The Blood Alcohol Calculator estimates the blood alcohol content of a person based on the amount of alcohol consumed, the time period during consumption and the person's weight.

Using the Great Circle method which treats the globe as a perfect sphere, the Distance Calculator estimates the distance between varying latitudes and longitudes.

With the Length Conversion Calculator, you can simultaneously convert a length measurement into millimeters, centimeters, meters, kilometers, inches, feet, yards, miles and knots.

This excel spreadsheet is useful in doing skid mark analysis for motorcycle accidents. It determines the minimum speed at which a vehicle must have been traveling when it started to skid. The concepts and methodology are straight forward.

Using the Pressure Conversion Calculator, you can simultaneously convert a pressure measurement into kilopascals, millibars, centimeters of Mercury, meters of water, kilograms per square centimeter, inches of Mercury, inches of water and atmospheres.

The Skid/Speed Calculator is designed to estimate the speed of the vehicle based on general surface conditions and the length of the skid marks. It does not consider the grade of the road or the condition of tires, and should not be used as a substitute for a proper accident reconstruction investigation.

With the Speed Conversion Calculator, you can simultaneously convert a speed measurement into knots, miles per hour, kilometers per hour, feet per second and meters per second.

With the Weight Conversion Calculator, you can simultaneously convert a weight measurement into ounces, pounds, tons, newtons, milligrams, grams, kilograms and metric tons.