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Instant calculation
Enter the data and press the button to get the result.
Online Calculator
arithmetic progression calculator
Enter the first term, the common difference and the amount of terms.
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Local processing
The calculation is done directly in your browser.
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Frequently asked questions
What is an arithmetic progression?
It is a sequence with a constant difference between consecutive terms.
How is the nth term calculated?
aₙ = a₁ + (n - 1)d.
How is the sum calculated?
Sₙ = n(a₁ + aₙ) / 2.
Can the difference be negative?
Yes.