±Free
Geometric sequence
Find the nth term and finite sum of a geometric sequence.
Enter a first term, a constant ratio and the required number of terms. The tool repeatedly multiplies each term by the ratio and accumulates the finite sum, including the ratio-one case.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
First term: 3 Common ratio: 2 Number of terms: 4
Example result
{
"nth": 24,
"sum": 45
}Limitations and details
Use 1–10000 terms; this does not compute an infinite-series sum, and rapidly growing terms can exceed the numeric range.
Inputs and options
- First term
- Number
- Common ratio
- Number
- Number of terms
- Number · Minimum: 1 · Maximum: 10000
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.