fend
An arbitrary-precision unit-aware calculator with support for complex numbers, dice rolls, and multiple unit systems.
What is fend?
Fend is an arbitrary-precision unit-aware calculator that performs exact calculations using rational numbers and supports complex numbers. It automatically handles unit conversions across SI, US/UK customary, and historical units, and includes features like dice rolls and multi-base arithmetic. It provides both a command-line interface and a web version for mathematical and practical computations.
Developers, engineers, scientists, and students who need precise calculations with unit conversions, especially those working in fields like physics, engineering, or data analysis. It's also suitable for tabletop gamers needing dice roll simulations and programmers dealing with multiple numeric bases.
Developers choose fend for its combination of arbitrary-precision arithmetic, automatic unit tracking with conversions, and support for complex numbers—all in a single tool. Its unique selling points include D&D-style dice rolling, lambda calculus support, and versatile CLI shortcuts, distinguishing it from basic calculators.
Overview
Arbitrary-precision unit-aware calculator
Use Cases
Best For
- Performing exact mathematical calculations with rational numbers to avoid floating-point errors.
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