Calculate Standard Drinks
Different countries define a “standard drink” (or unit) using specific grams of ethanol. Enter your beverages to understand actual intake and align with guidelines.
Total ethanol
29.4 g
Standard drinks
2.10
Definition: 14 g ethanol per drink
Weekly equivalent
14.7
If this reflects daily intake
Guidance highlights
- Monitor intake relative to local low-risk drinking guidelines (e.g., US: ≤14 standard drinks/week for men, ≤7 for women).
- Plan alcohol-free days, alternate alcoholic with non-alcoholic beverages, and avoid binge sessions.
- Consult healthcare professionals if you struggle to stay within recommended limits or experience alcohol-related harm.
How to Use This Calculator
Select your region’s standard drink definition
This ensures the results align with national health advice and labelling laws.
Enter each beverage consumed
Provide accurate volume (mL) and ABV%. Add more drinks for mixed sessions or weekly patterns.
Compare with low-risk guidelines
Use the totals to plan reduction strategies, schedule alcohol-free days, or discuss with a clinician.
Formula
Ethanol grams = Volume (mL) × ABV% × 0.789
Standard drinks = Total ethanol (g) ÷ Grams per standard drink
Example (US): 355 mL beer × 5% × 0.789 = 14 g → 14 ÷ 14 = 1 standard drink
Full Description
Standard drink calculators help translate beverage sizes into comparable units of ethanol, enabling safer drinking decisions and adherence to guidelines. Regularly consuming above recommended limits increases risks for liver disease, cancer, hypertension, and dependence. Use this tool alongside alcohol diaries, unit tracking, and professional support to reduce harm or plan abstinence.
Frequently Asked Questions
Why do definitions vary?
Each country sets a standard drink based on public health policy. Always follow your regional guidelines when using this calculator.
How do cocktails factor in?
Add each alcoholic component separately—or estimate total ethanol using ingredient volumes and ABV.
What if I drink weekly, not daily?
Input your session drinks and divide the weekly total by 7 to compare with daily recommendations.
Can I use this to support moderation?
Yes. Set weekly budgets of standard drinks, monitor with this calculator, and adjust behaviours to stay within safer limits.