1. TRUNG TAM VAN HOA CHIA SE

3. Comparison IELTS TOEFT Definition Type of English
Test of English as a Foreign Language
International English Language Testing System
Definition
British English (academic situations)
American English (academic situations)
Type of English
A variety of styles (only a few questions are multiple-choice)
Mostly multiple-choice (except writing)
Question style
Listening, reading, writing, speaking (face-to-face oral test)
Listening, reading, writing. TSE speaking test at extra cost (not face-to-face)
Skill test
Paper-based or computer-based (CB IELTS).
Internet-based (TOEFL iBT), computer-based (TOEFL CBT) or paper-based (TOEFL PBT)
Test type

4. Which is better for You?
Here are some advices and I hope you will find something useful ☺

5. British vs American English
IELTS tends to use British English and the TOEFL uses exclusively American English.
if you have problems with the British accent (and the test may include a wide variety of accents, including Australian, New Zealand, Irish and Scottish).
On the other hand, American accents may throw you off. Certain terms are also different and you don't want to waste time in your speaking test asking what a flat or a lorry is.
So whether you are used to British or American English is certainly a factor.
If you are more comfortable with US English, the TOEFL is a good choice but if you are used to British English and accents, you'll do better on the IELTS.

6. Multiple choice vs Copying Down
For the reading and listening sections, TOEFL gives you multiple-choice questions,
whereas IELTS generally expects you to copy down words from the text or the conversation word-for-word.
So, concrete thinkers will tend to do better on the IELTS and abstract thinkers will tend to excel on the TOEFL.
Multiple-choice
Copying-Down
require slightly better abstract thinking
have good memories and think more concretely.
easy to pick out wrong answers
the answer is sitting there in the text. You just have to find it and repeat it.

7. Predictable vs Different Every Time
Of course, the TOEFL is also more predictable than the IELTS.
The IELTS throws lots of different question types at you, and the instructions are often slightly different every time. That makes it harder to prepare for.
The TOEFL, on the other hand, is pretty much the same test every time--pick A, B, C, D, or E.
On the other hand, the IELTS certainly keeps you on your toes and that can keep you more alert.

8. Speaking to a Person or a Computer?
Another large difference is in how the speaking section is carried out. For some people, it's very relaxing to just record your answers into a computer because it feels like no one is listening. You just try your best and forget about it until you get your grades.
Because the IELTS test is done in an interview format with a native speaker present, you might get nervous or feel you are being judged. And they take notes: Oh God, did he write down something good or something bad? On the other hand, you might feel more relaxed in a conversation, with a person there to explain if you don't understand a question, or simply having a face to look at, instead of a computer screen.
Getting feedback from a native speaker can be helpful too, in order to correct mistakes and improve during the test. So it depends on what you are more comfortable with.
If you like talking to people, the IELTS is a better choice. If you just want to be alone and not feel judged, the TOEFL will be more comfortable for you.

9. http://www.ielts.org & http://www.toefl.org
Holistic vs Criteria
If you write well but have a lot of small grammar mistakes, your TOEFL score might be quite good because graders will ignore small mistakes if the overall essay is logical and detailed. The IELTS will not overlook bad grammar.
If you don't feel comfortable writing essays but you think you have excellent grammar and vocabulary and overall are a decent writer, the IELTS will probably be easier for you.
I hope this essay was helpful in making your choice. In any case, I recommend you go to the websites of IELTS and TOEFL and get some more detail on each test, and also try out some practice problems on your own.
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10. Thank You !