Loan calculator
Loan calculator with amount, rate and term sliders, a rolling monthly payment, principal-vs-interest bars by year, an amortisation excerpt and an extra-payment tip.
Preview
Loan amount$320,000
$10,000$1,000,000
Interest rate4.60%
0.00%12.00%
Term25 years
1 year35 years
Paying $200 more a month saves $41,840 in interest and finishes 4 y 2 mo early.
Monthly payment
- Principal
- $320,000
- Interest
- $219,063
- Total paid · interest is 41%
- $539,063
Each yearHover a year
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $6,989 | $14,574 | $313,011 |
| 2 | $7,317 | $14,246 | $305,694 |
| 3 | $7,661 | $13,902 | $298,034 |
| 24 | $20,091 | $1,472 | $21,035 |
| 25 | $21,035 | $528 | $0 |
Install
Pro source requires Pebble Pro. Try the full preview above.
Props
| Prop | Type | Default | Description |
|---|---|---|---|
| defaultAmount | number | 320000 | Starting loan amount. |
| defaultRate | number | 4.6 | Starting annual interest rate in percent. |
| defaultYears | number | 25 | Starting term in years. |
| amountRange | [min, max, step] | [10000, 1000000, 5000] | Amount slider range. |
| rateRange | [min, max, step] | [0, 12, 0.05] | Rate slider range. |
| yearsRange | [min, max, step] | [1, 35, 1] | Term slider range. |
| currency | string | "USD" | ISO currency code. |
| locale | string | "en-US" | Formatting locale. |
| label | string | "Loan calculator" | Accessible name. |
Pro component
Try the full preview above. Editable source and build guides require Pebble Pro.