Thailand

AI Blood Alcohol Calculator – Thailand 0.05% Limit & Sober Time 🇹🇭

Driving in Thailand? Our AI estimates your blood alcohol content from your weight, drinks, and food — so you know when you're back under the 0.05% (50mg%) limit and when you'll be sober again.

0.5 ‰ Drink-drive limit
Use standard Calculator FAQ
  • Instant BAC estimate
  • Sobriety timeline
  • Limits for 40+ countries

ℹ️ Information

CONTEXT
🌎 Country
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ABOUT YOU
Sex
Weight

Age

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Food intake

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🍹🍸🍺 Drinks

Drink {{index+1}} 🍷

%

Maximum number of drinks reached.

Tries left:

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📈 Results

Current BACPeak BAC {{ initialSobriety }}{{ unitSign }} Measured for Now · Drink-drive limit {{ countryLimit }}{{ unitSign }}
Status:
Above the Thai limit – driving now is a criminal offence. Approaching the 0.05% Thai limit – do not drive. Below the 0.05% Thai limit — but the only fully safe option before driving is zero.
{{ legalLimitTimeLabel }}

Current BAC

{{ initialSobriety }}{{ unitSign }}
Measured for Now

Drink-drive limit

{{ countryLimit }}{{ unitSign }}
Based on Thai law (0.05% / 50mg%) ·

Elimination rate

{{ decayRateDisplay }}{{ unitSign }} / h
Typical average

Standard Drinks

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Approx. consumed

Pure Alcohol (g)

{{ alcoholGrams }} g
Total ethanol consumed

Calories

{{ calories }} kcal
From alcohol only — mixers add more

Time over limit

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Estimated duration above the 0.05% Thai limit
For your own safety, we recommend using a rate no higher than the average.
Current BACPeak BAC {{ initialSobriety }}{{ unitSign }} Measured for Now · Drink-drive limit {{ countryLimit }}{{ unitSign }}
Status:
Above the Thai limit – driving now is a criminal offence. Approaching the 0.05% Thai limit – do not drive. Below the 0.05% Thai limit — but the only fully safe option before driving is zero.
{{ legalLimitTimeLabel }}
{{ afterLabel }} {{ $t('unit.' + units) }} Status
{{ result.time }} {{ result.drunkenness }}
  • Below the 0.05% Thai limit — but the only fully safe option before driving is zero.
  • Approaching the 0.05% Thai limit – do not drive.
  • Above the Thai limit – driving now is a criminal offence.
📉 Sobriety Over Time
👮 Health impact and legal consequences
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🤖 AI Analysis

📝 AI Notes

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Attention‼️ The results are only approximate, so make sure you are sober before driving.

AI Drink Drive Calculator & Alcohol Limit Thailand

The AI BAC Calculator is tailored for users driving in Thailand to estimate blood alcohol content (BAC) more precisely against the 0.05% (50mg%) limit — and the stricter 0.02% that applies to new and young drivers. It considers individual traits — weight, gender, age, exact alcohol intake, and food — to offer a smarter assessment of when you'll be back under the limit and safe to drive.

Why is the AI more accurate than a basic BAC calculator?

  • Personalisation: Generic formulas treat every drinker the same. The AI adjusts to your body and habits for a realistic BAC estimate against the Thai 0.05% threshold.
  • Data-driven learning: The AI leverages large datasets of real BAC measurements and physiological studies to refine accuracy over time.
  • Complex factor handling: Food intake, drinking pace, physical activity, and even time of day all influence BAC — the AI accounts for them.
  • Practical recommendations: Beyond numbers, you get a clear answer on when it's safe to drive in Thailand, your morning-after risk, and how much buffer time you should add to account for individual variation.

This tool helps promote responsible decisions aligned with Thai law — especially valuable for tourists and expats. Remember that police run frequent roadside breath tests (especially during Songkran and New Year), refusing the test counts as guilt, and tourists on a foreign licence face the same penalties as Thai nationals. If you plan to drive, the safe count is zero.

Thailand Drink Driving Limit & Alcohol Calculator Data

Seven factors that determine your result

Weight
Body weight determines how alcohol distributes in the body — more weight means a lower blood alcohol concentration.
Sex
Men and women metabolise alcohol at different rates because of differences in body water content.
Age
Body water content declines with age, so the same amount of alcohol pushes peak BAC higher.
Amount
The amount of pure alcohol consumed is the main factor that determines your BAC result.
Strength
A higher strength (%) means more ethanol in the same drink serving.
Food
Food in your stomach slows alcohol absorption — drinking on an empty stomach can nearly double the peak BAC.
Time
The time of your first drink shows how BAC changes hour by hour and when you'll be sober again.

How much does Thailand drink?

Alcohol consumption per adult, per year

7.6L

litres of pure alcohol per adult (15+), per year

Per adult, that is roughly:

461 beers ≈ 9/week
422 glasses of wine ≈ 8/week
475 shots ≈ 9/week
7.6 L
0.0 L Ø 3.1 7.6 L

142% above the regional average

Ranks #1 of 10 in South-East Asia Ranks #56 of 188 in the World Average in South-East Asia: 3.1 L

How neighbours compare

#1 Laos 11.2L #1 Western Pacific
#2 Vietnam 10.7L #3 Western Pacific
#3 Thailand 7.6L #1 South-East Asia
#4 Cambodia 5.4L #9 Western Pacific
#5 Myanmar 1.9L #7 South-East Asia
#6 Malaysia 0.8L #20 Western Pacific
LIMITS NEARBY

BAC limits in neighboring countries

Explore the legal blood alcohol concentration (BAC) limits for drivers in nearby countries.

MY

Malaysia

50mg/100 ml
Moderate
LA

Laos

50mg/100 ml
Moderate
KH

Cambodia

50mg/100 ml
Moderate
MM

Myanmar

80mg/100 ml
Relaxed
VN

Vietnam

0mg/100 ml
Zero tolerance

Alcohol Limit Thailand: 0.05% (50mg%) — 0.02% for New Drivers

Legal drink driving limits for Thailand

General drivers (licence over 5 yrs)
0.05%
Moderate
Under 20 / new & provisional licence
0.02%
Strict
Most Thai drivers must stay under 0.05% (50mg of alcohol per 100ml of blood). A stricter 0.02% (20mg%) limit applies to drivers under 20, provisional or under-5-year licence holders, and unlicensed or suspended drivers. Exceeding the limit carries up to 1 year in jail, a ฿5,000–฿20,000 fine, and a licence suspension of at least 6 months. Refusing the test is treated as an admission of guilt.

Thailand Drink Driving Penalties & Alcohol Limit

Consequences of drink driving in Thailand by severity

Over the limit (0.05% / 0.02%)
  • Up to 1 year jail
  • ฿5,000–฿20,000 fine
  • Licence suspension from 6 months
Causing injury or death
  • 1–10 years jail
  • Up to ฿200,000 fine
  • Licence revoked

Source: Thailand Land Traffic Act (พระราชบัญญัติจราจรทางบก); Royal Thai Police.

Responsible Drinking & the 0.05% Limit in Thailand

Practical tips for safer drinking

Pace yourself
Stick to the "one drink per hour" rule – your liver needs time to process alcohol.
Eat before and while drinking
A solid meal slows alcohol absorption – an empty stomach raises BAC faster.
Drink water
After each alcoholic drink, have a glass of water – it reduces dehydration and health risks.
Don't drive
The Thai limit is 0.05% (just 0.02% for new drivers). Use Grab, a taxi, or a tuk-tuk, or stay overnight.

Source: WHO; Thailand Land Traffic Act; Royal Thai Police.

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