
ChemCalc - Mole Calculator
Moles, Mr & Equation Balancer
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Free
In-App Purchases
About
ChemCalc is the ultimate chemistry calculator built for students. Whether you're studying for GCSEs, A-Levels, or the IB Diploma, ChemCalc instantly solves the most time-consuming chemistry calculations so you can focus on understanding the concepts.
5 ESSENTIAL CALCULATORS IN ONE APP:
• Mass & Mr Calculator: Instantly calculate molar mass (Mr), mass, and moles using the interactive formula triangle with common compound shortcuts.
• Concentration Calculator: Work out molarity, volume, or moles with full, exam-style step-by-step working and revision tips.
• Gas Volume Calculator: Solve gas volume problems at room temperature and pressure (RTP) with clear visual guides.
• Reacting Masses (Pro): Calculate theoretical yields and exact reactant masses across balanced chemical equations. Essential for quantitative chemistry.
• Equation Balancer (Pro): Type in any chemical equation and get perfectly balanced stoichiometry in seconds.
WHY STUDENTS LOVE CHEMCALC:
Step-by-step working for every calculation, not just the answer
Interactive formula triangles that teach you the method
Built-in exam tips and revision guidance
Beautiful light and dark mode
Works completely offline, perfect for revision sessions
No ads on free features
ChemCalc is part of the Chemistry Made Easy ecosystem
Download now and make chemistry calculations effortless.
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What's New in ChemCalc
1.1
April 16, 2026
• New iOS Haptics: The calculator now features native haptic feedback for a premium feel (toggleable in the new Settings menu). • RTP vs STP: Added a new toggle to switch between Room Temperature & Pressure (24 dm³) and Standard Temperature & Pressure (22.4 dm³), perfect for both GCSE and IB students. • UI Polish: Fluid navigation animations, subscript formatting for balanced chemical equations (e.g., H₂O), and real-time Mr calculation badges. • Auto-formatting: Huge numbers now automatically format into readable scientific notation. • Resolves an issue with In-App Purchase validation and dark mode persistence.
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In-App Purchases
$1.99
ChemCalc Pro
Unlock 3 Pro calculators with step-by-step working




