When Can I Drive After 2 Shots?
Two shots of spirits is a common amount — two rounds at a bar, two cocktails at a party. Whether it is safe to drive depends entirely on your weight, sex, and how quickly you drank them. The table below provides the exact BAC and wait times using the Widmark formula.
Use our free BAC calculator to get a personalised estimate based on your weight, sex, and drinks.
Calculate Your BAC Now →The Math: How BAC Is Calculated
BAC is calculated using the Widmark formula: BAC = (ethanol grams × 100) / (weight_kg × r × 1000), where r = 0.68 for males and r = 0.55 for females, and weight_kg = lb / 2.205.
Two standard shots (44 ml each at 40% ABV) contain approximately 28 grams of ethanol — equivalent to 2 standard drinks, the same as 2 beers. Alcohol is then eliminated at approximately 0.015% BAC per hour. The table below shows peak BAC (no metabolism during drinking) and the hours needed to reach key thresholds.
BAC Chart for 2 Standard Shots by Weight and Sex
Peak BAC immediately after consuming 2 standard shots, before any metabolism is applied. Hours to 0.08% and 0.00% are calculated from this peak at 0.015%/hr.
| Weight | Male BAC | Female BAC | Male → 0.08% | Female → 0.08% | Male → 0.00% | Female → 0.00% |
|---|---|---|---|---|---|---|
| 120 lb | 0.076% | 0.094% | Already under | 0.9 hrs | 5.1 hrs | 6.3 hrs |
| 140 lb | 0.065% | 0.080% | Already under | Already under | 4.3 hrs | 5.3 hrs |
| 160 lb | 0.057% | 0.070% | Already under | Already under | 3.8 hrs | 4.7 hrs |
| 180 lb | 0.050% | 0.062% | Already under | Already under | 3.3 hrs | 4.1 hrs |
| 200 lb | 0.045% | 0.056% | Already under | Already under | 3.0 hrs | 3.7 hrs |
| 220 lb | 0.041% | 0.051% | Already under | Already under | 2.7 hrs | 3.4 hrs |
Use our free BAC calculator to get a personalised estimate based on your weight, sex, and drinks.
Calculate Your BAC Now →What If You Drank Over More Than 1 Hour?
Two shots consumed over 2 hours allows 0.030% BAC to be eliminated during drinking. For a 160 lb male (peak 0.057%), effective BAC at 2 hours is about 0.027%. For a 140 lb female (peak 0.081%), effective BAC at 2 hours is about 0.051% — under the legal limit.
What Factors Make Your BAC Higher or Lower?
- Body composition: Higher body fat percentage (less body water) means higher BAC per drink. Muscular individuals may have lower BAC than the table suggests.
- Food: Eating before or during drinking slows alcohol absorption and reduces peak BAC by up to 50%. The table assumes drinking without food.
- Drinking speed: Spreading drinks over more time allows metabolism to offset absorption, reducing peak BAC. The table shows worst-case (all drinks at once).
- Tolerance: Tolerance affects how drunk you feel, not your actual BAC. A high-tolerance drinker feels less impaired at 0.10% but is equally impaired on measurable tests.
- Medications: Many medications interact with alcohol and can raise effective BAC or increase impairment.
The Bottom Line: When Is It Safe to Drive?
After 2 standard shots, lighter women should wait 1–5 hours to reach the legal limit and 5–8 hours to reach 0.00%. Heavier males may be under 0.08% immediately but should still wait 3–4 hours to clear. If your drinks were doubles or the spirits were over 40% ABV, add additional time.
The legal limit in most US states is 0.08%. Utah's limit is 0.05%. Commercial drivers face a 0.04% limit. International limits are often lower (0.05% in most of Europe, 0.02% in Sweden and Poland). If you are driving internationally or professionally, use the appropriate threshold.
When in doubt, do not drive. A ride-share, taxi, or designated driver is always the right call.
Use our free BAC calculator to get a personalised estimate based on your weight, sex, and drinks.
Calculate Your BAC Now →Frequently Asked Questions
Can I drive after 2 shots of whiskey?
It depends on your weight and sex. Two shots of standard whiskey (40% ABV) contain 28g ethanol. A 200 lb male will have a BAC of about 0.045% — under the limit. A 130 lb female will have a BAC of about 0.090% — over the limit. Check the table for your weight.
How long after 2 shots is it safe to drive?
For a 160 lb male (BAC ~0.057%), you are already under 0.08%, but wait about 3.8 hours to clear completely. For a 140 lb female (BAC ~0.081%), wait about 0.1 hour to reach 0.08% and 5.4 hours to reach 0.00%.
What if the shots were 50% ABV instead of 40%?
Two shots at 50% ABV (e.g., Everclear, some whiskeys) contain 35g of ethanol — 25% more than two standard shots. This proportionally increases BAC and wait times. Always check the bottle for ABV.
Disclaimer: This article is for educational purposes only and does not constitute legal or medical advice. BAC estimates are approximations. Individual results vary based on body composition, food intake, health status, and other factors. Never drive if you feel impaired. When in doubt, don't drive.