United Kingdom

When Can I Drive After Drinking? UK Alcohol Calculator 🇬🇧

Calculate your blood alcohol level and see if you are within the drink and drive limit in the UK. Our BAC calculator helps you estimate units and sobriety time.

80 mg/100 ml 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 }} Drink-drive limit {{ countryLimit }}{{ unitSign }}
Safe Caution Impaired Intoxicated Dangerous
Over the legal limit – driving is illegal. Approaching the legal limit – driving not advised. Likely under the limit, but drive with care.
{{ legalLimitTimeLabel }}
Sober in: {{ sobrietyTime }}

Drink Drive Limit in England, Scotland & Wales

All drivers (E&W, NI) 80 mg/100ml
Scotland (separate limit) 50 mg/100ml

Drink Driving Penalties & Alcohol Limit UK

Offence type No offence Below the legal limit – driving is permitted.
Offence type Over the 0.0 limit Zero-tolerance country — driving with any detectable alcohol is prohibited.
Offence type Over the legal limit You are over the legal limit and committing a drink-driving offence. Exact penalties depend on your BAC and local law.
Offence type Drink driving (criminal offence) 80–149 mg/100 ml Criminal offence from 80 mg/100 ml — conviction carries a mandatory minimum 12-month disqualification.
Typical penalties
  • Drink-driving offence — fine £1,000–£5,000+
  • Driving ban 12–36 months
  • Up to 6 months imprisonment
Offence type High-excess drink driving 150+ mg/100 ml Criminal offence — may result in a criminal record.
Typical penalties
  • Very high excess — fine £5,000+ (unlimited)
  • Ban 3+ years, possible lifetime
  • 6–12 months imprisonment, criminal record
These are general penalties. Actual consequences may vary by local law and circumstances. Learn more →

Drink-drive limit

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Based on UK law ·

Elimination rate

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Typical average

Standard Drinks

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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

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Estimated duration above the legal driving limit
For your own safety, we recommend using a rate no higher than the average.
Current BACPeak BAC {{ initialSobriety }}{{ unitSign }} Drink-drive limit {{ countryLimit }}{{ unitSign }}
Safe Caution Impaired Intoxicated Dangerous
Over the legal limit – driving is illegal. Approaching the legal limit – driving not advised. Likely under the limit, but drive with care.
{{ legalLimitTimeLabel }}
Sober in: {{ sobrietyTime }}

Drink Drive Limit in England, Scotland & Wales

All drivers (E&W, NI) 80 mg/100ml
Scotland (separate limit) 50 mg/100ml

Drink Driving Penalties & Alcohol Limit UK

Offence type No offence Below the legal limit – driving is permitted.
Offence type Over the 0.0 limit Zero-tolerance country — driving with any detectable alcohol is prohibited.
Offence type Over the legal limit You are over the legal limit and committing a drink-driving offence. Exact penalties depend on your BAC and local law.
Offence type Drink driving (criminal offence) 80–149 mg/100 ml Criminal offence from 80 mg/100 ml — conviction carries a mandatory minimum 12-month disqualification.
Typical penalties
  • Drink-driving offence — fine £1,000–£5,000+
  • Driving ban 12–36 months
  • Up to 6 months imprisonment
Offence type High-excess drink driving 150+ mg/100 ml Criminal offence — may result in a criminal record.
Typical penalties
  • Very high excess — fine £5,000+ (unlimited)
  • Ban 3+ years, possible lifetime
  • 6–12 months imprisonment, criminal record
These are general penalties. Actual consequences may vary by local law and circumstances. Learn more →
{{ afterLabel }} {{ $t('unit.' + units) }} Status
{{ result.time }} {{ result.drunkenness }}
  • Likely under the limit, but drive with care.
  • Approaching the legal 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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Peak BAC: {{ peakBAC }}

💡 Advice: drink water, eat, and avoid driving until you are under the legal limit 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 as a percentage. This number reflects how much alcohol is in your bloodstream and is used to assess impairment.

Legal limit

In the United Kingdom, the drink drive limit uk is 0.08 % BAC (80mg/100ml) for England and Wales, and 0.05 % BAC (50mg/100ml) for Scotland. Exceeding this can result in severe penalties.

Elimination rate

This shows the assumed average rate your body metabolizes alcohol — typically ~0.015 % BAC per hour. It’s an estimate of how fast your BAC decreases over time.

