Normal Saline: 0.9% w/v (0.9 g NaCl per 100 mL)
Normal saline is 0.9 g of NaCl dissolved in 100 mL of water, producing an isotonic 0.9% w/v solution used in medicine worldwide.
How to use this tool
- Enter solute mass and solution volume in the fields above.
- Results update instantly as you type ā or click Calculate.
- Read your w/v percent and the full breakdown beneath it.
Normal saline (0.9% NaCl) is the most widely used IV fluid in medicine, and its concentration is calculated using the simple w/v percent formula.
Frequently asked questions
- What does w/v percent mean?
- Weight/volume percent (w/v %) is the mass of solute (g) per 100 mL of solution. A 5% NaCl solution has 5 g of NaCl in every 100 mL.
- How do I convert between ppm and g/L?
- 1 g/L = 1000 mg/L = 1000 ppm (in dilute aqueous solutions where 1 L ā 1 kg).