Free Tools
Interactive calculators built for watercolor painting for beginners. No sign-up, no downloads — enter your numbers and get an answer you can act on.
Watercolor Paper Weight Converter
Convert watercolor paper weight between imperial pounds and gsm, with the standard 90/140/200/300 lb trade weights and their labeled gsm equivalents.
Mat & Frame Size Calculator
Work out the frame size to buy and the mat opening to cut or order for a finished watercolor painting, from image size and mat border width.