Online IQ tests are not accurate. If you want an actual IQ test, go see a qualified professional to get one.
actually did this once, it's a lot of money but it's a lot different than the "online" tests
the problem with most online IQ tests is that they don't account for what it's like to see the person in real life - in an actual IQ test, they assess ability to communicate, problem solve and how knowledgable you are with certain topics.