Concentration Converter
Convert mass concentration between g/L, mg/L, mg/mL, µg/mL, kg/m³, and %(w/v).
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Enter a mass concentration value and choose a from/to unit to convert between g/L, mg/L, and %(w/v).
Your result
1,000
Converted value
AI explanation
Formula
Converted value = amount × (from-unit-to-g/L factor) ÷ (to-unit-to-g/L factor)Worked example
1 g/L to mg/L
| Field | Value |
|---|---|
| Amount | 1 |
| From unit | g/L |
| To unit | mg/L |
| Converted value | 1000 |
Assumptions
- "%(w/v)" is defined as grams of solute per 100mL of solution (1% w/v = 10 g/L) — a different quantity from %(w/w), which is a mass-to-mass ratio and depends on the solution's density.
- Converts mass-concentration units only — for molar concentration (mol/L), use the Molarity Converter instead.
Frequently asked questions
What does %(w/v) mean?
"Weight per volume" percent — grams of solute per 100mL of solution. It's common in pharmaceutical and lab contexts (e.g. a "0.9% saline" solution is 0.9 g of salt per 100mL, or 9 g/L).
Is %(w/v) the same as %(w/w)?
No — %(w/v) is mass of solute per volume of solution, while %(w/w) is mass of solute per mass of solution. They're only numerically equal when the solution's density is exactly 1 g/mL (approximately true for dilute aqueous solutions, but not in general).
How do I convert this to a molar concentration?
Divide the mass concentration (g/L) by the substance's molar mass (g/mol, from the Molecular Weight Calculator) to get molarity (mol/L).