Skip to content
Allin
Sign up · Sign in

Number sequence generator

Generate a list of numbers from a start, end and step.

Related tools

All Web & network tools →
Number base converterConvert numbers between all 35 bases, exactly, with two's complement.Ordinal number converterConvert numbers into English ordinals (1st, 2nd, 3rd…).Pad string / numberPad each line to a fixed length with a chosen character, on the left or right.ASCII code converterConvert text to ASCII/Unicode code points and back.Programming case converterConvert identifiers between camelCase, snake_case, kebab-case, PascalCase and CONSTANT_CASE, one per line. Runs of capitals split correctly: parseHTTPResponse becomes parse_http_response.Column extractorExtract a single column from delimited data (CSV, TSV…). Works on a pasted block or on a file you drop in.Delimiter converterSwap the delimiter of your data — comma, tab, semicolon, pipe or space. Drop a file in rather than pasting it — it is read in your browser and never uploaded.DNS LookupScan a domain on two resolvers at once and see where they disagree.

Number sequence generator is free to use as often as you like, directly from this page. Its place is under Web & network; Number base converter and Ordinal number converter answer the questions closest to this one.

How to use it

  1. Open the tool — no signup or install needed.
  2. Enter your input or adjust the available options.
  3. Get your result instantly, then copy or download it.

Frequently asked questions

What does Number sequence generator do?

Generate a list of numbers from a start, end and step.

When would I actually use this?

Getting usable data out of something that was never meant to be parsed: pulling every address out of a pasted thread, turning a column of lines into a JSON array or an SQL IN clause, renaming a hundred identifiers from snake_case to camelCase in one pass.

What is the most common mistake?

Trusting an extraction to be exhaustive. A pattern that catches every address in the sample will still miss the one wrapped across a line break, the one written with a display name, and the one an email client turned into a link — count what came out against what you expected before you use the list.

How is Number sequence generator different from Number base converter?

They sit next to each other but answer different questions: Number base converter is the one to open when you need it to convert numbers between all 35 bases, exactly, with two's complement. Pick whichever matches what you're starting from — both are free.

Is there a tool for the next step?

Ordinal number converter is the closest one after this: Convert numbers into English ordinals (1st, 2nd, 3rd…).

Where do the figures come from?

Extraction runs on patterns, not on a parser: it recognises the common shapes of an address, a URL or an IP rather than validating them against their specification. That is the right trade for a paste, and the wrong one for input you are about to store.

Further reading

All guides →
ExplainerSemicolon, Tab, Pipe: Choosing a Delimiter That Survives the TripWhy the reader's language decides the delimiter, what the converter does to the quoting when you switch, what the sep= first line really is, and the count of quoted cells on the same export written five ways.ComparisoncamelCase, snake_case, kebab-case: Which One, and Why You Rarely Get to ChooseThe conventions are not taste. A hyphen is the minus operator, so kebab-case cannot be an identifier in most languages - which is exactly why CSS and URLs use it. Plus the acronym round-trip that silently corrupts names, and the rule that fixes it.ExplainerBig O Notation for Beginners: O(1), O(n), O(n squared), and O(log n) ExplainedBig O describes how an algorithm's work grows as input grows. Here is what O(1), O(n), O(n squared), and O(log n) mean and why the difference matters.ExplainerWhat Is UTF-8 and Unicode? Code Points, Byte Encoding, and Why UTF-8 WonUnicode assigns every character a code point; UTF-8 encodes those code points in one to four bytes. Here is how it works and why it beat the alternatives.ExplainerHow Subnet Masks Work: CIDR, Network Bits, and Usable HostsUnderstand how a subnet mask splits an IP address into network and host parts, what /24 means, and how to count usable hosts.How-toHow to Read Binary and Convert It to Decimal and HexLearn how binary place values work and convert binary to decimal and hexadecimal by hand, with clear worked examples.