The weight of a bell is traditionally measured in hundredweights (cwt), quarters (qtr) and pounds (lb). Using the tenor in the Evesham Bell Tower as an example we see that it weighs 35-3-20 or 35cwt and 3qtr and 20lb.

For those not familar with English measures it can easily be coverted in pounds (lb) and from there into kilograms (kg) or anything else that you are comfortable with.

1cwt = 112lb and 1qtr = 28lb so it is simple to convert 35-3-20 into pounds: (35x112) + (3x28) + 20 = 4024lb = 1825kg.