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title: "Blood Glucose Converter | Numequo"
description: "Convert blood glucose readings between mg/dL and mmol/L. Get a clear result with the formula, examples and useful explanations."
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[Numequo](https://www.numequo.com/) › [Health](https://www.numequo.com/health/) › [Diabetes and blood glucose](https://www.numequo.com/health/diabetes-blood-glucose/)

# Blood Glucose Converter

Enter a glucose reading and choose its unit. The converter changes the unit without interpreting the medical result.

## Input data

- **Blood glucose value** - type: number; default: 100; min: 0; max: 5000; step: 0.01
- **Conversion direction** - type: choice; default: mg-to-mmol; options: mg/dL → mmol/L, mmol/L → mg/dL

## How it works

mmol/L = mg/dL ÷ 18.0182. In the other direction, mg/dL = mmol/L × 18.0182.

> This estimate is educational and is not medical advice.

## Quick examples

- **100 mg/dL** - Blood glucose value: 100, Conversion direction: mg-to-mmol
- **5.5 mmol/L** - Blood glucose value: 5.5, Conversion direction: mmol-to-mg
- **180 mg/dL** - Blood glucose value: 180, Conversion direction: mg-to-mmol

## Understanding your result

The displayed number is the same glucose concentration expressed in another unit. It does not classify the reading because interpretation depends on fasting status, timing, testing method and medical context.

Last verified: 29 September 2026 (2026-09-29)

## Sources

- <a href="https://diabetesjournals.org/care/article-abstract/46/10/e151/153425" rel="nofollow">ADA laboratory analysis guidelines</a>

## Frequently asked questions

### How do I convert mg/dL to mmol/L?

Divide the mg/dL value by 18.0182.

### How do I convert mmol/L to mg/dL?

Multiply the mmol/L value by 18.0182.

### Does the converter diagnose diabetes?

No. It converts units only and does not interpret or diagnose a laboratory result.

### Why do glucose meters use different units?

Countries and laboratories may report glucose as mass concentration in mg/dL or molar concentration in mmol/L.

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- [Ideal Weight Calculator](https://www.numequo.com/health/body-metrics/ideal-weight-calculator/) - Compare four common height-based reference formulas.

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