TextRanch

The best way to perfect your writing.

Discover why 1,062,726 users count on TextRanch to get their English corrected!

1. Input your text below.
2. Get it corrected in a few minutes by our editors.
3. Improve your English!

One of our experts will correct your English.

i know whether vs i know if

Both "I know whether" and "I know if" are correct phrases, but they are used in different contexts. "I know whether" is used when there are two or more options or possibilities, while "I know if" is used when there is a yes/no question or a simple condition.

Last updated: March 17, 2024 • 533 views

i know whether

This phrase is correct and commonly used in English when there are two or more options or possibilities.

Use "I know whether" when you are referring to a situation where there are multiple options or possibilities, and you are aware of which one is true.

Examples:

I know whether he will come to the party or not.
Do you know whether it will rain tomorrow?
She wants to know whether you prefer tea or coffee.
We need to find out whether the store is open today.
I don't know whether I should take the job offer.

Show examples from the web [+]

How do I know whether or not I am legally authorized to upload and share materials that I access online? Frequently, the copyright owner will post online " terms ...
Apr 13, 2014 ... I do - I know whether he is OK. I don't - I don't know whether he is OK. He is - I know that he is Ok. He isn't - I know that he is not OK. VikNikSor ...
How Do I Know Whether Online College Is Right for Me? Whether you're working a full-time job, unemployed, a high school graduate or a stay-at-home parent, ...
When will I know whether my child is a righty or a lefty? Laura Jana. pediatrician. Most children start showing a clear preference for one hand or the other around ...

Alternatives:

I am aware of whether
I can determine whether
I can tell whether
I can find out whether
I can ascertain whether

i know if

This phrase is correct and commonly used in English when referring to a yes/no question or a simple condition.

Use "I know if" when you are talking about a situation where there is a yes/no question or a simple condition, and you are aware of the answer or outcome.

Examples:

I know if she is coming to the meeting.
Do you know if the train is delayed?
He wants to know if you have finished the report.
I don't know if I can make it to the party.
She asked if you were going to the concert.

Show examples from the web [+]

How Do I Know if I'm Pregnant? When you're wondering whether or not you're pregnant, you need to know -- now! Look out for these common, early pregnancy ...
"Recently I read John Bytheway's newest book, How Do I Know If I Know? I enjoyed it immensely; it is excellent—inspiring and extremely informative. As I read ...
How Do I Know If I Have Bed Bugs? I Have Bed Bugs, Now What? Can I Avoid Bed Bugs? Bed Bug TV · Bed Bug News · Resources · Activ & Volcano · Blog ...
... Physicians/Fertility Clinics, Third Party Reproduction. www.resolve.org > About Infertility > What is Infertility > How do I Know if I Have an Infertility Problem?

Alternatives:

I am aware of whether
I can determine whether
I can tell whether
I can find out whether
I can ascertain whether

Related Comparisons

What Our Customers Are Saying

Our customers love us! We have an average rating of 4.79 stars based on 283,125 votes.
Also check out our 2,100+ reviews on TrustPilot (4.9).

"Thank you!"
Sachi Nakama July 2024
"I have literally been through chat, PI, claude, bard and bing and I got conflicting answers! Thank you! Human intelligence reigns!"
Retha July 2024
"Faster than AI"
CYNTHIA December 2023
"This was very helpful and I personally think this site is the best."
Kaden October 2023
"It was extremely thorough and very helpful!"
imperialelisa October 2023
"7 years without any disappointment. Always 100% satisfied. You guys are the best in the world at what you do. Thank you so much :)"
Zubair Alam October 2023
"In a world of text messages and online communication, this is great to have as a live tool. Thank you."
Selena October 2023
"Without textranch I would be stuck!"
宏祐 October 2023
"Accuracy and fast response. Personal comments from editor. Thank you."
Clh September 2023
"I wasn't aware of this service, it's fascinating and more reliable than standard IA tools available on the internet"
Arturo September 2023
"The fact that you can get reliable fast feedback on your texts."
Vinicius Antonio August 2023
"you guys are better than grammarly i'm being honest here"
ordinary July 2023
"OMG! This is really good than any other text correction tools I've used so far. Highly recommend this."
Vehan July 2023
"Very fast and accurate. thank you."
mojtaba July 2023
"I love this app because it's help to writing skills all of students ♥️"
Tarisini July 2023
"This was exactly the mistake I was looking for, the wording dind´t sound right at first. Better than grammarly!"
Ente July 2023
"The immediate help that I received was reassuring and very satisfactory. Thanks."
priiiyanshuu July 2023
"this helps A LOT for my studies."
kathnunez02 June 2023
"Woow!! I would never have expected such precision! Thank you soooo much!!"
Berta June 2023
"Real Time Editor and not AI. Many Thanks."
Priya June 2023
"The very first thing excites me about Textranch is how much your editors care."
sepideh June 2023
"The fact that texts are checked by human editors rather than by AI, etc. I appreciate this!"
Анна June 2023
"Feel welcome, immediate response, high quality feedback"
martin.roy June 2023
"This is the best app that I have ever seen"
Burulai May 2023

Why choose TextRanch?

Lowest prices
Up to 50% lower than other online editing sites.

Fastest Times
Our team of editors is working for you 24/7.

Qualified Editors
Native English experts for UK or US English.

Top Customer Service
We are here to help. Satisfaction guaranteed!