Network

Calculate how much each tunnel or encapsulation layer consumes from your interface MTU, the effective TCP MSS, and the DF ping probe size. For SRE, SD-WAN, and k8s CNI engineers.

Games

Classic minesweeper with beginner, intermediate and expert presets, or custom boards. First click safe, flood-fill, right-click flags, chord on numbers.

Math & Numbers

Look up the molar mass (atomic weight) of several elements at once by symbol, atomic number, or name, as a sortable comparison table.

Data Processing

Paste multiple number combinations and find which numbers repeat across the whole set, with occurrence counts and group positions.

Math & Numbers

Compute linear momentum, mass, or velocity from the other two, with kinetic energy and km/h conversion

Data Analysis

Define input distributions (normal/uniform/lognormal/triangular), write a formula, run thousands of trials, and get the output distribution histogram with confidence intervals.

Data Visualization

Turn an indented list into a mind map with hierarchical branches

Calculator

Estimate how much mulch, gravel, topsoil, river rock, sand or compost a landscaping job needs. Enter the area shape (rectangle, circle, triangle or tapered bed/border), dimensions and depth, then pick a material from the built-in density table (or a custom density). The estimator returns volume (m³ / liters / yd³ / ft³), weight (kg / lb / tonnes), the count of 1 m³ or 1 yd³ bulk bags, small retail bag count, optional cost, plus depth and allowance warnings. Metric and imperial units supported.

Text Processing

Translate text to and from International Morse Code (ITU-R M.1677) with live audio playback. Auto-detects direction, adjustable WPM speed (PARIS standard) and tone frequency.

Text Processing

Mirror text by swapping mirrored symbols (brackets, quotes, arrows, slashes) and reversing the string. Note: Unicode has no mirrored letter glyphs, so letters stay as-is. Plain Unicode text, no font needed.

Validation

Validate or generate numbers using the Modulus-11 (ISO 7064) check-digit algorithm with ISBN-10 (10..2), Norwegian-ID (3,7,6,1,8,9,4,5,2) and generic 2-7 weight schemes.

Validation

Validate OpenAPI 3.0/3.1 and Swagger 2.0 documents structurally: required fields, path/operation completeness, response codes, $ref resolution, operationId uniqueness, and component integrity