All the fonts in Pair Fonts are free for commercial use. If you happen to find one that you think is not commercial, please let us know. Also, always read the font license, just in case. We would never upload a font that is not meant for commercial use, but we also cannot give you any short of guarantee about them.
You can use these free fonts on commercial graphics, logos, flyers, etc., or the web.
You can check out our guide here.