SundialNook makes clear, honest calculators for the everyday math of work: hours on a time card, what an hourly wage adds up to, overtime and raises, military time, and deadlines counted in days or business days. Every result shows how it was worked out, the rules we follow are linked to official sources, and everything runs in your browser, so the numbers you enter stay with you.
How our tools work
Every tool on SundialNook runs inside your web browser. When you open a file, your own device does the work using built-in browser technology and WebAssembly. Nothing is uploaded, so the tools are fast, work with large files, and keep your files private.
Free, without sign-ups
You'll never need an account or an email address. The site is paid for by ads, which we keep out of the way of the tools themselves.
Who we are
SundialNook is built and maintained by BlueEra. We'd love to hear which tool you'd like next, or about anything that doesn't work: get in touch.
More free tools from us
- WaveNook: free mic test, voice recorder, audio cutter and converter.
- PrismNook: free image compressor, resizer and HEIC to JPG converter.
Open-source software
SundialNook is built with Preact, Lucide icons, Mona Sans font. Thank you to their authors. See the open-source licences for versions, source code and licence texts.