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Insulin Unit Converter (µIU/mL ↔ pmol/L)

· Last updated：2026-08-13

This tool is for informational purposes only and does not constitute medical, financial, or legal advice; consult a qualified professional for advice.

Convert serum/plasma insulin between µIU/mL and pmol/L. Factor 6.945 (WHO 1st IR 83/500, specific activity ~24 IU/nmol). Derived from WHO 83/500, Young 1987, StatPearls, Matthews 1985. Not medical advice.

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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 serum or plasma insulin values between µIU/mL and pmol/L using the factor 6.945, with adjustable results from 0 to 8 decimal places. This calculator is for unit conversion only and is not medical advice.

When to use

  • Convert a laboratory insulin result from µIU/mL to pmol/L for SI-unit reporting.
  • Convert an insulin value from pmol/L back to µIU/mL for comparison with conventional results.
  • Standardize insulin values when reviewing HOMA-IR or insulin-related laboratory information.

How it works

  1. 1Enter the insulin value in the Value field.
  2. 2Select the input unit as µIU/mL or pmol/L.
  3. 3Select the target unit for the converted result.
  4. 4Choose the number of decimal places, then review the JSON result and conversion method.

Use cases

  • Laboratory staff can convert reported insulin measurements between conventional and SI units.
  • Clinicians and researchers can align insulin values when reviewing HOMA-IR-related data.
  • Students and health professionals can verify manual insulin unit calculations.

Examples

1. Convert fasting insulin to pmol/L

Endocrinology researcher

Background

A research worksheet records fasting insulin as 15 µIU/mL, while the comparison dataset uses pmol/L.

Problem

The value needs to be converted without changing the underlying measurement.

How to use

Enter 15 as the value, select µIU/mL as the source unit, select pmol/L as the target unit, and keep Decimal Places at 2.

value: 15; sourceUnit: µIU/mL; targetUnit: pmol/L; decimalPlaces: 2

Outcome

The converter returns 104.18 pmol/L using the formula pmol/L = µIU/mL × 6.945.

2. Convert pmol/L to µIU/mL

Laboratory student

Background

A laboratory result lists insulin as 200 pmol/L, but the reference material uses µIU/mL.

Problem

The reported value must be expressed in the conventional insulin unit.

How to use

Enter 200 as the value, select pmol/L as the source unit, select µIU/mL as the target unit, and set Decimal Places to 2.

FAQ

What units does this converter support?

It converts insulin between µIU/mL and pmol/L in either direction.

What conversion factor does it use?

It uses 6.945: pmol/L = µIU/mL × 6.945, and µIU/mL = pmol/L ÷ 6.945.

Can I control the number of decimal places?

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

Does the result provide a medical diagnosis?

No. The result is a unit conversion and is not medical advice.

What information is included in the JSON result?

The result includes the input units, conversion factor, converted value, category, formula, and model reference.

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value: 200; sourceUnit: pmol/L; targetUnit: µIU/mL; decimalPlaces: 2

Outcome

The converter returns 28.80 µIU/mL using the formula µIU/mL = pmol/L ÷ 6.945.