What does the Number Sequence Calculator work out?

Find the next terms of an arithmetic or geometric sequence. It is one of the Math tools on Mondo Knows.

How is the Number Sequence Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Number Sequence Calculator

Find the next terms of an arithmetic or geometric sequence. Use the free number sequence calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

First term

Second term

Terms to list

Mondo says

Arithmetic (difference 3)

2, 5, 8, 11, 14, 17, 20, 23, 26, 29

Sum of first 10 (arithmetic)155

Geometric (ratio 2.5)2, 5, 12.5, 31.25, 78.125, 195.3125, 488.2813, 1,220.7031, 3,051.7578, 7,629.3945

Sum of first 10 (geometric)12,714.3242

Both the arithmetic and geometric readings are shown so you can pick the pattern that fits.

Number Sequence Calculator: common questions

What does the Number Sequence Calculator work out?: Find the next terms of an arithmetic or geometric sequence. It is one of the Math tools on Mondo Knows.
How is the Number Sequence Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

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Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.