Standardize Website Logo Heights

I have 15 individual logos, all supplied as JPEG or PNG files, and I need them to display at an identical height on my website. I haven’t fixed a pixel value yet, so I’d like you to recommend a sensible, web-friendly height that will look sharp on both desktop and mobile screens... (Budget: $30 - $250 CAD, Jobs: Adobe Photoshop, Graphic Design, HTML, Image Processing, Logo Design, Photo Editing, Web Design, Website Design)