American vs British English

The English taught in many European schools leans British, but the English people hear in movies, TV shows, and tech workplaces is more often American. The two varieties are fully mutually intelligible: a Briton and an American understand each other without difficulty. Still, a handful of recurring differences are worth knowing, especially if you write in English or are preparing for an interview in the United States.

1. Spelling: seven rules that cover most cases

The rule of thumb: if a word looks shorter or more phonetic, it's probably the American version. One caution: -ize is not exclusively American. It is also accepted in British English (it is the Oxford English Dictionary's preference), although -ise is more common there.

2. Everyday vocabulary

Vocabulary is where you notice the difference fastest. A few words worth memorizing:

3. False friends between the two varieties

Trickier than different words are identical words with different meanings.

Sports vocabulary is its own world: see our guide to American sports. In education, college means higher education in general in the U.S.; see studying in the United States.

4. Pronunciation

Three differences account for a large share of cases:

• The final r. American English is largely rhotic: the r at the end of words is pronounced (car, better). British "Received Pronunciation" is non-rhotic: the final r drops except in liaison.
• The t between vowels. In American English it often becomes a quick flap close to a d: better sounds like "bed-er," water like "wah-der." This trips up learners used to a hard t.
• The a in words like bath, can't, after. British English uses a long back vowel ("bahth"); American English uses a flatter vowel, closer to the short "a" in "cat."

As for accents, neither variety is uniform. In the U.S., Southern speech stretches vowels, traditional Boston and some New York accents drop the r, and the "General American" heard on news broadcasts is itself a convention, close to Midwestern speech. In the UK, the gap between London, Liverpool, Glasgow, and Belfast is wider still, and Received Pronunciation is spoken by only a minority.

5. Grammar and forms

• Past simple vs present perfect: Americans often prefer the past simple where Britons use the present perfect. Did you eat? (US) ≈ Have you eaten? (UK).
• Got vs gotten: the past participle of to get is got in the UK; in the US it's gotten (I have gotten), except in the sense of "to possess."
• Collective nouns: British English allows the team are winning; American English prefers the team is winning.
• Prepositions: at the weekend (UK) / on the weekend (US); in hospital (UK) / in the hospital (US); different from / to (UK) / different from / than (US).
• Auxiliaries: shall is still alive in British English but marginal in American English.

6. Dates, times, and numbers

• Date format: US MM/DD/YYYY (04/25/2026); UK DD/MM/YYYY (25/04/2026). A real source of administrative errors.
• Time: the US usually uses the 12-hour clock with AM/PM; in the UK both formats coexist.
• Decimals: both varieties use the period as the decimal separator (3.14), unlike French and many other European languages.
• Thousands: both separate thousands with commas (1,000,000).
• Floors: US 1st floor = ground floor; UK ground floor = ground level, 1st floor = the floor above it. A classic source of hotel confusion.

7. Register, politeness, and tone

Professional American English is more direct and more action-oriented than British English, which leans more on the implicit and on understatement.

• An American manager might say "This is great, but here are three things to fix"; a British manager might prefer "It might be worth having another look at a couple of points."
• "Quite good" means "really good" in American English but "fairly good, not great" in British English — a well-known trap.
• Sign-offs are shorter in American English: "Thanks!" often replaces "Many thanks, kind regards."

8. Practical decision: which variant should you use?

• If you're writing for American readers (a résumé, a work email, a website), use American spelling and vocabulary consistently.
• If you're writing for Europe or the Commonwealth, stick with British English.
• Avoid mixing: a text that combines color and centre looks careless.
• On a résumé for the U.S., give dates as month and year (June 2024), leave out your photo and age, and keep the English short and results-oriented.
• For language tests, the variant barely matters: TOEFL and IELTS both accept American and British English as long as you stay consistent.
• Set your spell-checker correctly (en-US or en-GB) — half the problems start there.

For more on adapting to U.S. workplace norms, see our guide to working in the United States, and for the broader cultural picture, daily life in the U.S. and USA vs Europe.

Related articles:

• Daily life in the United States
• American holidays & traditions
• USA vs Europe
• Working in the United States