Mass per volume density.
Milligrams per Liter to Drams per Liter Converter — mg/L to dr/L
Convert Milligram per Liter (mg/L) to Dram per Liter (dr/L) using the exact conversion factor (1 milligram per liter = 0.0005643834 dram per liter). See the formula, worked examples, conversion table, and common uses.
Milligrams per Liter to Drams per Liter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 0.001 / 1.771845195.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Liter to Drams per Liter
Milligram per Liter and Dram per Liter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Milligram per Liter is most often used for drinking-water quality standards and contaminant limits.
Formula
drams per liter = milligrams per liter × 0.000564383391193
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per liter equals 0.001 base units, and 1 dram per liter equals 1.77184519531 base units, so dividing one by the other gives the direct milligram per liter-to-dram per liter factor of 0.000564383391193.
Simple example
1 mg/L × 0.0005643833912 = 0.0005643834 dr/L
1 milligram per liter = 0.0005643834 drams per liter.
Real-world example
1,000 mg/L × 0.0005643833912 = 0.5643833912 dr/L
1,000 milligrams per liter = 0.5643833912 drams per liter.
Conversion table
| Milligram per Liter (mg/L) | Dram per Liter (dr/L) |
|---|---|
| 0.1 mg/L | 0.0000564383 dr/L |
| 1 mg/L | 0.0005643834 dr/L |
| 10 mg/L | 0.0056438339 dr/L |
| 100 mg/L | 0.0564383391 dr/L |
| 1,000 mg/L | 0.5643833912 dr/L |
| 10,000 mg/L | 5.643833912 dr/L |
Reverse conversion: Dram per Liter to Milligram per Liter
0.0005643834 dr/L × 1771.845195 = 1.000000016 mg/L
0.0005643834 drams per liter = 1.000000016 milligrams per liter.
milligrams per liter = drams per liter × 1771.84519531
For a page dedicated to this direction, see Dram per Liter to Milligram per Liter.
Understanding the Milligram per Liter
Milligram per Liter (mg/L) measures mass concentration. One milligram of a substance per liter of solution — for dilute water-based solutions, numerically almost identical to parts per million (ppm). It is classified as a metric derived concentration unit.
Where it's used: The standard unit for drinking-water and environmental contaminant limits worldwide (EPA, WHO)
mg/L vs. g/L. Both are metric mass-concentration units; 1,000 mg/L equals 1 g/L. mg/L is used for dilute concentrations (drinking water, blood tests), while g/L is more common for higher concentrations.
Uses of the Milligram per Liter today
- Drinking-water quality standards and contaminant limits
- Blood and serum concentration reporting in clinical medicine
- Environmental and wastewater testing
Understanding the Dram per Liter (dr/L)
Mass per volume density.
Milligram per Liter — sources
- US EPA — National Primary Drinking Water Regulations — Contaminant limits are set and reported in mg/L.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per liter are in 1 milligram per liter?
1 milligram per liter equals 0.0005643834 drams per liter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per liter to dram per liter?
Multiply the milligram per liter value by 0.0005643833912. The converter above does this instantly to whatever precision you set.
How do I convert dram per liter back to milligram per liter?
Use the reverse factor: 1 dram per liter equals 1,771.845195 milligrams per liter. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per liter?
Milligram per Liter (mg/L) measures mass concentration. One milligram of a substance per liter of solution — for dilute water-based solutions, numerically almost identical to parts per million (ppm). It is classified as a metric derived concentration unit.
What is a dram per liter?
Dram per Liter (dr/L) is a unit of density.
Is the milligram per liter to dram per liter conversion exact?
Yes. Both milligram per liter and dram per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.0005643833912 used above is exact to as many digits as you choose to display.
What is the difference between mg/l vs. g/l?
Both are metric mass-concentration units; 1,000 mg/L equals 1 g/L. mg/L is used for dilute concentrations (drinking water, blood tests), while g/L is more common for higher concentrations.
Where is the milligram per liter still used today?
The standard unit for drinking-water and environmental contaminant limits worldwide (EPA, WHO)