Integer Range Generator

Integer Range Generator

Create a list of consecutive whole numbers in seconds. Enter a start and an end value, choose a step, and the tool generates the sequence immediately – 1 to 100, 0 to 1000 in steps of 50, or a countdown from 10 to 1. Copy the result or download it as a text file.

Options

• Start and End – both values are included. If the end is smaller than the start, the list counts down.
• Step – the gap between numbers. A step of 2 from 1 gives odd numbers, from 0 gives even numbers. The last number is included only if the step lands on it exactly.
• Separator – new lines, commas, comma + space, spaces, tabs, semicolons, or pipes.
• Prefix and suffix – wrap every number with text, for example ID- and .jpg for ID-001.jpg, ID-002.jpg, …
• Zero-pad – pad all numbers to the same width (001 … 100), which keeps file names in the correct order when sorted alphabetically.
• Shuffle order – output the same numbers in random order, e.g. to assign seats, draw tickets, or randomise a test sequence. Click Shuffle Again for a new order.

What people use number ranges for

• Filling a spreadsheet column or database table with sequential IDs.
• Generating file names, URLs, or SKU lists: page-1.html … page-50.html.
• Test data for unit tests and load tests.
• Raffle and lottery tickets, bingo numbers, or seat numbers – shuffled or in order.
• Creating IN (...) lists for SQL queries or arrays for JavaScript and Python code.

Limits

Numbers can be negative and as large as JavaScript's safe integer range (±9,007,199,254,740,991). One run produces up to 100,000 numbers so your browser stays responsive; use a larger step or split big ranges into several runs.

For random numbers instead of a sequence, see the random generators in the Random category; to sort an existing list, use the Number Sorter.