Funny Things To Do With Calculator

Relive the classic classroom trick of spelling words on a calculator. This fun tool shows you how!

Calculator Word Generator

What Are Funny Things to Do with a Calculator?

One of the most classic funny things to do with a calculator is “calculator spelling”. This is the art of typing a sequence of numbers, then turning the calculator upside down to reveal a word. This trick dates back to the 1970s and became a popular pastime for students in math classes. The words are formed because the seven-segment displays on older calculators make certain numbers look like letters when inverted. For example, ‘3’ becomes ‘E’, ‘7’ becomes ‘L’, and ‘5’ becomes ‘S’.

This practice, also known as beghilosz, is a type of ambigram—a word or figure that can be read in multiple ways. While modern calculators with dot-matrix screens don’t produce the same effect, the nostalgia and fun of discovering these “secret” messages persist. If you’re looking for fun math facts, this is a great one to share.

The “Formula” Behind Calculator Spelling

There isn’t a mathematical formula, but rather a character map. To perform these funny things to do with a calculator, you need to know which numbers correspond to which letters when flipped. The number sequence must be typed in reverse order of the letters in the desired word.

The basic mapping of numbers to upside-down letters.

Number	Upside-Down Letter	Typical Use
0	O	Used for the letter ‘O’.
1	I	Used for the letter ‘I’.
3	E	The most common substitute for ‘E’.
4	h	Used for a lowercase ‘h’.
5	S	Used for the letter ‘S’.
7	L	The standard for the letter ‘L’.
8	B	Used for the letter ‘B’.
9	g	Used for a lowercase ‘g’.

Practical Examples

Let’s see a couple of examples of these calculator tricks in action.

Example 1: Spelling “hELLO”

• Inputs: The word “hELLO” is composed of the letters h, E, L, L, O.
• Units: The numbers are unitless. The translation is 4 for ‘h’, 3 for ‘E’, 7 for ‘L’, and 0 for ‘O’.
• Result: You must type the numbers in reverse: 0.7734. The leading zero and decimal ensure the full number is displayed. When you flip it, you see “hELLO”.

Example 2: Spelling “BOOBIES”

• Inputs: The infamous word “BOOBIES”.
• Units: Again, these are unitless numbers. ‘B’ is 8, ‘O’ is 0, ‘I’ is 1, ‘E’ is 3, ‘S’ is 5.
• Result: Typed in reverse, the number is 5318008. When flipped, it produces the classic giggle-worthy result. Exploring math puzzles can be just as entertaining.

How to Use This Calculator of Funny Things

Our calculator makes it easy to find funny things to do with a calculator without the guesswork.

1. Select a Word: Choose a word from the “Choose a Word to Spell” dropdown list.
2. View the Number: The “Number to Enter” field will automatically show you the correct number sequence.
3. See the Result: The main result box displays the word as it would appear when you flip the calculator over.
4. Reset or Copy: Use the “Reset” button to clear the selection or “Copy Results” to save the word and its corresponding number.

Key Factors That Affect Calculator Spelling

Not all words can be spelled. Here are key factors that determine what makes a good candidate for one of these cool math games.

• Available Letters: You are limited to the letters B, E, G, H, I, L, O, and S. Any word containing other letters is impossible.
• Readability: Some number-letter combinations are more convincing than others. ‘3’ for ‘E’ is very clear, while ‘9’ for ‘g’ can be a stretch.
• Word Length: Longer words are more impressive but harder to find. “EGGSHELL” (77345663) is a great example.
• Calculator Display: The trick works best on a classic seven-segment LCD screen.
• Humor and Nostalgia: The most memorable words are often humorous or were the first ones people learned, like “BOOBIES”.
• Number Entry Order: You must always enter the numbers in reverse order for the word to read correctly when flipped. This is a common point of confusion for beginners. For other fun with numbers, check out our percentage calculator.

Frequently Asked Questions (FAQ)

1. What is calculator spelling?

It’s a trick where you type numbers into a calculator and turn it upside down to spell words. This is one of the oldest funny things to do with a calculator.

2. Why do you have to turn the calculator upside down?

The numbers on a seven-segment display are designed to look like letters only when they are inverted.

3. What are the letters you can use?

The core letters are B, E, G, H, I, L, O, and S. Some might use Z for 2. This set is sometimes called “beghilos”.

4. Can I do this on my smartphone calculator?

Usually not. Most modern smartphone calculators use fonts that don’t resemble letters when flipped. You need an old-school display.

5. What’s the most famous calculator word?

5318008, which spells “BOOBIES” upside down, is arguably the most famous and classic example.

6. Why do I need a decimal for “hELLO”?

To spell “hELLO” (0.7734), the leading zero is required. Typing just 7734 would work, but the story often includes the leading ‘O’, which requires starting with a “0.”.

7. Are there any long words I can spell?

Yes! “EGGSHELL” (77345663) and “GIGGLE” (376616) are good examples of longer words.

8. Is there a unit of measurement for these calculations?

No, the numbers are unitless. They are simply digits that visually represent letters. Just another one of the many interesting facts about calculators.