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Blood Sugar Converter

Unit Converter

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Reference Ranges

Normal Ranges

Fasting: 70-100 mg/dL 3.9-5.6 mmol/L
2hr After Meal: < 140 mg/dL < 7.8 mmol/L
Random: < 200 mg/dL < 11.1 mmol/L

Diabetic Ranges

Fasting: ≥ 126 mg/dL ≥ 7.0 mmol/L
2hr After Meal: ≥ 200 mg/dL ≥ 11.1 mmol/L
A1C: ≥ 6.5%

Quick Conversions

mg/dL mmol/L
543.0
703.9
1005.6
1407.8
18010.0
20011.1

Reading History

No readings recorded yet

Your blood sugar history will appear here

Analytics & Trends

Average Glucose

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mg/dL

Est. A1C

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Based on average

In Range

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Of readings

Trend

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Last 7 days

Glucose Trends

Pattern Analysis

Add more readings to see pattern analysis

Tips & Information

Best Testing Times

  • Before meals (fasting)
  • 2 hours after meals
  • Before bedtime
  • When feeling symptoms

Target Ranges

  • Fasting: 80-130 mg/dL
  • After meals: < 180 mg/dL
  • A1C: < 7% for most adults
  • Consult your doctor for personal targets

When to Seek Help

  • Blood sugar > 300 mg/dL
  • Blood sugar < 70 mg/dL with symptoms
  • Persistent high or low readings
  • Any concerning symptoms

Lifestyle Tips

  • Regular meal schedule
  • Stay hydrated
  • Exercise regularly
  • Monitor carbohydrate intake
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Simple, Accurate Conversions

Instantly convert blood sugar readings between mg/dL and mmol/L with full reliability – no need for calculators or manual formulas.

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Professional & Accessible Interface

Clear, modern design using accessible colours and large input fields, making it easy to use on desktop, tablet or mobile.

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Secure & Confidential

No sign-up required; all preferences are stored locally. Designed with UK GDPR best practices for data privacy.

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Supports Better Health Conversations

The ability to log notes and precise times helps both individuals and carers provide accurate information to GPs and nurses.

Blood Sugar Converter

Try Our Blood Sugar Converter

real testimonials

What They
Say About Our
Sugar Tools?

— Linda Walker
“The converter is very simple to use and makes it much easier for our team to record and check client’s blood sugar results, whether it’s mmol/L or mg/dL. The logbook and notes are perfect for our shift handovers.”
— Linda Walker
Norwich
— Michael Davies
“I’ve tried a few apps, but this is the best for tracking and converting my readings. I love that I can add whether I was fasting or had eaten and keep a quick history of all my tests.”
— Michael Davies
Cardiff
— Sophie Patel
“Having the converter and history in one place is a real help. I can quickly check the right units for different doctors and log results clearly for my patients. Highly recommended for anyone in care.”
— Sophie Patel
Birmingham
— James Murphy
“I’m not great with technology, but this tool is very straightforward and makes keeping track of my dad’s blood sugars so much less stressful. I especially appreciate the ability to make notes.”
— James Murphy
Liverpool
— Rebecca Turner
“The Blood Sugar Converter from Bondage Valley Care Agency UK gives us confidence that our team are logging results correctly and professionally. It works well on both computers and phones and the design is spot on for a care environment.”
— Rebecca Turner
London