How can I know what chord this is?

Try Chord Namer at jguitar.com!

The chord namer will automatically name a chord shape (if a valid chord shape is supplied.) Simply select the circles on the fretboard that correspond to where your fingers go and hit “Go”. A few things to watch out for:

Strings that aren’t strummed should be set to “Mute” and open strings should be set to zero.
Don’t enter your chord upside-down! The fretboard is shown with the lowest pitch string at the bottom and the highest pitch string at the top (unless you’ve tuned your instrument differently.)
If there is more than 1 way to name the chord you supplied, the chord namer will give you multiple results. They are all correct but which one you choose may depend on the context it is used in.

Paul Elwood
Paul ElwoodPaul Elwood Guitar Coach
I most enjoy the interaction between myself and my students. There is something profoundly cool about helping a guitarist or a uke player on their own path. I find working with beginners- especially adult beginners- is both humbling and fulfilling. I like to think I offer an excellent product! And I truly enjoy working with people who are either looking to take up this wonderful instrument or improve their playing. My remote students get a combination of real-time coaching and personal customized video lessons and in-person students get the advantage of one-to-one focused attention, of course. We start out with a goal -usually a song you want to learn- decide when we’ll meet, and figure out how long it’s going to take to get it the way you want.