What If?
Small things, repeated, add up. Pick a question and change the numbers to see what yours would add up to.
What if I save $100 every month?
See what $100 a month adds up to over the years — as plain savings, or with a growth rate you choose.
What if I save $5 every day?
A small daily saving, added up over months and years.
What if I increase my savings every year?
Start with a monthly amount and raise it a little each year — see how much faster the total grows.
What if I read 10 pages every day?
Ten pages a day, added up — in pages and in books.
What if I walk 5,000 steps every day?
Your daily steps added up — and roughly how far they would take you.
What if I spend 2 hours every day on one activity?
Two hours a day — on a phone, a hobby, a commute or a new language — added up into days and years.
Try one now: What if I save $100 every month?
After 10 years you would have
$12,000
- You put in
- $12,000
- Saved in the first year
- $1,200
Year by year
| Year | Total saved |
|---|---|
| 1 | $1,200 |
| 2 | $2,400 |
| 3 | $3,600 |
| 4 | $4,800 |
| 5 | $6,000 |
| 10 | $12,000 |
Assumptions behind this result
- You save $100 every month, added at the end of each month.
- No interest or investment growth — just the money you put away.
- Inflation, taxes and fees are not taken into account.
More about this question, and how it is worked out →
How these calculators work
Each question uses a simple, stated formula, and the result updates as you change the numbers. Under every result is the list of assumptions it rests on — and the ones that are really guesses about you, such as a growth rate or a walking pace, are fields you can change.
The numbers stay in your browser while you play with them. If you share a result, the link carries only the values you entered for that question.