Free online calculator
Sequence Calculator
Detect arithmetic, geometric, or quadratic patterns and calculate the next three terms.
Solution
Your solution will appear here
Enter a problem, use the dedicated math keys, then calculate to see the answer and explanation.
Step-by-step solutions
Clear, detailed explanations
Instant results
Accurate answers in seconds
Free to use
No sign-up required
How to Use the Sequence Calculator
1
Enter at least three terms
Separate the known sequence terms with commas.
2
Compare differences and ratios
The calculator tests common first- and second-order patterns.
3
Continue the pattern
The detected rule is used to produce the next three terms.
Example
Frequently Asked Questions
Which sequence types are supported?
The calculator detects arithmetic, geometric, and constant-second-difference quadratic sequences.
What if no pattern is found?
It reports that no supported pattern was detected instead of guessing an unreliable rule.
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