and simulations
Prototype tabletop encounters, randomize enemy spawns, or assign loot tables in seconds.
Operations and logistics
Shuffle inspection checklists, assign review order, or balance workloads with traceable randomness.
Best practices for dependable results
Follow these guardrails to keep every integer draw fair, reproducible, and defensible.
- Record your chosen range, quantity, and duplicate policy before each draw
- Use secure mode for draws that need cryptographic-grade entropy
- Export CSV logs when multiple stakeholders must review the outcome
- Reset history after finalizing a session to avoid mixing contexts
Need more than whole numbers?
Explore our lottery presets or deep dive into true randomness to cover advanced workflows.
Integer generator FAQ
Can I lock the generator to integers only?
Yes. The tool defaults to integer mode. Keep the format selector on “Whole numbers (integers)” and every batch returns whole numbers.
How do I guarantee every integer is unique?
Turn off the “Allow duplicate numbers” toggle. The generator checks your range size and retries automatically until the batch is unique.
What if I need recurring draws with the same settings?
Save the exported CSV or TXT file and reference the history panel. Both capture the range, quantity, and entropy mode so you can repeat or audit the draw.
Why am I seeing a warning about the range?
The warning appears when the requested quantity is larger than the number of unique integers available between your minimum and maximum. Expand the range or enable duplicates to proceed.
Can I create sequential batches without overlaps?
Yes. After exporting a batch, adjust the min and max to the remaining pool or keep a running list in your spreadsheet and cross off used numbers.
How do I share results with a team?
Use the copy button for quick chat updates or download the CSV file for longer audits. Files include timestamps so everyone knows when the draw happened.
Does secure mode change the integer output?
Secure mode only changes the entropy source. The distribution of integers stays the same, but results become resistant to predictable patterns.
Can I preset popular ranges like 1–100?
Set your preferred min and max, then bookmark the page or save a browser preset. The generator remembers your last configuration per session.
How do I prevent leading zeros when exporting?
CSV and TXT exports store plain numbers without formatting. If spreadsheet software adds zeros, change the column format to “Number” or “General.”
What’s the fastest way to switch to decimals when needed?
Use the format selector at the top of the tool. Switching to decimals unlocks fractional precision, and toggling back returns you to integer-only draws.