📈 Rate Calculator
Blended Rate Calculator
Enter multiple loans to instantly calculate the weighted average blended interest rate across all your debt.
💰 Your Loans
📈 Blended Rate Results
Blended Interest Rate
—
Weighted average across all loans
💰 Total Loan Amount—
📈 Weighted Interest/yr—
🕑 Est. Monthly Interest—
Enter your loans above and click Calculate to see the blended rate.
What is a Blended Rate Calculator?
A Blended Rate Calculator computes the weighted average interest rate across multiple loans or mortgages. Instead of comparing several different rates, you get one combined rate that reflects what you're truly paying across all your debt.
Blended Rate Formula
Blended Rate = Σ (Loan Amount × Rate) ÷ Total Loan Amount
Example:
Loan 1: $200,000 @ 6.5% → $13,000
Loan 2: $50,000 @ 8.0% → $4,000
Total: $250,000 → $17,000 ÷ $250,000 = 6.80% blended rate
Example:
Loan 1: $200,000 @ 6.5% → $13,000
Loan 2: $50,000 @ 8.0% → $4,000
Total: $250,000 → $17,000 ÷ $250,000 = 6.80% blended rate
When to Use a Blended Rate Calculator
- First & second mortgage — combine both loans to see your true effective rate.
- Refinancing decision — compare your blended rate to a single new refinance rate.
- Debt consolidation — see if consolidating multiple debts lowers your effective rate.
- Multiple personal loans — understand the true cost of all combined borrowing.
- HELOC + mortgage — combine your primary mortgage with a home equity line.
Blended Rate Examples
| Scenario | Loan 1 | Loan 2 | Blended Rate |
|---|---|---|---|
| 1st + 2nd Mortgage | $300k @ 6.5% | $75k @ 8.5% | 6.90% |
| Mortgage + HELOC | $250k @ 7.0% | $50k @ 9.0% | 7.33% |
| Two personal loans | $20k @ 10% | $10k @ 15% | 11.67% |
| Auto + personal | $25k @ 5.9% | $8k @ 12% | 7.35% |
Blended Rate vs Refinancing
If your blended rate is higher than current refinance rates, consolidating could save you money. If the blended rate is lower, keeping your existing loans separate may be smarter. Use our Mortgage Recast Calculator to see how a lump-sum payment could further lower your costs.
Frequently Asked Questions
A blended rate is the weighted average interest rate across multiple loans. It is calculated by multiplying each loan balance by its rate, summing those products, and dividing by the total loan balance. It tells you the single effective rate you are paying across all your debt.
Compare your blended rate to current refinance rates. If refinance rates are lower than your blended rate, consolidating your loans could reduce your overall interest cost. Factor in closing costs and how long you plan to stay in the property.
Yes. The blended rate is weighted by loan size. A large loan at a low rate will pull the blended rate down significantly, while a small loan at a high rate has less overall impact.
Yes — our calculator supports unlimited loans. Click "Add Another Loan" to add as many as you need.
No. The blended rate is the weighted average of your nominal interest rates. APR also includes fees and other costs. Use the blended rate for comparing rate levels, and APR for the true cost of a single loan.