Standard Drinks

The number of Standard Drinks represents the approximate number of typical servings you’ve consumed (e.g., one beer, glass of wine, or shot), based on local standards for drink size.

Pure Alcohol

This is the amount of pure alcohol your body has absorbed so far, giving you a measure of total alcohol consumed.

Time vs. Sobriety Table

The table lists how your BAC is expected to change with each hour passed — and when a Start time of drinking is provided, it aligns these estimates with the exact time of day you began drinking. For example, if you started at 6:00 PM, the column will show your projected BAC at 6:00 PM (Now), 7:00 PM (1h), 8:00 PM (2h), etc., so you can clearly see when your BAC is likely to cross legal and safer thresholds as the day progresses. Icons or status indicators show whether the level is safe for driving at those specific clock times, making it easier to plan your departure or rest period.

Sobriety Over Time Graph

A visual line chart plotting your estimated BAC decline over hours. It helps you see when your BAC drops below legal and safer levels.

How Alcohol Affects You

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

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 legal driving limit.

  • Sober in: total time until BAC reaches ~0.000 %.

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

UK 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.

How much does United Kingdom drink?

Alcohol consumption per adult, per year

10.9L

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

Per adult, that is roughly:

384 beers ≈ 7/week
606 glasses of wine ≈ 12/week
681 shots ≈ 13/week
10.9 L
0.7 L Ø 8.9 17.1 L

23% above the regional average

Ranks #18 of 51 in Europe Ranks #23 of 188 in the World Average in Europe: 8.9 L

How neighbours compare

#1 France 11.2L #12 Europe
#2 United Kingdom 10.9L #18 Europe
#3 Scotland 10.9L #18 Europe
#4 Ireland 10.5L #22 Europe
#5 Netherlands 8.7L #30 Europe
#6 Belgium 8.7L #30 Europe

How safe are the roads in United Kingdom?

Road traffic deaths per 100,000 people, per year

2.4 /100k

road traffic deaths per 100,000 people, 2021

~40% of road deaths linked to alcohol WHO estimate, 2019 · 28–56%
31 road deaths per week WHO estimate, 2021
12 alcohol-linked deaths per week WHO-derived estimate
2.4
0.0 Ø 6.7 17.2

64% fewer road deaths than the regional average

#6 safest of 53 in Europe #9 safest of 195 worldwide Average in Europe: 6.7 per 100k

How neighbours compare

#1 United Kingdom 2.4 #6 Europe
#2 Scotland 2.4 #6 Europe
#3 Ireland 3.2 #10 Europe
#4 Netherlands 3.2 #11 Europe
#5 Belgium 4.0 #16 Europe
#6 France 4.6 #19 Europe

Latest available year shown per country.

LIMITS NEARBY

BAC limits in neighbouring countries

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

SCOT

Scotland

50mg/100 ml
Moderate
IE

Ireland

50mg/100 ml
Moderate
FR

France

50mg/100 ml
Moderate
NL

Netherlands

50mg/100 ml
Moderate
BE

Belgium

50mg/100 ml
Moderate

Drink Drive Limit in England, Scotland & Wales

Drink-drive limits in the UK (England, Wales & Northern Ireland)

All drivers (E&W, NI)
80mg/100ml
Relaxed
Scotland (separate limit)
50mg/100ml
Moderate
The 80 mg/100ml blood limit applies in England, Wales and Northern Ireland (35 µg/100ml breath). Scotland has enforced a lower 50 mg/100ml limit since December 2014 (22 µg/100ml breath). The UK has one of the highest limits in Europe — most drivers can be impaired well before they exceed it.

Drink Driving Penalties & Alcohol Limit UK

Consequences of exceeding the legal drink-drive limit

80–149 mg/100 ml
Drink driving (criminal offence)
  • Drink-driving offence — fine £1,000–£5,000+
  • Driving ban 12–36 months
  • Up to 6 months imprisonment
150+ mg/100 ml
High-excess drink driving
  • Very high excess — fine £5,000+ (unlimited)
  • Ban 3+ years, possible lifetime
  • 6–12 months imprisonment, criminal record

Source: UK Government, DVLA, and Alcohol Law Enforcement Policies

Tips for Responsible Drinking & Morning After Calculator

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 or stay overnight.

Source: NHS, Drinkaware, and Public Health England

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