Nerdulator> put something in

Nerdulator

Put something in. Get everything out.

What do you want to nerd out about?

Try one of these

How it works

01

It works out what you gave it

A deterministic parser (regular expressions, lookup tables and range checks) decides whether you typed a number, a date, a measurement, a colour, an address or a word. If it is genuinely ambiguous, you get both readings rather than a silent guess.

02

It calculates everything it can

The matching engine runs every transformation it knows: factors, conversions, encodings, contrast ratios, subnet boundaries, calendar positions. Same input, same output, every time.

03

It links you onward

Every derived value is itself a page. The square of 47, the complement of a colour, the day after a date. All real, all one click away.

14 engines, no models

Nerdulator makes zero AI calls. Every figure on every page is computed at request time from the input you gave it. That is the whole point: a reference site you can check, that gives the same answer twice, and that costs almost nothing to serve.

  • IP & networking

    IPv4 and IPv6 address analysis, CIDR subnet and prefix calculations.

  • Web

    URL and email address structure, parts and encodings. Syntax only, never a network lookup.

  • Developer identifiers

    Cron expressions, UUIDs, semantic versions and checksummed identifiers, decomposed.

  • Reference tables

    Polyhedra, paper sizes, screen resolutions, solar-system bodies and musical pitches.

  • Colour

    HEX, RGB, HSL, HSV and CMYK conversion with contrast, harmonies and named-colour matching.

  • Date

    Calendar position, formats, Unix time and navigation for any date from year 1 to 9999.

  • Units

    Conversion across 17 categories and 184 units, all defined as data.

  • Computing

    Base literals, bit widths, Unix timestamps and Base64.

  • Maths

    Fractions, percentages, ratios, money arithmetic, statistics and expression evaluation.

  • Geometry

    Areas, perimeters, volumes and angles for the common 2D and 3D shapes.

  • Science

    Physical constants, chemical elements, molar masses and physics calculators.

  • Geography

    Country reference data, coordinates, great-circle distance and bearing.

  • Number

    Integer and decimal properties: primality, factors, bases, words, powers.

  • Text

    Character counts, case conversions, encodings, frequency and word-game scores.

What each engine can do →

The nerdy answer to oddly specific questions.