When choosing a disposable vape, you may notice nicotine strength labeled in two different ways: mg/ml and percentage (%). This often confuses users—does 20mg/ml mean the same as 2%?

This guide explains how nicotine strength is measured, provides a simple conversion chart, and shows why it matters for your vape choice.

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🔬 Nicotine Strength Basics

Nicotine strength tells you how much nicotine is present in each milliliter of e-liquid. It can be written as:

• mg/ml → milligrams of nicotine per milliliter
• % (percentage) → grams of nicotine per 100ml of e-liquid

👉 Quick formula:

% × 10 = mg/ml

For example:

• 1% = 10mg/ml
• 2% = 20mg/ml
• 5% = 50mg/ml

👉 Related reading: Nicotine Strength Explained: What It Means for Disposable Vapes

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📊 Nicotine Conversion Chart

Here’s a simple chart comparing % to mg/ml, with examples of where they are commonly found:

Percentage	mg/ml Equivalent	Common in Market	Example Device
1%	10mg/ml	Asia, EU (low strength)	Airis Aura
2%	20mg/ml	EU TPD legal max	Airis PuriPod SE
3%	30mg/ml	US mid-strength	Airis PuriPod i5
5%	50mg/ml	US, Southeast Asia	Airis Neo-P40000

👉 Related reading: 1% vs 2% vs 5%: The Ultimate Nicotine Strength Guide

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🌍 Why the Conversion Matters

• Cross-market clarity: A product labeled 20mg/ml in Europe is the same as 2%.
• Consumer confidence: Prevents confusion when shopping internationally.
• Regulatory awareness:
  • EU law (TPD) limits nicotine to 2% (20mg/ml)
  • US & Southeast Asia allow up to 5% (50mg/ml)

👉 External reference: EU Tobacco Products Directive
👉 External reference: FDA ENDS Guidance

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👥 Practical Tips for Vapers

• Beginners: Start at 1% or 2% to avoid a harsh throat hit.
• Heavy smokers: 5% (50mg/ml) provides stronger satisfaction.
• Flavor seekers: Lower nicotine lets flavor shine without overpowering buzz.

💡 “In our consumer tests, users who enjoyed social vaping preferred 1–2%, while heavy smokers transitioning from cigarettes reported higher satisfaction with 5%.” — Airis R&D Team

👉 Related reading: How to Choose the Right Nicotine Strength

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🚭 Nicotine Conversion & Quitting Smoking

Many smokers use conversion knowledge to step down gradually:

• Start at 5% (50mg/ml) to manage cravings
• Move to 2% (20mg/ml) after 2–3 months
• Transition to 1% (10mg/ml) for long-term maintenance

👉 Related reading: Step-Down Nicotine Guide for Quitting Smoking

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✅ Key Takeaways

• Nicotine strength is expressed as mg/ml or %, and they are directly convertible.
• Formula: % × 10 = mg/ml
• Regulations matter: EU max 2%, US & Asia up to 5%
• Conversion charts help vapers choose wisely across different markets

👉 Next: Nicotine Strength Comparison: 1% vs 2% vs 5%

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❓ FAQ: Nicotine Conversion

Q1: Is 20mg/ml the same as 2%?
Yes. 20mg/ml equals 2% nicotine strength.

Q2: Why do some vapes use % while others use mg/ml?
It depends on regional labeling standards—Europe prefers %, while the US often uses mg/ml.

Q3: What’s the highest nicotine strength allowed in Europe?
The EU TPD law caps it at 2% (20mg/ml).

Q4: Is 50mg/ml safe for beginners?
No. 50mg/ml (5%) is very strong and mainly recommended for heavy smokers.

👉 Related reading: Best 5% Disposable Vapes in 2025