Random Number Generator — 5 Modes incl. Dice & Coin Flip
Generate cryptographically secure random results in 5 modes — integers, decimals, dice roller with animated SVG faces, coin flip simulator, and pick-from-list with Fisher-Yates shuffle. Powered by the Web Crypto API. 100% client-side, no data leaves your browser.
Settings
Cryptographically Secure
Uses crypto.getRandomValues() for true randomness, not Math.random().
Visual Dice & Coins
See actual dice faces and coin sides with roll/flip animations.
100% Private
All generation happens in your browser. Nothing is sent to any server.
Included Random Generator Tools
Integer Generator
Set a min, max, and count (up to 100) to generate a batch of cryptographically secure random integers. Includes sum and average statistics.
Decimal Generator
Generate random decimal numbers with a configurable range and precision (1–10 decimal places). Useful for simulations and statistical sampling.
Dice Roller
Roll up to 30 dice with 2–20 sides each. Each die face renders an SVG dot-pattern with a 3D CSS roll animation. Shows sum, average, min, and max.
Coin Flip
Flip up to 30 coins simultaneously with a CSS flip animation and visual gold/purple coin faces. Displays heads/tails counts and percentages.
Pick from List
Paste any list of items (one per line) and pick a random sample. Supports allow-duplicates mode and uses a Fisher-Yates shuffle for fairness.
How to Use the Random Generator
Choose a mode
Select Integer, Decimal, Dice, Coin Flip, or Pick from List from the tab bar at the top.
Configure options
Set the range, count, number of dice/sides, or paste your custom list depending on the mode.
Click Generate
Hit the Generate button to get instant cryptographically secure results using your browser's crypto.getRandomValues() API.
Use the results
Read the results, check the statistics (sum, average, etc.), or re-roll for a fresh set.
Frequently Asked Questions
- Is this random number generator truly random?
- It uses the Web Crypto API (crypto.getRandomValues()) which is a cryptographically secure pseudo-random number generator (CSPRNG) — the same standard used for cryptographic key generation. All generation is done client-side in your browser.
- How many modes does the random number generator have?
- ToolMint's Random Number Generator has 5 modes: Integer Generator, Decimal Generator, Dice Roller (up to 30 dice, 2–20 sides), Coin Flip (up to 30 coins with animation), and Pick from List (Fisher-Yates shuffle).
- How does the Dice Roller work?
- Choose the number of dice (1–30) and the number of sides per die (2–20). Each die renders with an SVG dot pattern like a physical die and plays a 3D CSS roll animation. Sum, average, min, and max are displayed after every roll.
- What is Pick from List and how is it shuffled?
- Paste a list of items (one per line) — names, options, or any text. Set how many to pick and whether duplicates are allowed. The picker uses the Fisher-Yates (Knuth) shuffle algorithm with crypto.getRandomValues() for an unbiased selection.
- Can I generate random decimals with high precision?
- Yes. In Decimal mode, set the number of decimal places from 1 to 10. You can also generate a batch of up to 100 decimal values at once.