🛒 smart shopping calculator
Stop guessing — compare products by what actually matters.
🌙 dark
🧻 toilet paper
💪 protein powder
+ add roll
By weight
By sheet count
By diameter
👋 By hand
your hand measurements
(set once, used for all rolls)
finger width (mm)
palm width (mm)
thumb length (mm)
Tip: measure your finger width and palm width with a ruler once. Defaults are average adult values.
add at least two rolls to compare
+ add powder
add at least two powders to compare