$100 Compound Interest Calculator

Calculate the future value of 100.
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How Much Will an Investment of 100 Be Worth in the Future?
Enter your details into the calculator and click calculate. It will show the future value of the investment based on the rate of return, type of compounding, and number of years invested.
About Compounding
Depending on how an investment is compounded it will have a different future value. For example, let's use the example of a $100 investment with a 5% return for 1 year.
Yearly Compounding
In this case, we add 5% to the investment after 1 year. So an investment of $100 will be worth $105 after 1 year.
Monthly Compounding
For monthly compounding, we divide the invest return by 12 and compound after each month. So a 5% interest rate equates to 0.4167% interest per month. This can be calculated by using this formula.
Investment x (1 + 5/12/100)12
The table below shows how monthly compound interest is calculated by month.
Month Monthly Interest Earned Value After Month
1 0.42 100.42
2 0.42 100.84
3 0.42 101.26
...... ...... ......
10 0.43 104.25
11 0.43 104.68
12 0.44 105.12
Weekly Compounding
For monthly compounding, we divide the invest return by 52 and compound after each week. So a 5% interest rate equates to 0.0962% interest per week. This can be calculated by using this formula.
Investment x (1 + 5/52/100)52
The table below shows how weekly compound interest is calculated by week.
Week Weekly Interest Earned Value After Week
1 0.10 100.10
2 0.10 100.19
3 0.10 100.29
...... ...... ......
49 0.10 104.82
50 0.10 104.92
51 0.10 105.02
52 0.10 105.12
Daily Compounding
For daily compounding, we divide the invest return by 365 and compound after each day. So a 5% interest rate equates to 0.0137% interest per day. This can be calculated by using this formula.
Investment x (1 + 5/365/100)365
The table below shows how daily compound interest is calculated by day.
Day Daily Interest Earned Value After Day
1 0.01 100.01
2 0.01 100.03
3 0.01 100.04
...... ...... ......
363 0.01 105.10
364 0.01 105.11
365 0.01 105.13
Future Value of 100 Compounded Annually Time Based on Return
Time 2% 4% 6% 8% 10%
1 Year 102 104 106 108 110
2 Years 104 108 112 117 121
3 Years 106 112 119 126 133
4 Years 108 117 126 136 146
5 Years 110 122 134 147 161
6 Years 113 127 142 159 177
7 Years 115 132 150 171 195
8 Years 117 137 159 185 214
9 Years 120 142 169 200 236
10 Years 122 148 179 216 259
11 Years 124 154 190 233 285
12 Years 127 160 201 252 314
13 Years 129 167 213 272 345
14 Years 132 173 226 294 380
15 Years 135 180 240 317 418
16 Years 137 187 254 343 459
17 Years 140 195 269 370 505
18 Years 143 203 285 400 556
19 Years 146 211 303 432 612
20 Years 149 219 321 466 673
21 Years 152 228 340 503 740
22 Years 155 237 360 544 814
23 Years 158 246 382 587 895
24 Years 161 256 405 634 985
25 Years 164 267 429 685 1,083
26 Years 167 277 455 740 1,192
27 Years 171 288 482 799 1,311
28 Years 174 300 511 863 1,442
29 Years 178 312 542 932 1,586
30 Years 181 324 574 1,006 1,745
31 Years 185 337 609 1,087 1,919
32 Years 188 351 645 1,174 2,111
33 Years 192 365 684 1,268 2,323
34 Years 196 379 725 1,369 2,555
35 Years 200 395 769 1,479 2,810
36 Years 204 410 815 1,597 3,091
37 Years 208 427 864 1,725 3,400
38 Years 212 444 915 1,863 3,740
39 Years 216 462 970 2,012 4,114
40 Years 221 480 1,029 2,172 4,526
41 Years 225 499 1,090 2,346 4,979
42 Years 230 519 1,156 2,534 5,476
43 Years 234 540 1,225 2,737 6,024
44 Years 239 562 1,299 2,956 6,626
45 Years 244 584 1,376 3,192 7,289
46 Years 249 607 1,459 3,447 8,018
47 Years 254 632 1,547 3,723 8,820
48 Years 259 657 1,639 4,021 9,702
49 Years 264 683 1,738 4,343 10,672
50 Years 269 711 1,842 4,690 11,739