Random Number Generator
Generate random integers or decimal numbers within a range. Choose how many values to create, avoid duplicates and sort your results.
Random Number Generator
Configure the numeric range and generation options.
Number Range
The maximum must be greater than or equal to the minimum.
Choose between 0 and 12 digits after the decimal point.
Generate between 1 and 10,000 values at a time.
Sorting changes only the display order after generation.
Current Configuration
Minimum
1
Maximum
100
Type
Integer
Quantity
1
Unique Values
Off
Possible Values
100
Generated Numbers
Generate values using the configuration beside this panel.
Ctrl/Cmd + Enter can also generate a new set.
Random Result
Ready to Generate
Configure the generator, then use the button directly above. Your numbers will appear in this same panel.
Result Statistics
Summary values calculated from the most recently generated set.
Generated
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Lowest
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Highest
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Average
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How the Random Number Generator Works
Set the Range
Choose the lowest and highest values that may be generated.
Configure the Output
Choose integers or decimals, quantity, uniqueness and result order.
Generate
The results appear directly below the Generate button in the results panel.
Integer Mode Includes Both Boundaries
When generating integers, both the minimum and maximum whole numbers are eligible for selection.
A range from 1 to 100 therefore contains exactly 100 possible integer values.
Decimal Generation Uses Fixed Precision
Decimal values are generated according to the number of decimal places you select.
For example, the range 0.00 to 1.00 at two decimal places contains 101 representable values, including both 0.00 and 1.00.
Unique Values Must Fit Inside the Range
Unique mode prevents a generated value from appearing more than once in the same result set.
If you request ten unique integers from the range 1 to 5, generation cannot succeed because only five distinct integers exist.
Sorting Does Not Change the Random Draw
Ascending and descending modes sort values only after they have been generated.
The selected numbers are generated first, so choosing a sort order does not change which values are eligible.
Random Number Examples
1 to 100
Generate one ordinary random integer between 1 and 100.
5 Unique Numbers
Generate five different integers from a larger range.
Decimal Values
Generate values such as 0.42, 3.75 or 9.10.
Negative Range
Generate numbers entirely below zero or across zero.
Popular Uses
Games
Generate random scores, positions, challenges or game values.
Classroom Activities
Select random questions, numbers, page references or exercise values.
Test Data
Create quick numeric values for development, spreadsheets or demonstrations.
Informal Draws
Generate random ticket or participant numbers for low-stakes activities.
Simulations
Produce repeated random values for simple experiments and demonstrations.
Everyday Decisions
Choose a number when you simply need an unbiased numeric selection.
Private Browser-Based Number Generation
Random number generation happens directly inside your browser during normal use.
- Your configured range does not need to be sent to SwiftVecto.
- Generated values are created locally in the browser.
- No file upload is required.
- No account is required.
General Randomization, Not Certified Lottery Software
This generator is suitable for everyday choices, education, games, testing and informal randomization.
It should not replace independently audited systems where regulated gambling, formal lotteries, cryptographic keys or legally controlled draws require certified procedures.
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How to Use the Random Number Generator
Choose a minimum and maximum, then generate one or more random integers or decimals. You can request distinct values and arrange the results in ascending or descending order.
Overview
SwiftVecto’s Random Number Generator helps you pick numbers for classroom exercises, games, sample data and everyday tasks. Set a range, select integer or decimal output, and choose how many results you need. Generation takes place in your browser. Unique mode prevents repeated values within a single generated set, provided the range contains enough possible values.
Benefits
How It Works
The minimum and maximum define the permitted numeric range.
Integer mode uses whole numbers within that range; a range without any integers cannot produce integer results.
Decimal mode uses the selected number of decimal places to control the output precision.
Unique mode requires enough distinct possible results for the requested quantity.
Sorting rearranges the generated values after selection; it does not change the selected set.
How to Use This Tool
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1Enter the minimum and maximum values.
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2Choose Integer or Decimal and set the quantity.
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3For decimals, select the number of decimal places.
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4Optionally enable Unique Values and choose a sort order.
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5Select Generate Numbers, then review or copy your results.
Helpful Tips
- For five different whole numbers between 1 and 10, use Integer, quantity 5 and Unique Values.
- The range 1 to 10 contains ten possible integers, so you cannot request eleven unique integers from it.
- Unique Values applies to one generated set, not to numbers produced in earlier runs.
- Decimal precision limits how many distinct results can be represented in a small range.
- Choose Random order when the original generated sequence matters.
Common Uses
Pick a number between 1 and 100.
Create five distinct integers for a classroom exercise.
Generate decimal sample values between 0 and 1.
Produce a sorted list of random negative numbers.
Worked Examples
The following examples demonstrate how this tool can be used in realistic scenarios.
Pick a Number from 1 to 100
Set Minimum to 1, Maximum to 100, Number Type to Integer and Quantity to 1. Generate to pick one whole number in that range.
Generate Five Different Numbers
Set Minimum to 1, Maximum to 50, Quantity to 5 and enable Unique Values. Select Integer to produce five distinct whole numbers.
Create Decimal Test Values
Set Minimum to 0, Maximum to 1, Number Type to Decimal, Decimal Places to 3 and Quantity to 10. Generate a list of values at the chosen precision.
Common Mistakes
Avoid these common mistakes to achieve the most accurate results.
- Setting the maximum below the minimum.
- Requesting more unique values than the range can contain.
- Choosing Integer for a range that contains no whole numbers.
- Assuming Unique Values prevents repeats across separate generations.
- Using general-purpose random output as a cryptographic secret or certified draw.
Glossary
Definitions of the most important terms used by this tool.
Integer
A whole number, such as -2, 0 or 15.
Decimal Places
The number of digits after the decimal point in a displayed value.
Unique Values
A setting that prevents a value from appearing twice within the same generated set.
Frequently Asked Questions
Can I generate a number between 1 and 100?
Yes. Enter 1 as the minimum, 100 as the maximum, select Integer and set the quantity to 1.
Can I generate several numbers at once?
Yes. Set the quantity to the number of results you need, up to 10,000.
Can I prevent duplicate numbers?
Yes. Enable Unique Values. The requested quantity must not exceed the number of distinct values available in your range.
Can I generate negative numbers or decimals?
Yes. Negative ranges are supported, and Decimal mode lets you choose a precision of up to 12 decimal places.
Does sorting affect the random selection?
No. Sorting changes the order in which the generated numbers are displayed.
Are both endpoints included?
Integer mode uses the whole numbers between the specified minimum and maximum, including whole-number endpoints. Decimal results are constrained by the range and chosen precision.
Can I use these numbers for passwords or official lottery draws?
This general-purpose tool is intended for everyday use, education and testing. Do not use it as a substitute for cryptographic key generation or a certified draw system.
Things to Know
- Numbers are generated in your browser; no file upload is needed.
- Unique mode applies only to the current generated set.
- If the chosen range cannot supply enough distinct values, adjust the range, quantity or precision.
Disclaimer
Random output is provided for everyday, educational and testing purposes.
Do not rely on this tool for cryptographic secrets, regulated gambling or independently audited drawings.
Decimal precision can limit the number of distinct possible results.