An adjustable toilet seat riser, including an upper seat with an upper seat bridge, a lower platform including a lower platform bridge and at least one sleeve, and a spring, where the spring is internally positioned in the upper seat bridge and the lower platform bridge when upper seat is secured to lower platform. A method of installing an adjustable toilet seat riser on a toilet, including, compressing two arms of the adjustable toilet seat riser, relaxing the two arms of the adjustable toilet seat riser when positioned on a toilet, and engaging at least one sleeve on the adjustable toilet seat riser to an inner rim of the toilet.