OGTT 2-Hour Glucose unit converter

Convert OGTT 2-Hour glucose between mg/dL, mmol/L and g/L. Type in either box. The factors come from our catalog and are checked by code.

AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03

From

1 mg/dL = 0.0555 mmol/L. Nothing you type here leaves your browser.

The conversion

1 mg/dL = 0.05551 mmol/LFrom mg/dL to mmol/L: divide by 18.02. Back again: multiply by 18.02.
1 mg/dL = 0.01 g/LFrom mg/dL to g/L: divide by 100. Back again: multiply by 100.

Mass and molar units are linked by the molecular weight: 180.16 g/mol (D-glucose, C6H12O6 (PubChem CID 5793)). Source: PubChem, National Library of Medicine.

Common values

From zero to about twice the usual upper limit, plus the usual limits themselves.

OGTT 2-Hour Glucose values in mg/dL, mmol/L and g/L
mg/dL	mmol/L	g/L
50	2.8	0.5
100	5.6	1
139	7.7	1.39
140	7.8	1.4
150	8.3	1.5
200	11.1	2
250	13.9	2.5
300	16.7	3
350	19.4	3.5
400	22.2	4

Usual ranges in each unit

What labs print as the reference range, by who was tested. Sources for each range are on the OGTT 2-Hour Glucose page.

Usual ranges for OGTT 2-Hour Glucose in mg/dL, mmol/L and g/L
Who	mg/dL	mmol/L	g/L
Adults	up to 139	up to 7.7	up to 1.39
Women, pregnancy t2	up to 152	up to 8.4	up to 1.52
Women, pregnancy t3	up to 152	up to 8.4	up to 1.52