CalcTrick LogoCalctrick

Free finance calculator

blended rate calculator

Combine multiple loans or deposits at different rates into one weighted average rate and see how each balance affects the result.

Weighted average calculator
Blended Rate Calculator
Combine multiple loans or deposits at different rates into one weighted average rate and see how each balance affects the result.

Interest rate (%)

Balance / amount ($)

Interest rate (%)

Balance / amount ($)

Interest rate (%)

Balance / amount ($)

Blended rate
4.42%

Simple average rate: 4.57%

Total balance
$450,000.00

Total annual interest: $19,900.00

Interest difference
-$650.00

vs simple average interest

A blended rate gives more weight to larger balances, so bigger loans or deposits move the average more than smaller ones.

Blended Rate = Σ(rate × balance) ÷ Σ(balance)

Interest difference compares the weighted annual interest with the annual interest you would get from a simple unweighted average rate.

Portfolio mix chart

Balance mix by rate
Each slice shows how much of the combined balance sits at a given rate.
Total balance$450,000.00
Rate entry 1
44.44% at 3.95%
Rate entry 2
22.22% at 5.25%
Rate entry 3
33.33% at 4.50%

Weighted breakdown

EntryRateBalanceShare of totalAnnual interest
Rate entry 13.95%$200,000.0044.44%$7,900.00
Rate entry 25.25%$100,000.0022.22%$5,250.00
Rate entry 34.50%$150,000.0033.33%$6,750.00

Blended rate FAQs