Total Borrow

Total Borrows is the amount of underlying currently loaned out by the market, and the amount upon which interest is accumulated to suppliers of the market.

BErc20 / CEther

function totalBorrowsCurrent() returns (uint)

• RETURN: The total amount of borrowed underlying, with interest.

Solidity

BErc20 bToken = BToken(0x3FDA...);
uint borrows = bToken.totalBorrowsCurrent();

Web3 1.0

const bToken = CEther.at(0x3FDB...);
const borrows = (await bToken.methods.totalBorrowsCurrent().call());