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复利计算器
了解储蓄如何通过年度复利增长。
Estimated ending value
US$67,932.91- Total contributions
- US$40,000.00
- Estimated interest
- US$27,932.91
- Inflation-adjusted value
- US$67,932.91
- Contribution needed for target
- US$151.98 per selected contribution period
■ Contributions■ Interest
Estimate only. Rates are not forecasts. Taxes, fees and changing returns are excluded. Inputs and results stay on this device.Verification and calculation details
- Purpose
- 了解储蓄如何通过年度复利增长。
- Variables and units
- Use the labelled fields and units shown in the calculator. Results use those units unless a conversion is stated.
- Formula and method
- The exact formula and worked example are shown below. Deterministic formula executed locally in the browser.
- Assumptions
- Only entered values and stated assumptions are included. Local fees, rules and professional requirements are excluded unless explicitly shown.
- Engine version
- 1.0.0
- Production verification baseline
- Release 63 · source
998803f - Verification run
release-v63-2026-09-20- Last verified
- — Automated release checks passing
Read the Calculation Standard · Report a calculation or source issue
Compare compound-interest scenarios
Change one assumption at a time to see how rate and time affect the estimate.
| Scenario | Assumption | Ending value | Difference |
|---|---|---|---|
| Rate 1 point lower | 7% | US$63,367.82 | −US$4,565.10 |
| Current inputs | 8% | US$67,932.91 | — |
| Rate 1 point higher | 9% | US$72,892.14 | +US$4,959.23 |
| Five more years | 15 years | US$119,578.77 | +US$51,645.86 |
Year-by-year projection
The table is graph-ready: each row separates contributions, interest and inflation-adjusted value.
| Period | Contributions | Interest | Ending value | In today’s money |
|---|---|---|---|---|
| Year 1 | US$13,000.00 | US$942.48 | US$13,942.48 | US$13,942.48 |
| Year 2 | US$16,000.00 | US$2,212.18 | US$18,212.18 | US$18,212.18 |
| Year 3 | US$19,000.00 | US$3,836.26 | US$22,836.26 | US$22,836.26 |
| Year 4 | US$22,000.00 | US$5,844.14 | US$27,844.14 | US$27,844.14 |
| Year 5 | US$25,000.00 | US$8,267.67 | US$33,267.67 | US$33,267.67 |
| Year 6 | US$28,000.00 | US$11,141.35 | US$39,141.35 | US$39,141.35 |
| Year 7 | US$31,000.00 | US$14,502.55 | US$45,502.55 | US$45,502.55 |
| Year 8 | US$34,000.00 | US$18,391.72 | US$52,391.72 | US$52,391.72 |
| Year 9 | US$37,000.00 | US$22,852.69 | US$59,852.69 | US$59,852.69 |
| Year 10 | US$40,000.00 | US$27,932.91 | US$67,932.91 | US$67,932.91 |
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