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Density and Mass

g/LtoSG

Convert grams per litre (g/L) to specific gravity (water) (SG).

Factor1 g/L = 0.001 SG

Converter

g/L

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.85SG

Rendered to 6 significant figures.

Formula

Formula
SG = g/L × 0.001

Multiply any value in grams per litre by 0.001 to obtain the value in specific gravity (water).

Worked example

Convert 850 g/L to SG.

  1. 01Start with 850 g/L.
  2. 02Multiply by the conversion factor: 850 × 0.001 = 0.85 SG.
Result850 g/L = 0.85 SG

Conversion table

g/LSG
10.001
20.002
50.005
100.01
200.02
500.05
1000.1
2000.2
5000.5
10001

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from g/L to SG?
1 g/L equals 0.001 SG. To convert, multiply the value in grams per litre by 0.001.
How do I convert 1 g/L to SG?
1 g/L = 0.001 SG. For any value, multiply by 0.001.
How do I convert SG back to g/L?
Divide by the same factor — or equivalently, multiply by 1000. So 1 SG = 1000 g/L.
When would I need to convert gram per litre to specific gravity (water)?
Density conversions are critical for fluid property datasheets, hydraulic head calculations, and reconciling lab measurements (often g/cm³) with process simulator inputs (kg/m³).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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