Concentration / percent / ratio converter
Concentration convention converter (USP): ratio 1:X, percent w/v, and mg/mL expressed in all three forms (1% = 10 mg/mL; 1:1000 = 1 mg/mL).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Enter as
- Ratio 1:X
- Value
- 1000
Result: 1:1000 = 1 mg/mL = 0.1% w/v.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Enter as
- Value
How this is calculated
USP concentration conventions: 1% w/v = 10 mg/mL; ratio 1:X (g per X mL) -> mg/mL = 1000/X. Pure deterministic conversion.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.