fend

fend is an arbitrary-precision unit-aware calculator.

Unique features:

• Arbitrary-precision arithmetic using rational numbers
• Full support for complex numbers
• D&D-style dice rolls
• Variables
• Binary, octal, hexadecimal and all other bases between 2 and 36
• Keep track of units, with support for SI, US and UK customary and many historical units
• Emacs-style CLI shortcuts
• Trigonometric functions
• Lambda calculus

See the manual for more information.

Web Interface

fend is available on the web at printfn.github.io/fend.

Installation

The easiest way to install fend locally is via your package manager:

| Package Manager | Command | | ----------------------- | -------------------------- | | Homebrew | brew install fend | | AUR (Arch Linux) | yay -Syu aur/fend-bin | | Nix | nix-env -iA nixpkgs.fend | | Cargo | cargo install fend | | Windows Package Manager | winget install fend | | Chocolatey | choco install fend |

Alternatively, you can manually download the latest stable binaries here.

Once fend is installed, run fend to start a REPL session:

``` $ fend

1 ft to cm 30.48 cm

```

Packages

• Homebrew
• AUR (built from source)
• AUR (pre-built binary)
• nixpkgs
• Windows Package Manager
• Chocolatey
• NPM fend-wasm package
• NPM fend-wasm-web package
• NPM fend-wasm-nodejs package
• Telegram Bot

Manual

You can find the fend manual here.

Examples

```

5'10" to cm 177.8 cm ```

```

cos (pi/4) + i * (sin (pi/4)) approx. 0.7071067811 + 0.7071067811i ```

```

0b1001 + 3 0b1100 ```

```

0xffff to decimal 65535 ```

```

100 C to F 210 °F ```

```

temperature = 30 °C 30 °C temperature to °F 86 °F ```

```

roll d20 8 roll 4d6 17 ```

License

fend is MIT-licensed. See LICENSE.md for more information.