How can i tell my finger is broken please?

Move it: If you can move it or it's not deformed, it's likely not broken. If you can but with pain, then it may be broken. The only way to know for sure is by x-ray.

X-rays: If you recently sustained trauma to your finger and there is any cause for concern that it might be broken, have a hand surgeon examine the finger and obtain plain film radiographs. Most broken fingers are swollen, painful to move and will have x-ray findings of a fracture.Frac.