English is hard enough when you are learning one version. American and British English also differ in spelling, vocabulary, grammar, accent, and even how people say the time. It is not only the accent.

If you travel, work with coworkers abroad, or watch English movies, you will hear both. The list below is the set learners notice first.

The biggest differences between American and British English

You do not have to sound British to understand a British speaker, or the other way around. You do need to know which differences are spelling, which are different words, and which are pronunciation. Mix those up and a simple sentence feels like a new language.

Spelling differences

Spelling is not always the same. Noah Webster campaigned to change American spelling so more words looked the way they sounded.

In the UK, words like humor, favorite, and color are spelled with “ou”. Words that end in “ize” in American English often end in “ise” in British English. Words spelled with “yze” in the US, such as analyze and paralyze, become “yse” in the UK.

British spelling often doubles the L when a vowel sits on both sides — travelling, cancelled, marvellous. American English usually keeps one L. Many words that end in “er” in American English end in “re” in British English, such as centre and theatre.

Vocabulary differences

Americans live in apartments; British speakers call those flats. In the US you take an elevator. In the UK you take a lift.

Other pairs you will hear:

  • Highway / motorway
  • French fries / chips
  • Sweater / jumper
  • Store / shop
  • Mail / post
  • Soccer / football
  • Vacation / holiday
  • Airplane / aeroplane
  • Pants / trousers

Two words for one meaning means more vocabulary to remember. Brits and Americans get mixed up by these too. Context usually saves the conversation.

Grammar differences

Tenses already cause common grammar mistakes. Brits and Americans also use a few of them differently.

British speakers often use present perfect for something that just happened: “Have you had lunch yet?” Americans are more likely to say “Did you have lunch yet?”

“Gotten” is American. In British English, the past participle of get is got. British speakers also use “got” to mean “have”: “Have you got…?” instead of “Do you have…?” Same meaning. The American version is usually easier to remember.

Pronunciation and accent differences

There is no single American accent or British accent. Regions inside each country sound different. Many learners find American English easier to follow because of movies and TV.

Differences you can actually hear:

  • British speakers often say a clear T. Many American speakers soften T so it sounds closer to D.
  • In American English, O is often pronounced “ah”.
  • British English often drops R at the ends of words. The R is stronger in American English.
  • Words ending in “ile” are shorter in American English and longer in British English.
  • Stress can land on a different syllable, so the same word does not sound the same.

If you work in the US, train the American sounds on purpose. That is the side Pronunciation Pro teaches.

How Americans and Brits tell time

In the UK, 4:30 is “half past four” and 4:45 is “quarter to five”. In American English you usually say the numbers: “four thirty” and “four forty-five”. Learn both so a clock time in a meeting does not throw you.

If you want to sound clear in American English, start your free trial and practice the sounds that still get you asked to repeat yourself.