Free online calculator
Definite Integral Calculator
Evaluate an integral between lower and upper bounds and receive an exact result without an integration constant.
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
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How to Use the Definite Integral Calculator
1
Enter the function and bounds
Write an expression followed by from a to b.
2
Find an antiderivative
The solver integrates the function symbolically.
3
Apply the bounds
Upper and lower values are substituted and subtracted.
Example
Frequently Asked Questions
Why is there no + C?
A definite integral evaluates a fixed difference, so the integration constants cancel.
Can I use pi as a bound?
Yes. Enter pi directly, for example sin(x) from 0 to pi.
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