Empirical Formula Calculator

Calculate empirical formula from percentage composition or mass data. Find simplest whole number ratio of elements, determine molecular formula from molar mass, and analyze element composition. Features 28+ elements with atomic masses, 10+ common compounds (H₂O, CO₂, C₆H₁₂O₆, etc.), rounding options (nearest/floor/ceil), and step-by-step solutions. Perfect for chemistry students.