Free Molarity Calculator - Chemistry Made Easy
Calculate solution molarity, dilutions, and moles. Essential for chemistry labs, preparing solutions, and understanding concentration.
Quick Answer
Molarity = moles / liters. To make 1M NaCl (1L): dissolve 58.44g (1 mole) in water to make 1 liter total. Dilution formula: M1V1 = M2V2.
Key Facts about Molarity Calculator:
- M = moles / liters
- Grams = M × V × MW
- Dilution: M1V1 = M2V2
- 1 mole = 6.022 × 10²³ particles
- MW of water: 18 g/mol
Why Use Our Molarity Calculator?
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Molarity
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Dilutions
M1V1=M2V2 calculations.
Grams Needed
Mass for solutions.
Moles
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How to Molarity Calculator in 3 Easy Steps
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Frequently Asked Questions
Everything you need to know about our molarity calculator
What is molarity?
Moles of solute per liter of solution (mol/L)
Molarity (M) is moles of solute per liter of solution. A 1M solution has 1 mole of solute in 1 liter. Formula: M = moles / liters or M = grams / (MW × liters).
How do I calculate dilution?
M1V1 = M2V2 (concentration × volume before = after)
Use M1V1 = M2V2. If you need 500mL of 0.5M from 2M stock: 2 × V1 = 0.5 × 500, so V1 = 125mL stock + 375mL water.
How many grams to make 1M solution?
Grams = M × V(L) × Molecular Weight
Grams = Molarity × Volume (L) × Molecular Weight. For 1L of 1M NaCl (MW = 58.44): 1 × 1 × 58.44 = 58.44 grams.
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