Road Safety Calculators

Calculate blood alcohol levels, crash impact forces, DUI penalties, stopping distances, and more. Free, private road safety tools that work in every country.

BAC Calculator

Calculate your blood alcohol content based on drinks, weight, and time. See legal limits for 190+ countries and time until sober.

Car Crash Impact Force Calculator

Calculate the force of a car crash in Newtons and G-force. Compare seatbelt vs no seatbelt and see survival probability at different speeds.

DUI True Cost Calculator

Calculate the real cost of a DUI — fines, legal fees, insurance hikes, lost wages, and more. See the true 5-year financial impact.