Work out internet bill split instantly with clear inputs, formula shown and shareable results.
Weighted splitting handles the housemate who streams 4K all evening. Each heavy user counts as more than one share, the weights are summed, and the bill divided by the total — so the shares still add up exactly to the bill.
Weighted split
standard share = bill / (standard users + heavy users x (1 + premium)); heavy share = standard x (1 + premium)
On a 42 bill the difference is a few pounds, so probably not. It matters more on metered connections or where one person works from home.
Then split evenly. Weighting only makes sense when the difference is obvious and agreed.