Instantly check your tonal values. Convert any reference photo or artwork to black and white to reveal the true structure of light and shadow.
Upload your artwork or reference photo to instantly check its true tonal values. Fast, free, and private.
Open Grayscale ConverterColor can be deceptive. A bright red might look "lighter" than a dull blue, even if they have the exact same tonal value. This confusion often leads to paintings that lack depth or contrast.
By using a grayscale converter, you strip away the hue and saturation, leaving only the "values" (the lightness or darkness). This reveals the true skeletal structure of your image. If the grayscale version looks good, the color version will likely look great. If the grayscale looks flat, your painting will look flat.
One-click conversion to see your image in pure grayscale values.
Don't just see gray; simplify it. Break your image into 3, 5, or 10 distinct value steps.
Upload your painting and your reference side-by-side (in separate tabs) to check accuracy.
Learn more about checking values in your art.