Baseline legal BAC thresholds across Europe, the Americas, Asia, Oceania, and Africa — including every US state, Canadian province, and UK constituent country. This table is for reference only and does not constitute legal advice.
296
Jurisdictions
256
Indexable
290
Verified
296
With legislation
BAC Limits Around the World
Click any country to see details in the table below
Российская газета published Constitutional Court ruling No. 51-P discussing the note to Article 12.8 of the Code of Administrative Offences and the 0.16 mg/L breath / 0.3 g/L blood alcohol criteria. Accessed May 3, 2026.
Інструкція МВС/МОЗ № 1452/735, поточна редакція від 04.07.2025, states that alcohol intoxication is established when the test result is more than 0.2 per mille alcohol in blood. Accessed May 3, 2026.
Virgin Islands Police Department Office of Highway Safety. Impaired Driving page cites Title 20 V.I.C. § 493 and states the 0.08% alcohol-driving limit. Accessed May 2, 2026.
Kathmandu Valley Traffic Police Office. Violations and fines notice cites alcohol-consumption driving offenses under the Motor Vehicles and Transport Management Act. Accessed May 3, 2026.
Ministry of Transport of the Republic of Tajikistan. News update discusses liability for driving in a state of alcoholic intoxication causing death or serious harm. Accessed May 3, 2026.
WHO Global Status Report on Road Safety — Vanuatu. Accessed March 8, 2026.
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last verified: 2026-03-08
index
Legal limits are shown as educational context. They are not an assessment of your situation and must not be used to decide whether to drive.
Understanding BAC Limits: A Global Reference
Blood alcohol concentration limits are one of the most inconsistently reported numbers in public health law. The same legal threshold is quoted as 0.05%, 0.5 g/L, 50 mg/100 ml, or 0.5‰ depending on which country’s statute you are reading. Before you scan the jurisdiction table below, the short guide that follows explains how the units convert, how countries cluster into four broad regulatory tiers, why novice and commercial drivers face stricter numbers, and how breathalyzer readings relate to true blood alcohol.
Unit conversions: percent, per mille, g/L, mg/100 ml
BAC is a mass fraction — grams of ethanol per unit of blood — but different legal systems express it in different denominators. The United States statute uses percent weight-by-volume (%), where 0.08% means 0.08 grams of alcohol per 100 millilitres of blood. Most of Europe writes the same quantity in grams per litre (g/L) or per mille (‰, “per thousand”). Public-health agencies and laboratories often prefer milligrams per 100 millilitres (mg/100 ml), and Canadian Criminal Code provisions reference milligrams per 100 ml of blood explicitly. The numbers look different but describe the same physical concentration.
The conversions are strictly linear. A BAC of 0.08% (United States) equals 0.8 g/L, 80 mg/100 ml, and 0.8‰. A BAC of 0.05% (the dominant European standard) equals 0.5 g/L, 50 mg/100 ml, and 0.5‰. To convert percent to per mille, multiply by ten. To convert per mille to mg/100 ml, multiply by 100. Every row in the jurisdiction table below normalises to per mille internally, so values stay directly comparable across regions.
Breath alcohol concentration (BrAC) is a separate measurement entirely. Breath testers do not read blood — they read alveolar air — and convert using a partition ratio of 2,100 parts blood to 1 part breath. A BAC of 0.5‰ therefore corresponds to roughly 0.24 mg/L of breath alcohol. Germany’s 0.25 mg/L breath limit and the United Kingdom’s 35 µg/100 ml breath limit are both BrAC values — not BAC — and require the 2,100:1 conversion to compare with blood thresholds. The reason the United States fixed on percent and Europe on per mille is largely historical: American forensic toxicology standardised around weight-by-volume reporting in the 1930s after the Harger drunkometer, while European road-traffic legislation inherited the metric per-mille convention from mid-century industrial chemistry.
Equivalent values for two common BAC thresholds
Expression
0.08 threshold (US)
0.05 threshold (EU typical)
Percent (%)
0.08%
0.05%
Per mille (‰)
0.8‰
0.5‰
Grams per litre (g/L)
0.8 g/L
0.5 g/L
Milligrams per 100 ml
80 mg/100 ml
50 mg/100 ml
Breath (mg/L, 2100:1)
≈0.38 mg/L
≈0.24 mg/L
The four regulatory tiers: zero-tolerance to permissive
Across 296 catalogued jurisdictions, statutory BAC limits cluster into four discernible tiers. The strictest is true zero-tolerance: 0.00‰ for general drivers, low enough that any detectable alcohol can be treated as a violation. Roughly thirty countries set the general-driver limit here or maintain near-zero special-driver rules, including Brazil, Hungary, the Czech Republic, Romania, Saudi Arabia, the United Arab Emirates, Kuwait, Pakistan, and Japan’s novice regime.
