Blended interest rate calculator

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Blended rate

Two or three loans? Your real rate is the balance-weighted blend. Enter each loan to see it.

Created for Phil Stevenson, Mortgage Nerd®, NMLS 365768. Calculation methods and limitations.

Your balance-weighted rate

A $300,000 balance at 4% and $100,000 at 7% produce a blended rate of 4.75%. Multiply each balance by its rate, add the results, then divide by the total balance.

Before consolidating

A blended rate measures current interest cost. It is not APR or a combined monthly payment. Consolidation can add fees, extend repayment or replace a fixed rate with a variable rate. Compare the full loan terms, not only the rate.