Full Screen Calculator

What this calculator does

This is a calculator that fills your whole screen. Same buttons, same sums as an ordinary one, just big. Large keys, a large display, and nothing else competing for the space.

It runs right here in the browser, so there is nothing to install, and you can tap the buttons or type on your keyboard.

When a full-screen calculator helps

A small calculator in the corner of a page is fine most of the time. But there are moments when big is genuinely better, and that is what this is for.

• Sharing a screen. In a class, a meeting, or a video call, a full-screen calculator is readable by everyone watching, not just the person holding the mouse.
• Using a laptop as a desk calculator. Left open on a second monitor, it works like the chunky calculator that used to sit on the desk, easy to glance at and easy to hit.
• Easier to read and tap. Bigger digits are kinder on the eyes, and bigger keys are easier to hit on a touchscreen without fumbling.
• Fewer distractions. With the calculator taking the whole screen, there is nothing else to pull your attention while you work through a set of figures.

Using it

1. Build your sum with the number and operator keys: +, −, ×, ÷, brackets, decimals and %.
2. Press = for the answer, or C to clear.
3. Your keyboard works too: type the digits and operators, and Enter acts as equals.

A quick word on the order of operations

Like any proper calculator, this one does not just go left to right. It does brackets first, then multiplication and division, then addition and subtraction, so 2 + 3 × 4 comes to 14, not 20. If you want a part done first, wrap it in brackets. There is a fuller explanation, with worked examples, on the standard maths calculator, which is the same tool in a normal-sized layout.

Questions people ask

How is this different from a normal calculator?

It is the same calculator, just laid out to fill the whole screen. The maths is identical; the only change is size, which makes it easier to read, easier to tap, and better for sharing a screen.

Can I type instead of tapping?

Yes. The digit and + - * / keys work, and Enter acts as equals, the same as the buttons.

Does it follow the order of operations?

Yes. Brackets first, then multiplication and division, then addition and subtraction, so 2 + 3 × 4 gives 14.

Is it good on a touchscreen?

That is one of its best uses. The larger keys are much easier to hit accurately on a phone or tablet than a small calculator's buttons.

References

A note on where this comes from. Whatever its size, the calculator follows the standard order of operations, the agreed convention that brackets come first, then multiplication and division, then addition and subtraction, so every expression has a single clear result. For further reading, see Order of operations.

1. The order of operations convention, which fixes the sequence in which an expression is worked out.