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What Is a Healthy A1C Level?

⚙️ Tool⏱ 1 min read

A1C Calculator

Convert your estimated average glucose (eAG) to A1C percentage, or enter an A1C value to see the corresponding average glucose.

A1C Result: --

A1C Reference Guide

Normal:Below 5.7%
Prediabetes:5.7% - 6.4%
Diabetes:6.5% or higher

What Is a Healthy A1C Level?

A healthy A1C level below 5.7% is considered normal for most adults.

Normal A1C Levels Chart

A1C CategoryPercentageWhat It Means
NormalBelow 5.7%Healthy
Prediabetes5.7% - 6.4%Higher risk
Diabetes6.5% or higherDiagnosis

Healthy A1C Targets by Age

How to Lower A1C Naturally

1. Adopt a low-glycemic diet 2. Exercise regularly 3. Stay hydrated 4. Get quality sleep

Frequently Asked Questions

For most adults aged 40, a healthy A1C is below 5.7%.

Yes, significant lifestyle changes can lower A1C by 0.5-1.5% within 3 months.

An A1C of 5.8% falls in the prediabetes range (5.7-6.4%). It is not diabetes but indicates elevated risk.

Combine a low-carbohydrate diet with daily brisk walking.

No, A1C measures average blood sugar over months and is not affected by fasting.

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