HomeAppsEducationRule-Of-Three CalculatorApps like Rule-Of-Three Calculator Here are some great alternatives to Rule-Of-Three Calculator by mbar Software : Proportions Calculator ★3.8 Proportion-RuleOfThree-Percent ★4.0 Brewing Calculator ★3.5 Calculator (Simple Calculator) ★3.8 Percentage Calculator ★4.2 Basic Percentage Calculator ★4.6 Calculator of cute cat ★4.5 Calculator PanecalST Plus ★4.9 Fraction Calculator & progress ★4.3 Calculator with Themes ★4.6 Scientific Calculator - Classi ★4.7 Calculator ★4.3 Calculer - Calculator ★4.8 Calculator - Stylish & Modern ★5.0 Percentage calculator ★4.5 Calculator Pro - All-in-one ★4.6