* Haha: This is the closest and most common equivalent.
* Hehehe: Similar to haha, but implies a slightly more mischievous or silly laugh.
* Asså: (literally "so") This is a common interjection used to express amusement or agreement, similar to how "lol" can be used to show agreement or lightheartedness. It doesn't directly translate to "laughing out loud" but fits the informal context.
* XD: This emoticon is also understood internationally, including in Sweden.
So, depending on the context, "Haha," "Hehehe," "Asså," or "XD" would be the best options.