Guide: How to Say km/h

Whether you are traveling abroad, discussing cars, or simply engaged in a conversation about speed, knowing how to say “km/h” (kilometers per hour) can be quite useful. In this guide, we will explore various formal and informal ways to express this measurement, as well as provide tips and examples to help you incorporate it seamlessly into your conversations.

Formal Ways to Say km/h

When it comes to formal settings, such as business meetings, academic presentations, or official documents, it is important to use the appropriate terminology to convey measurement units effectively. Here are some phrases you can utilize:

“Kilometers per hour”

This is the most common and straightforward way to express km/h. It is widely accepted in formal settings and is easily understood across various English-speaking regions.


In the report, the average speed of the vehicle was measured at 120 kilometers per hour.

Informal Ways to Say km/h

When engaging in casual conversations or informal contexts, it is often preferable to use simpler and more colloquial expressions. Here are some informal alternatives:

“Clicks per hour”

This informal slang term is derived from the sound of old mechanical odometers or the “clicks” they make when measuring the distance. Although it may not be widely understood, it adds a touch of informality to the conversation.


The car was zooming down the highway at over 100 clicks per hour!

“Kilometers an hour”

This casual alternative replaces the word “per” in “kilometers per hour” with “an.” It gives the phrase a more conversational and relaxed tone.


I usually drive around 60 kilometers an hour in residential areas.

Regional Variations

While the formal and informal expressions mentioned above are widely understood across English-speaking regions, there may be some regional variations to consider. Here are a few to keep in mind:

“Kilometres per hour”

In British English, the word “kilometer” is spelled as “kilometre.” If you are in a region that follows British English conventions, it is appropriate to use this spelling.


The speed limit on this road is 50 kilometres per hour.

Tips for Proper Usage

To ensure effective communication, here are some tips to keep in mind when using or discussing km/h:

  1. Context is key: Consider the formality of the situation and adjust your language accordingly. Formal settings typically require more precise and traditional expressions.
  2. Know your audience: If you are unsure about the appropriate expression to use, it is best to stick with the more widely understood “kilometers per hour.”
  3. Practice pronunciation: Familiarize yourself with the correct pronunciation of “km/h” to ensure you are understood clearly. It will boost your confidence during conversations.
  4. Use hand gestures: If you are in a situation where verbal communication is challenging, consider using hand gestures to represent the concept of speed. This can help convey your meaning effectively.


Bob: How fast was he driving?

Alice: He was going about 100 kilometers per hour. (Formal)

Bob: Wow, that’s over 60 clicks an hour! (Informal)

Alice: Yeah, it was really fast!

In conclusion, knowing how to express km/h properly is useful in various situations. Whether you are having a casual chat or discussing measurements in a formal setting, these phrases will allow you to communicate speed accurately. Remember to adapt your language to the context, consider regional variations if necessary, and always aim for clear and effective communication.

⭐Share⭐ to appreciate human effort 🙏
Inline Feedbacks
View all comments
Scroll to Top