English Numbers: Decimals and How to Write & Say Them | B1
A bite-size guide for English learners to write and say decimals right in real talks, not just in mathematics.

Examples of Decimals
0.5: "zero point five" or "point five"
3.14: "three point one four"
12.345: "twelve point three four five"
Writing Decimals: Dots vs Commas
Decimals in English can be confusing as many countries use a comma (,) in these types of numbers (1,5).
In most English speaking countries (and in some others) a decimal point (.) is used instead (1.5).
How to Read Decimal Numbers in English
How to Say Very Small Numbers
Instead of "zero point zero zero one" (0.001) you can use a shorter from by skipping the first "zero":
0.001: "point zero zero one"
0.0001: "point zero zero zero one"
Nought: commonly used in British
English, especially in mathematics:
"The number is nought point five." (0.5)
To pronounce decimal numbers in English, follow these guidelines:
1. Whole Number Part: Read the whole number part as you normally would.
2. Decimal Point: Say "point" for the decimal point.
3. Fractional Part: Read each digit individually after the decimal point.
Examples:
0.3 – zero point three
1.25 – one point two five
4.07 – four point zero seven
9.5 – nine point five
12.355 – twelve point three five five
100.01 – one hundred point zero one
0.009 – zero point zero zero nine
27.6 – twenty-seven point six
Handy Tips
1. Remember this special decimal number:
0.5 is also called a half.
2. You see decimal numbers every day in prices like $19.99, sizes like 1.5 meters, or data like 7.3% growth.
- For shopping, say $19.99 as "nineteen dollars ninety-nine cents."
- In recipes, 0.5 tsp becomes "half a teaspoon"
- At work, report 3.2% growth as "three point two percent growth."
Also explore:
- How to Say Fractions in English
- Intermediate Level Phrasal Verbs
- Will vs Going to to talk about future events
or
Continue to the Intermediate Level English Language Resources for more topics and tips