RevenueLab.fyi
Revenue Rex logo mark
🏃 Fitness & Health · Rex's Toolbox

A1C to Average Glucose Calculator

Convert HbA1c to estimated average glucose in mg/dL and mmol/L.

Revenue Rex peeking

Rex says

Same equations the textbooks use — just way less awkward. Pop in your stats and I'll tell you what the number actually means for you.

Try a scenario

Click to load — tweak from there.

Inputs

Result

Estimated average glucose (mg/dL)

154

Average glucose (mmol/L)

8.56

IFCC A1C (mmol/mol)

53

A1C implied by your meter average

6.99

Revenue Rex peeking

Psst — share this and help Rex grow

One click, a permanent link with your numbers baked in.

More fitness & health

How to use this

  1. 1Enter hba1c (%).
  2. 2Enter or your meter average (mg/dL).
  3. 3Read your estimated average glucose (mg/dl) on the right — it updates as you type.
  4. 4Hit Share to keep the scenario or send it to someone.

About this calculator

Translate an A1C percentage into estimated average glucose using the ADAG study equation, and go the other direction from a meter average back to a projected A1C.

FormulaeAG (mg/dL) = 28.7 × A1C − 46.7.

Worked example

Using the values the calculator loads with:

Inputs

  • HbA1c: 7 %
  • Or your meter average: 154 mg/dL

Results

  • Estimated average glucose (mg/dL): 154
  • Average glucose (mmol/L): 8.56
  • IFCC A1C (mmol/mol): 53
  • A1C implied by your meter average: 6.99

What each field means

Inputs

HbA1c (%)
The hba1c used in the calculation, measured in %. Starts at 7 % so you have a working example on load. Accepted range: 4–16 %.
Or your meter average (mg/dL)
The or your meter average used in the calculation, measured in mg/dL. Starts at 154 mg/dL so you have a working example on load.

Results

Estimated average glucose (mg/dL)
Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Average glucose (mmol/L)
Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
IFCC A1C (mmol/mol)
Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
A1C implied by your meter average
Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

Why doesn't my meter average match my A1C?

Meters sample when you test, which skews toward fasting and pre-meal values. A1C reflects all 24 hours, including post-meal peaks.

What A1C is diabetes?

6.5% or higher on two occasions; 5.7–6.4% is the prediabetes range. Diagnosis is your clinician's call.

Accuracy and limitations

  • Population formulas describe averages; individual bodies vary, especially at the extremes of height, age, or muscle mass.
  • Results do not account for medical conditions, medication, or pregnancy.
  • Use this as a directional reference, not a diagnosis — talk to a clinician before acting on it.

Cite this calculator

Writing about this topic? Grab a citation — every link helps keep these tools free.

APA
RevenueLab. (2026). A1C to Average Glucose Converter. Retrieved from https://www.revenuelab.fyi/toolbox/a1c-to-glucose
HTML
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/a1c-to-glucose" target="_blank" rel="noopener">A1C to Average Glucose Converter — RevenueLab</a> (2026).</p>
Markdown
Source: [A1C to Average Glucose Converter — RevenueLab](https://www.revenuelab.fyi/toolbox/a1c-to-glucose) (2026).
Advertisement