A strict-but-not-zero cluster sits at 0.20 to 0.30‰: Sweden (0.20‰), Norway (0.20‰), Poland (0.20‰), Estonia (0.20‰), and several other jurisdictions that punish standard drivers well below the more common European baseline. A moderate tier at 0.50‰ dominates global practice: the majority of the European Union, most of Latin America, Australia, Israel, South Korea, South Africa, Thailand, and China all converge around 0.50‰ for general drivers.
The permissive tier — 0.80‰ — is now an outlier. Around twenty jurisdictions remain here: the United States at 0.08% (0.80‰) in most states, the United Kingdom in England, Wales, and Northern Ireland, Canada’s criminal threshold, Malaysia, and Singapore. Scotland broke ranks with the rest of the UK in 2014 and adopted 0.50‰; Utah became the first US state to break ranks with the federal norm in December 2018, dropping to 0.05% (0.50‰). The historical trajectory is clear: 0.80‰ is legacy, 0.50‰ is the current consensus, and a long tail of countries have moved further still. The jurisdiction table below shows which tier each of the 296 catalogued regions falls into.
Novice, commercial, and professional carve-outs
The headline BAC limit applies to the average experienced driver operating a private vehicle. Most countries layer stricter thresholds on top of that baseline for populations whose crash risk per unit of alcohol is measurably higher. Novice and probationary licence holders — usually defined as drivers within two or three years of licensure, or under a statutory age such as 21 in the United States or 24 in Germany — typically face 0.00 to 0.20‰ regardless of what the general limit is. Germany, France, Italy, Ireland, Australia, and the full US zero-tolerance-for-under-21 regime all follow this pattern.
Commercial drivers operating trucks, buses, or taxis face their own schedule. The United States Federal Motor Carrier Safety Administration sets 0.04% for commercial driver’s licence (CDL) holders — half the general limit. Most of the European Union applies 0.00 to 0.20‰ to commercial operators. Professional pilots, rail operators, and maritime crew sit on an even stricter curve, often between 0.00 and 0.40‰ worldwide, with pre-duty abstinence windows of eight to twelve hours on top of the numeric threshold. The physiological argument is consistent across categories. Epidemiological crash-risk-per-BAC curves are steep to begin with, but the slope is sharpest among inexperienced drivers and among operators whose duty cycles demand reaction time and vigilance that are measurably degraded even at low BAC values.
Why breath tests do not always match blood
Every roadside breath test relies on an assumption: that alcohol equilibrates between pulmonary blood and exhaled alveolar air at a fixed ratio of 2,100 to 1. This is the Henry’s-law partition coefficient at 34°C, adopted as a forensic standard in 1952 and still embedded in the firmware of modern evidential breath analysers. The assumption is a convenient average. Real human partition ratios measured in controlled laboratory settings range from roughly 1,500:1 to 3,000:1, a fortyish-percent variance that translates directly into BrAC-to-BAC uncertainty.
Temperature matters. A one-degree rise in body temperature increases the measured BrAC by about seven percent without any change in blood alcohol. Breathing pattern matters too: hyperventilation before the test lowers the reading; breath-holding raises it. Residual mouth alcohol from mouthwash, belching, or a drink consumed within the preceding fifteen minutes can produce spuriously high readings that a fifteen-minute observation period is designed to rule out. Modern evidential-grade infrared devices used in police stations are accurate to within roughly ±0.005 BAC under laboratory conditions. Handheld preliminary breath testers used at the roadside carry a wider tolerance — around ±0.02 BAC — which is why most jurisdictions require a confirmatory test at the station before charging. The jurisdiction table below lists the statutory BAC threshold; in practice the BrAC limit used for enforcement is derived from it using the 2,100:1 ratio.
Scope, limitations, and legal disclaimer
The database below catalogues baseline statutory BAC thresholds for standard private-vehicle operators in each jurisdiction. It is intentionally narrow in scope. Several bodies of closely related law are not represented here. Waterborne and aviation regulations generally apply lower thresholds than road statutes; pleasure-craft BAC limits differ from commercial-maritime limits which differ again from aviation rules, and we do not attempt to summarise them. Commercial-driver thresholds, novice thresholds, and professional-operator schedules are referenced in the jurisdiction pages but not in the baseline column of this table.
