> For the complete documentation index, see [llms.txt](https://documentation.soulver.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.soulver.app/syntax-reference/units-and-conversions/growth-and-change.md).

# Growth & Change

## Saving toward a target

Calculate how long it takes to reach a target when you add a fixed amount regularly:

`time from $20k to $40k at $2k every month in months` → **10 months**

## Percentage growth

Calculate how a quantity grows when it increases by a percentage each period:

`20k after 6 months at 10% per month` → **35,431** (rounded)

Each month’s increase applies to the previous month’s total, including earlier growth.

## Time to reach a target

If your user base grows by 10% each month, how long will it take to grow from 20,000 to 100,000 users?

`time from 20k to 100k at 10% growth per month` → **16.89 months**

This assumes the growth rate stays constant.

## Finding a growth rate

If a quantity grows from 10,000 to 15,000 over a week, calculate the equivalent daily growth rate:

`growth per day from 10k to 15k over 1 week` → **6%**

This is the constant daily percentage increase that would produce the same overall growth.