Cool MateAlter vs Convert
When to use each in English, with meaning, register, and examples.
Alter
Beyond 10,000 (less common)B2verb
Convert
Top 2,000 (common)B2verb
Most common: Convert
| Alter | Convert | |
|---|---|---|
| Pronunciation | 🇬🇧 //ˈɔːltə//🇺🇸 //ˈɔltɚ// | 🇬🇧 /["/kənˈvɜːt/","/kənˈvɜːts/","/kənˈvɜːtɪd/","/kənˈvɜːtɪŋ/"]/🇺🇸 /["/kənˈvɜːrt/","/kənˈvɜːrts/","/kənˈvɜːrtɪd/","/kənˈvɜːrtɪŋ/"]/ |
| Meaning | To change something. | to change something into a different form or use |
| Example | The dress was altered to fit better. | I need to convert this document from PDF to Word format. |
| Register | Neutral | Neutral |
| How common | Beyond 10,000 (less common) | Top 2,000 (common) |
| CEFR level | B2 | B2 |
| Part of speech | verb | verb |
| Collocations | alter the course, alter the agreement, alter the design, alter behavior, alter personality | convert currency, convert data, convert files, convert ideas, convert a room |
| Antonyms | preserve, maintain, retain | maintain, preserve, stay |
| Common mistakes | Confusing with 'change' - 'alter' usually implies a more significant adjustment., Using 'alter' without an object - it should always follow an object., Incorrectly using 'altered' as a noun. | Confused with 'transpose' — they are not interchangeable., Often misused in passive voice without a subject., Incorrectly used when referring to simple changes that do not involve a transformation. |
| Usage notes | Use 'alter' when you want to indicate a change or modification. It is more formal than 'change'. Avoid using it for very minor or trivial adjustments. | Commonly used in both technical and everyday contexts. Suitable in neutral conversations but may be formal in legal or financial discussions. Avoid slang contexts. |
Frequently asked questions: Alter vs Convert
What's the difference between Alter and Convert?
Alter: To change something. Convert: to change something into a different form or use
Which is more common: Alter and Convert?
Convert is the most common in everyday English.
Are Alter and Convert the same CEFR level?
Alter: B2, Convert: B2 on the CEFR scale.
Can I use Alter and Convert interchangeably?
Not always. Alter and Convert are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.