LizoCalc
Free calculators for math, finance, health, education etc.
What it does
LizoCalc is a growing collection of free online calculators for everyday problems. Calculate math, finance, health, physics, education, and time-related problems in seconds. No signup or complicated setup—just choose a calculator, enter your numbers, and get a clear result.
Use LizoCalc's free online calculators for health,math,finance,physics and time etc. Fast, accurate, no signup required.
LizoCalc is a website with free calculators for finance, health, math, physics, and time. Our goal is simple: make every calculator accurate, fast, and genuinely useful, and keep it different from the sites you've tried before. We're adding new calculators all the time. Use any of them without logging in or handing over your data. Right now we have more than 50 calculators, and that number keeps growing. Every calculator runs client-side in your browser. Nothing you enter is stored or sent anywhere, and no account is required. Get instant answers to the most common questions. Can't find what you're looking for? Contact us LizoCalc is a free online platform offering calculators for finance,…from lizocalc.com
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OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com

Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com