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How To
Calculate Your Estimated
Blood Alcohol Content / BAC
Showing
estimated percent of alcohol in the blood by number of drinks in
relation to body weight. This percent can be estimated by:
1. Count
your drinks (1 drink equals 1 ounce of 100-proof liquor, one
five ounce glass of table wine or one 12-ounce bottle of regular
beer).
2. Use
the chart below and under number of "drinks" and opposite "body
weight" find the percent of blood alcohol listed.
3.
Subtract from this number the percent of alcohol "burned up" during
the time elapsed since your first drink. This figure is .015% per
hour. (Example: 180 lb. man - 8 drinks in 4 hours / .167% minus
(.015x4) = .107 %
|
| |
DRINKS |
|
Body weight |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
|
100 lb. |
.038 |
.075 |
.113 |
.150 |
.188 |
.225 |
.263 |
.300 |
.338 |
.375 |
.413 |
.450 |
|
110 lb. |
.034 |
.066 |
.103 |
.137 |
.172 |
.207 |
.241 |
.275 |
.309 |
.344 |
.379 |
.412 |
|
120 lb. |
.031 |
.063 |
.094 |
.125 |
.156 |
.188 |
.219 |
.250 |
.281 |
.313 |
.344 |
.375 |
|
130 lb. |
.029 |
.058 |
.087 |
.116 |
.145 |
.174 |
.203 |
.232 |
.261 |
.290 |
.320 |
.348 |
|
140 lb. |
.027 |
.054 |
.080 |
.107 |
.134 |
.161 |
.188 |
.214 |
.241 |
.268 |
.295 |
.321 |
|
150 lb. |
.025 |
.050 |
.075 |
.100 |
.125 |
.151 |
.176 |
.201 |
.226 |
.251 |
.276 |
.301 |
|
160 lb. |
.023 |
.047 |
.070 |
.094 |
.117 |
.141 |
.164 |
.188 |
.211 |
.234 |
.258 |
.281 |
|
170 lb. |
.022 |
.045 |
.066 |
.088 |
.110 |
.132 |
.155 |
.178 |
.200 |
.221 |
.244 |
.265 |
|
180 lb. |
.021 |
.042 |
.063 |
.083 |
.104 |
.125 |
.146 |
.167 |
.188 |
.208 |
.229 |
.250 |
|
190 lb. |
.020 |
.040 |
.059 |
.079 |
.099 |
.119 |
.138 |
.158 |
.179 |
.198 |
.217 |
.237 |
|
200 lb. |
.019 |
.038 |
.056 |
.075 |
.094 |
.113 |
.131 |
.150 |
.169 |
.188 |
.206 |
.225 |
|
210 lb. |
.018 |
.036 |
.053 |
.071 |
.090 |
.107 |
.125 |
.143 |
.161 |
.179 |
.197 |
.215 |
|
220 lb. |
.017 |
.034 |
.051 |
.068 |
.085 |
.102 |
.119 |
.136 |
.153 |
.170 |
.188 |
.205 |
|
230 lb. |
.016 |
.032 |
.049 |
.065 |
.081 |
.098 |
.115 |
.130 |
.147 |
.163 |
.180 |
.196 |
|
240 lb. |
.016 |
.031 |
.047 |
.063 |
.078 |
.094 |
.109 |
.125 |
.141 |
.156 |
.172 |
.188 |
[Created from NHTSA chart, with modifications - everybody has different
metabolic ratios, do not rely on this chart]
An interactive BAC calculator
(It may require you download Shockwave software to display)
|
