Molecular Weight & Molar Mass Calculator
Calculate molecular weight from chemical formulas instantly
Free online molecular weight calculator for calculating molar mass of any chemical compound. Enter a chemical formula and instantly get the molecular weight, atomic composition, and percent composition. Essential for chemistry students, laboratory professionals, and researchers preparing solutions and performing stoichiometric calculations.
Supported Elements:
H, C, N, O, P, S, F, Cl, Br, I, Na, K, Ca, Mg, Fe, Zn, Cu
Related Tools
Discover more tools that might help you
Professional Molecular Weight Calculator Features
Comprehensive molecular weight calculator with advanced features designed for chemistry students, laboratory professionals, and research scientists
Calculate molecular weight in seconds
Enter a chemical formula and instantly get the molecular weight with complete composition analysis and educational breakdown
Enter any chemical formula (e.g., H2O, C6H12O6, Ca(OH)2) with automatic element recognition
Get instant molecular weight calculation in g/mol with IUPAC standard atomic weights
View detailed composition breakdown with atom counts and atomic masses for each element
See percent composition showing the percentage contribution of each element
Use results for solution preparation, stoichiometry, and laboratory calculations
Save frequently used formulas for quick reference in future calculations
Explore Essential Chemistry Calculators
Discover powerful calculation tools for molecular weight, molarity, dilutions, buffer preparation, and unit conversions. Enhance your laboratory workflow with our integrated chemistry calculator platform.
Buffer Calculator
Calculate buffer pH and composition using Henderson-Hasselbalch equation. Prepare buffers with precise pH requirements for biochemistry applications.
Unit Converter
Convert between chemistry measurement units safely and accurately. Essential for standardizing laboratory protocols and international collaboration.
Molecular Weight Calculator
Calculate molecular weight and molar mass from chemical formulas. Analyze percent composition and atomic breakdown for all compounds.
Molarity Calculator
Calculate molecular concentration, mass, volume, and moles with precision. Essential for solution preparation and chemistry experiments.
Dilution Calculator
Calculate C1V1=C2V2 dilutions instantly. Determine stock volumes, final concentrations, and dilution factors for laboratory solution preparations.
From chemical formula to complete molecular analysis in seconds
See how our calculator provides instant, accurate molecular weight calculations with detailed composition analysis for all your chemistry needs
What Chemistry Students & Laboratory Professionals Say
Feedback from chemistry professors, laboratory technicians, research scientists, and students
"Excellent tool for teaching molecular weight calculations! Students can instantly verify their manual calculations and understand element composition. The educational explanations make it perfect for chemistry courses. Highly recommended!"
Dr. Elena Rodriguez
Chemistry Professor
"We use this daily for preparing reagents and verifying compound purities. The accurate IUPAC atomic weights and composition analysis save us time and reduce calculation errors. Fast and reliable!"
Marcus Chen
Analytical Chemistry Technician
"Essential for formulation work! The molecular weight calculator with percent composition helps us quickly analyze drug compound structures. The saved formulas feature is invaluable for repeated analysis."
Dr. Sarah Williams
Pharmaceutical Research Scientist
"This calculator helped me ace my chemistry exams! Understanding the atomic composition breakdown made molecular weight calculations click. The learning mode is fantastic for concepts."
Alex Rodriguez
Chemistry Undergraduate Student
"Accurate and dependable. We rely on this calculator for QC verifications and reagent calculations. The IUPAC accuracy ensures our results meet pharmaceutical standards every time."
Dr. Lisa Patterson
Laboratory Quality Manager
Frequently Asked Questions About Molecular Weight Calculations
Common questions about calculating molecular weight, molar mass, and chemical formula analysis
Ready to calculate molecular weight?
Use our free molecular weight calculator for instant, accurate molar mass calculations with complete composition analysis and educational resources