Question: 1 molar equal to how much millimolar?
Answer: The answer is 1000. We assume you are converting between millimolar and molar. You can view more details on each measurement unit: millimolar or molar The SI derived unit for amount-of-substance concentration is the mole/cubic meter. 1 mole/cubic meter is equal to 1 millimolar, or 0.001 molar.