📐Purpose Hub

Science & Math(理数・単位)

Equations, calculus, matrices, geometry, circuits, mechanics, and unit converter

100% Client-Side7 Categories / 19 Tools

Unit Conversion(単位変換)

General-purpose two-way conversion for length, area, volume, mass, pressure, energy, temperature, and data size

2

Physics & Mechanics(物理・運動力学)

Projectile-motion ballistic simulation, RLC circuit resonance, and vehicle gear-ratio/speed calculations

3

Optics & Acoustics(光学・音響)

Camera depth-of-field & hyperfocal distance, acoustic engineering, BPM delay, and frequency/MIDI conversion

4

Algebra & Equations(代数・方程式)

Quadratic equations, Cardano cubic equations, simultaneous linear equations, and differentiation/expansion (CAS)

4

Geometry & Solids(幾何・立体)

Triangle geometry solver & five-center coordinates, and volume/surface area of solids (sphere, cylinder, cone)

2

Analysis & Linear Algebra(解析・線形代数)

Numerical definite integration (Simpson’s rule), ODEs (4th-order Runge-Kutta), and matrix operations/LU decomposition

3

Custom Formula & CAS(自作式・CAS)

A free-form formula editor, variable binding ($ans), and sandboxed evaluation via Math.js

1