HomeAppsEducationRule-Of-Three CalculatorApps like Rule-Of-Three Calculator Here are some great alternatives to Rule-Of-Three Calculator by mbar Software : Proportions Calculator ★4.1 Proportion-RuleOfThree-Percent ★4.0 All-In-One Calculator ★4.7 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 Scientific Calculator - Classi ★4.7 Fraction Calculator & progress ★4.3 Calculator with Themes ★4.7 Calculator ★4.4 Calculer - Calculator ★4.7 Calculator - Stylish & Modern ★5.0 Percentage calculator ★4.5