Cycling law is particularly fragmented. Germany distinguishes a 1.6‰ absolute-unfitness threshold for cyclists from a 0.3‰ relative-unfitness threshold; the Netherlands treats bicycles under road-traffic law with a 0.5‰ limit; the United Kingdom has no BAC limit for cyclists but prosecutes under a separate “unfit through drink” offence. Repeat-offender thresholds (typically halved after a first conviction) and aggravated-DUI thresholds (typically 0.15 to 0.20‰ for enhanced penalties) vary by jurisdiction and are covered in the dedicated country pages, not here.
This page is a reference index, not legal advice. Statutes change, enforcement practices change, and the primary-legislation links beside each row are the authoritative source. Always verify current law with an official government source — ministry of transport, motoring agency, or national gazette — before making any decision that depends on it. Alcometer.org is not a law firm and does not provide legal counsel.
Frequently asked questions
What is the lowest BAC limit in the world?
A growing list of countries enforce a true 0.00‰ limit, meaning any detectable alcohol may be treated as a violation. These include Brazil, the Czech Republic, Hungary, Romania, Saudi Arabia, the United Arab Emirates, Kuwait, Pakistan, Bangladesh, and Iran. Several more — Sweden, Norway, Poland, and Estonia — sit at 0.20‰ for general drivers, which is strict, but it is not the same numeric category as a true 0.00‰ rule.
Which countries have zero-tolerance drink-driving laws?
True zero-tolerance statutes use 0.00‰ for general drivers in roughly thirty jurisdictions. Muslim-majority states such as Saudi Arabia, the United Arab Emirates, Kuwait, Pakistan, Bangladesh, and Iran prohibit alcohol consumption outright and apply zero-tolerance to driving as a consequence. Secular jurisdictions with explicit 0.00 driving limits include Brazil, the Czech Republic, Hungary, Romania, and Slovakia. Sweden, Norway, Poland, and Estonia are stricter than the 0.50‰ European baseline, but their general-driver threshold is 0.20‰ rather than 0.00‰. Additionally, most countries apply zero-tolerance to novice, commercial, and professional drivers even when the general limit is higher.
Is 0.08% the same as 0.08‰?
No — they differ by a factor of ten. 0.08% is the United States threshold; 0.08‰ would be one-tenth as strict. 0.08% equals 0.8‰, 0.8 g/L, or 80 mg/100 ml — all the same concentration in different units. By contrast, 0.08‰ equals 0.008% or 8 mg/100 ml, which is lower than almost every statutory driving limit on earth. Confusing the two is a common source of error in travel guides and is why our jurisdiction table always displays the native unit alongside a per-mille equivalent.
What happens if I refuse a breath test abroad?
Almost every country with a BAC statute also has an implied-consent law: by operating a motor vehicle on a public road, you are deemed to have consented to a lawful roadside test. Refusal is usually a separate criminal offence, frequently carrying penalties at least as severe as a confirmed drink-driving conviction — automatic licence revocation, a substantial fine, and in some jurisdictions a mandatory custodial sentence. Germany, France, the United Kingdom, Canada, Australia, and every US state treat refusal as its own offence. Check the jurisdiction-specific page before assuming refusal is a viable strategy; it almost never is.
Does a US licence holder face the same BAC limit when renting a car in Europe?
Yes — BAC limits are enforced based on where you drive, not on where your licence was issued. A US driver renting a car in France is subject to France’s 0.50‰ limit, not the US 0.08% limit; a French driver renting in Utah is subject to Utah’s 0.05% limit, equivalent to 0.50‰. Many European countries also apply novice rules to drivers within two or three years of licensure regardless of nationality. Rental agreements and your insurer’s terms frequently cross-reference local law, so a BAC that is legal at home may still void coverage abroad.
Why does the US use a different BAC unit than Europe?
American forensic toxicology standardised on percent weight-by-volume in the 1930s, when Rolla Harger’s drunkometer and Robert Borkenstein’s breathalyser first established alcohol analysis as a legal discipline. Percent was already the dominant convention in American clinical chemistry, so it carried over into state motor-vehicle codes. Europe inherited the per-mille convention from mid-century industrial and analytical chemistry. The two systems describe identical physical concentrations — 0.08% and 0.8‰ are the same number — but the reporting conventions diverged and have never been reconciled because there is no practical benefit to doing so now that conversion is trivial.