noun which may take the genitive case particle 'no'
for calculation; computational; tallying
Used as a no-adjective to describe tools, sheets, or purposes related to calculation or tallying.
計算用のソフトをインストールした。
I installed software for calculations.
この計算用シートはとても便利だ。
This calculation sheet is very convenient.
Compound of 計算 (calculation) and 用 (for the purpose of).