Breathalyzer measurement units
In Lithuania, blood alcohol concentration (BAC) is measured in promille (‰) — grams of pure alcohol per litre of blood. For example, 1 ‰ means about 1 gram of alcohol per litre of blood, so 2.5 ‰ is roughly 2.5 g/L. Breath alcohol is measured separately in mg/l of exhaled air.
The same value looks different in other countries, so the conversions are worth knowing: BAC % (used in the US, UK and Australia) equals promille ÷ 10, so 0.4 ‰ = 0.04 %; medical lab reports sometimes use mg/dL, where 100 mg/dL = 1 ‰. The general legal limit in Lithuania is 0.4 ‰ (0.2 ‰ for novice and professional drivers), so being able to read the figure in any unit helps. Our calculator always shows the result in promille.