Ignore the "To" column, it doesn't technically need to be there - it's just an indicator which is approximated to 2 decimal places.
The most important column is the "From" column.
If you enter "From":
0
0.5
1
25
Anything under 0.5kg (or 500g) will be charged at the rate below (even if it's just 1g under). In technical terms, the system checks each "From" figure in reverse order (highest to lowest) and tests whether the combined weight of the order equals or exceeds it.
For your final threshold, 25kg, you can set the cost to zero and tick the Prevent Free Shipping option.
Developer :: Bluepark Solutions Ltd