About
Instruments, not gimmicks.
Last updated: July 2026
Reckon is a small collection of calculators and converters, each built to do exactly one job well: load instantly, work without an account, and give you a precise answer without clutter.
No sign-ups, no paywalls, no dark patterns — just the numbers.
Most calculator sites on the web are cluttered with ads, slow to load, and dated in design. Reckon is an attempt to do the opposite: a fast, clean, static site where every tool feels like a well-made instrument rather than a webpage stuffed with banners.
Reckon is one of the experiments under Nootan Labs — an observatory of small, curiosity-driven web projects. Have a look at the other experiments if you're curious what else lives there.
Found a bug, or have an idea for a tool that's missing? Get in touch — Reckon is actively maintained and expanded.