Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Health
Input types: number, select
Output type: json
Sample coverage: 4
API ready: Yes

Overview

Convert hemoglobin values between g/dL, g/L, and mmol/L using the IFCC/IUPAC factor of 0.6206 for g/dL to mmol/L and a factor of 10 for g/dL to g/L. Choose the source and target units, set decimal places, and receive the converted value as JSON.

When to use

Convert a laboratory hemoglobin result from g/dL to mmol/L for SI-unit reporting.
Translate g/L or mmol/L values into g/dL for comparison with another report.
Standardize hemoglobin values while controlling the number of displayed decimal places.

How it works

1Enter the hemoglobin value in the Value field.
2Select the input unit: g/dL, g/L, or mmol/L.
3Select the target unit and optionally choose between 0 and 8 decimal places.
4The tool applies the supported conversion factor and returns the result in JSON.

Use cases

Laboratory and hematology workflows that require consistent hemoglobin units.
Clinical education and reference work involving g/dL, g/L, and mmol/L values.
Checking converted results when comparing reports that use different unit systems.

Examples

1. Convert a low-normal hemoglobin result

Clinical laboratory student

Background

A laboratory exercise uses a hemoglobin value of 12.0 g/dL, but the worksheet requires mmol/L.

Problem

The value must be converted accurately and rounded to two decimal places.

How to use

Enter 12 as the value, select g/dL as the source unit, select mmol/L as the target unit, and set Decimal Places to 2.

{"value":12,"sourceUnit":"gdl","targetUnit":"mmol","decimalPlaces":2}

Outcome

The converter returns 7.45 mmol/L using the method g/dL × 0.6206.

2. Convert an SI result to g/dL

Medical records reviewer

Background

A report lists hemoglobin as 11.2 mmol/L, while a comparison reference uses g/dL.

Problem

The SI-unit result needs to be expressed in g/dL without manually calculating the inverse factor.

How to use

Enter 11.2 as the value, select mmol/L as the source unit, select g/dL as the target unit, and set Decimal Places to 2.

FAQ

Which hemoglobin units does the converter support?

It converts between g/dL, g/L, and mmol/L.

What factor converts g/dL to mmol/L?

The converter uses 0.6206: mmol/L = g/dL × 0.6206.

How do I convert g/dL to g/L?

Multiply the g/dL value by 10.

Can I control the displayed precision?

Yes. Set Decimal Places from 0 to 8; the default is 2.

Is this converter medical advice?

No. It performs unit conversions only and is not medical advice.

{"value":11.2,"sourceUnit":"mmol","targetUnit":"gdl","decimalPlaces":2}

Hemoglobin Unit Converter (g/dL ↔ mmol/L ↔ g/L)

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Convert a low-normal hemoglobin result

2. Convert an SI result to g/dL

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