I have different sizes of tiles, can I make them fit properly?

Hello, And I have made a map in tiled that uses 32x32 tiles. My old spritesheet along with some other online ones I want to use, use 16x16. I have sprites I want to use from them. Is there a way I can resize them without making them leek into the other tiles on the sheet, or making them compatible to a 32x32 map?

What about just scaling them up by a factor 2 with an image editor? If you want to avoid blurring, be sure to disable any kind of interpolation.

I figured out that I can just make my map use 16x16 tiles, than I just select the entire 32x32 tile or parts of it to place. thanks!