Pipes weight calculation

We prepared a formula for calculation of theoretical weight for our customer and visitors of our web sites. We hope that we could contribute to better mutual conversion of units of length and weight.

Outside diameter (D): mm
Wall thickness (t): mm
kg/m
Meters in total: m
Resulting weight: kg

Please, for filling of decimal point, use the point on your keyboard.
(Please, do not use dash and point on your numerical keyboard)