Which categories and units are supported?

Length (meter, kilometer, centimeter, millimeter, mile, yard, foot, inch), weight (kilogram, gram, milligram, pound, ounce, ton), volume (liter, milliliter, gallon, quart, pint, cup, fluid ounce), and area (square meter, square kilometer, hectare, acre, square foot, square inch).

How precise are the conversions?

Conversions use the standard SI-based factors (NIST SP 811) so results are exact at the IEEE 754 double-precision limit. The displayed decimals are tunable so you can pick the precision you need.

Can I convert between metric and imperial?

Yes. Every category includes both metric and imperial units, and conversion is bidirectional — you can enter a value in either unit and read the equivalent in any other.

Is anything uploaded or stored?

No. All conversion is done locally in your browser; your values are not transmitted or persisted.

Unit Converter

Length, weight, volume and area — metric ↔ imperial

Conversion

About

Convert between metric and imperial units for length, weight, volume, and area. Enter a value, pick the source and target units, and read the converted result. Everything runs in your browser.

Why 'A Cup of Flour' Isn't a Fixed Weight

How the tool converts kitchen volumes to grams per specific ingredient rather than a single universal ratio, and why that distinction actually matters for baking.

Converting Shoe and Clothing Sizes Without a Chart on the Wall

The formulas behind foot-length-to-shoe-size and waist-to-clothing-size conversion, and why a chart on paper never quite matches what you measure at home.

Unit Conversions in Software: Digital Storage, Length, Mass, and Temperature

A guide to converting digital units (MB vs MiB), metric vs imperial measurements, and temperature scales in software systems.

.env Secret Safety Linter

Validate .env syntax and spot likely leaked credentials or placeholder secrets.

.htaccess Generator

Build an Apache .htaccess — HTTPS redirects, rewrites, error pages, security headers, and basic auth

2D Fluid Dynamics & Particle Physics Sandbox

A physics playground with two engines sharing one canvas. The fluid mode runs a real Eulerian Navier-Stokes solver — semi-Lagrangian advection, explicit diffusion, Jacobi pressure projection and vorticity confinement — that you paint with dye and velocity using mouse or touch. The particle mode is a damped Verlet N-body engine with gravity wells, Coulomb attractors and repulsors, spring links, wall restitution and elastic circle collisions. Particle counts adapt to the device (100k target on WebGL2 desktop, 2k-5k on CPU fallback), and every configuration exports as runnable code: a Matter.js world, a PixiJS ticker setup, or a standalone vanilla Canvas engine.

AI Function Calling Schema Generator

Generate function calling JSON schemas from TypeScript interfaces

Algorithm Arena & Data Structure Visualizer

Interactive arena for algorithms and data structures: eight sorting algorithms racing on one seeded input, six pathfinding algorithms walking generated mazes, and BST, AVL, Red-Black, B-tree, heap and trie operations replayed step by step with rotations highlighted. Every run shows the Big-O table and the phase-highlighted reference implementation in four languages, and compared values can be played as pitch (sonification) through the shared audio engine. Everything runs client-side; inputs never leave the browser.

Ansible Playbook Generator

Build an Ansible playbook — hosts, vars, and tasks with modules — as YAML