Daily Compound Interest Calculator
Daily compound interest calculator: final balance with interest compounded every day, from principal, annual rate and number of days.
A = P · (1 + r/365)d
How to use this calculator
- Choose the quantity you want under “Solve for”.
- Type the known values and pick their units: any combination works.
- The result updates as you type. Open “Show the steps” to see the substitution.
A = P(1 + r/365)^days. Daily compounding earns slightly more than monthly or yearly at the same rate.
Formula
A = P · (1 + r/365)d
| Symbol | Quantity | Units |
|---|---|---|
| P | Principal | $, €, £ |
| r | Annual interest rate | %, × |
| d | Days | — |
| A | Final balance | $, €, £ |
Worked example
Given: P = 10,000.00 $ · r = 5 % · d = 365
A = P (1 + r/365)d
Result: A = 10,512.67 $
Final balance for different values of Principal
| P · Principal | A · Final balance |
|---|---|
| 5,000.00 $ | 5,256.34 $ |
| 7,500.00 $ | 7,884.51 $ |
| 9,000.00 $ | 9,461.41 $ |
| 10,000.00 $ | 10,512.67 $ |
| 11,000.00 $ | 11,563.94 $ |
| 12,500.00 $ | 13,140.84 $ |
| 15,000.00 $ | 15,769.01 $ |
| 20,000.00 $ | 21,025.35 $ |
Other values as in the worked example.
Frequently asked questions
$10,000 at 5 % for 365 days?
About $10,512.67.
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