QuickCalcs

• Keypad Calculator (Single) Do not use, we have not solved yet how to change to next operand.
• Keypad Calculator (Dual) Only for tablets, wide screen.
• Columnar Calculator (Dual)
• Circular Calculator
This is the only one using canvas instead of HTML elements.
• Round Calculator It is another variant of circular with extra features
• Clock with Calculator Suitable for iframe widgets, it uses a square area and it features an actual clock

  I think this is the final version so I have also documented a intro page for it: see Clock with Calculator - Introduction

Share: Tweet the demo

Accessibility note: several of these calculators use big buttons, a predictable layout, and fewer mode/symbol hunts. They may be helpful for people with dyscalculia or math anxiety by reducing cognitive load. They can also double as a simple “single‑digit calculator” — just ignore glide gestures and tap one digit at a time. Learn more about the radial keypad in the intro page.

If you’re looking for more sophisticated operations beyond the four basic operations, consider Dyscalculator by explainIT (Gary Sharpe).

<iframe
  src="https://arivero.github.io/quickcalcs/clock.html"
  width="400"
  height="400"
  frameborder="0"
  loading="lazy"
  title="Clock with Calculator"></iframe>