Random Decimal Generator
About this tool
A random decimal generator produces a random decimal number between a minimum and maximum you choose, with as many decimal places as you set. Pick your range and precision, tap Generate, and get an unpredictable value instantly — ideal for measurements, simulations and probability work.
How to use it
- Set the range (minimum and maximum).
- Choose how many decimal places (1 to 10).
- Tap Generate.
- Copy the result, or generate again.
Decimal vs. whole number
A whole number is a round count with no fractional part — 2, 7 or 40. A decimal carries digits after the point — 0.33, 6.5 or 41.27 — so it can land anywhere between two whole numbers. Choose more decimal places for finer precision, or just one or two for tidy, readable values.
What can you do with it?
- Measurements — generate plausible lengths, weights or temperatures for examples.
- Simulations — feed random inputs into a model or what-if calculation.
- Probability & stats — draw values for demonstrations and exercises.
- Teaching — create fresh decimal practice problems on demand.
How it works
The generator draws a value across your chosen range using your browser's cryptographically secure randomness, then rounds it to the number of decimal places you set. Every result is independent and unbiased, and nothing leaves your device.
Frequently asked questions
- How do I generate a random decimal?
- Set the minimum and maximum, choose how many decimal places, and tap Generate — you get a random value inside the range at your chosen precision.
- How many decimal places can I use?
- From 1 up to 10 decimal places, set however precise you need.
- Can I get a decimal between 0 and 1?
- Yes — that's the default. Leave the range at 0 to 1 for a random fraction, or set any other minimum and maximum, such as 1 to 100.
- What's the difference between a decimal and a whole number?
- A whole number has no fractional part (2, 7, 40); a decimal does (0.33, 6.5, 41.27). Use this tool when you need fractional precision rather than a round count.
- How do I make a random decimal in Excel?
- Use =RAND() for a value between 0 and 1, or =RAND()*(max-min)+min for a custom range, then round with ROUND(). This tool does the same in one tap, with no formula.
- Is the result truly random?
- Yes. Each result uses your browser's cryptographically secure randomness (a CSPRNG), so every value is independent, unbiased and unpredictable.
- Is it free and private?
- Completely free, no sign-up. Everything runs in your browser, so nothing you type is uploaded.