Mexico

BAC Calculator for Mexico – Alcohol Limit & DUI Rules 🇲🇽

Driving in Mexico? The federal alcohol limit is 0.08% BAC (0.8 g/L), but Mexico City (CDMX) and many states apply a stricter 0.04% (0.4 g/L), with zero tolerance for taxi, bus, and commercial drivers. Our BAC calculator estimates your blood alcohol and when you'll be safe to drive.

0.08% BAC Drink-drive limit

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ℹ️ Information

CONTEXT
🌎 Country
Show results in
ABOUT YOU
Sex
⚖️ Weight

lbs

⏱️ Start time of drinking (optional) Time of your first drink (not required)

🕒

⏳ Or: hours ago —
0h6h12h18h24h

🍹🍸🍺 Drinks

Drink {{index+1}} 🍷

%

Maximum number of drinks reached.

The results will show up here...
📈 Results
Current BACPeak BAC {{ initialSobriety }}{{ unitSign }} Measured for Now · Drink-drive limit {{ countryLimit }}{{ unitSign }}
Status:
Over the legal limit – driving is illegal. Approaching the limit – driving not advised. Likely under the Mexican federal limit, but drive with care (and check the local state rule).
{{ legalLimitTimeLabel }}

Drink-drive limit

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Based on Mexican federal law (0.08%) ·

Elimination rate

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Typical average

Standard Drinks

{{ standardDrinks }}🍺
Approx. consumed

Pure Alcohol

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Pure alcohol consumed

Pure Alcohol (g)

{{ alcoholGrams }} g
Total ethanol consumed

Calories

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

Time over limit

{{ timeOverLimit || '0m' }}
Estimated duration above the legal drink driving 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:
Over the legal limit – driving is illegal. Approaching the limit – driving not advised. Likely under the Mexican federal limit, but drive with care (and check the local state rule).
{{ legalLimitTimeLabel }}
{{ afterLabel }} {{ $t('unit.' + units) }} Status
{{ result.time }} {{ result.drunkenness }}
  • Likely under the Mexican federal limit, but drive with care (and check the local state rule).
  • Approaching the limit – driving not advised.
  • Over the legal limit – driving is illegal.
Create a pop-up notification
📉 Sobriety Over Time
👮 Health impact and legal consequences
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{{ legalLimitTimeLabel }} Sober in: {{ sobrietyTime }} Peak BAC: {{ peakBAC }}

💡 Advice: drink water, eat, and avoid driving until you are well under the local Mexican limit (0.4 g/L in CDMX, 0.8 g/L federal) and ideally fully sober.

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

About results ▼

📊 Current BAC

Your Current BAC shows your estimated blood alcohol concentration right now, displayed as a percentage or in promille (‰). This reflects how much alcohol is in your bloodstream and is used to assess impairment.

🚔 Legal limit

In Mexico, the federal alcohol limit is 0.08% BAC (0.8 g/L). Mexico City and several states apply a stricter 0.04% (0.4 g/L), and commercial drivers (taxi, bus, freight) face 0.0% zero tolerance. Exceeding any of these triggers a mandatory 20–36 hour arrest in CDMX ("El Torito") and equivalent sanctions in other states.

🧪 Elimination rate

Your body metabolises alcohol at a steady rate — typically ~0.015% BAC per hour (or ~0.15 ‰/h). Nothing — not coffee, not a cold shower, not exercise — speeds this up.

🍺 Standard Drinks

One Mexican standard drink ≈ 13g of pure alcohol (Secretaría de Salud) — a 330ml Corona/Modelo at 4.5%, a 150ml glass of wine at 12%, or a 45ml shot of tequila at 38%.

🧴 Pure Alcohol

The total amount of pure alcohol (ethanol) your body has absorbed, in grams. Useful for comparing against weekly limits — WHO recommends no more than 10 standard drinks per week.

⏱ Time vs. Sobriety Table

Shows how your BAC is expected to change with each passing hour — and when a Start time of drinking is provided, it aligns these estimates with the exact time of day. Particularly useful for the morning-after check: see at what clock time your BAC drops below 0.04% / 0.08%.

📈 Sobriety Over Time Graph

A visual line chart plotting your estimated BAC decline over hours. Helps you see when your BAC drops below the legal limit and then to zero.

😵 How Alcohol Affects You

This reference table shows ranges of BAC and typical effects on your body and behaviour — from mild alertness changes to severe impairment.

⏰ Legal limit reached in / Sober in / Peak BAC

These summaries give quick key estimates:

  • Legal limit reached in: the time until your BAC likely falls below the Mexican legal limit.

  • Sober in: total time until BAC reaches ~0.00%.

  • Peak BAC: the highest BAC value recorded in the session.

Mexico Drink Drive Limit & Alcohol Calculator Data

Five 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.
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.
Time
The time of your first drink shows how BAC changes hour by hour and when you'll be sober again.
LIMITS NEARBY

BAC limits in neighboring countries

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

US

United States

0.08%
Relaxed
CA

Canada

0.08%
Relaxed
GT

Guatemala

0.08%
Relaxed
BZ

Belize

0.08%
Relaxed

Alcohol Limit Mexico: 0.08% Federal & 0.04% CDMX

Mexico's legal drink driving limits (blood alcohol)

Regular drivers (federal)
0.08%
Relaxed
CDMX & stricter states
0.04%
Strict
Taxi / bus / commercial drivers
0.0%
Zero tolerance
The federal limit in Mexico is 0.08% BAC (0.8 g/L), with CDMX and several states applying a stricter 0.04% (0.4 g/L). Commercial drivers (taxi, bus, freight, emergency) face absolute zero tolerance. The CDMX "Conduce sin Alcohol" / "El Torito" programme applies a mandatory 20–36 hour administrative arrest with no fine alternative.

Mexico Drink Driving Penalties & Alcohol Checkpoints

Consequences of exceeding Mexico's alcohol limit (state-dependent — CDMX shown)

0.4 – 0.79 g/L (CDMX / strict-state threshold)
  • Administrative arrest 20–36 h at El Torito (no fine substitution)
  • Vehicle impounded to corralón (additional tow + storage fees)
  • State fine ~3,000–15,000 MXN; licence points and possible suspension
0.8 g/L+ (federal threshold; accidents = criminal)
  • 20–36 h non-commutable arrest + larger fine
  • Causing injury or death moves the case to criminal court — prison time possible
  • Long-term licence suspension; civil damages and insurance recovery against the driver

Source: Reglamento de Tránsito de la CDMX; Programa "Conduce sin Alcohol"; Ley General de Vías de Comunicación.

Responsible Drinking & Mexico''s Alcohol Limits

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
Even small amounts of alcohol impair reaction time. If in doubt, call a taxi, an Uber, or stay overnight.

Source: WHO; Secretaría de Salud (México); Reglamento de Tránsito de la CDMX.

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