Toolipedia- Free
- No sign-up
- Works on any device
No tool matches your search.
- Free
- No sign-up
- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
Looking for QR codes…
Integral calculator
Find the antiderivative of common functions, and the exact value of a definite integral between two limits.
- Free
- No sign-up
- Works on any device
About Integral calculator
Finds the antiderivative of common functions such as polynomials, trig, exponentials and 1/x, and gives the exact value of a definite integral between two limits. Remember that indefinite integrals carry a constant of integration, + C, which definite integrals drop when you subtract F(b) - F(a).
How to use Integral calculator
- Type the function of x you want to integrate.
- For a definite integral, enter the lower and upper limits.
- Read the antiderivative or the exact value of the definite integral.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
Why does an indefinite integral have + C?
Many functions differ only by a constant and share the same derivative, so the antiderivative is not unique. The + C stands for that unknown constant.
What does a definite integral represent?
It is the signed area between the curve and the x-axis from the lower to the upper limit. Area below the axis counts as negative, so the total can be smaller than the visible area.
How can I check my antiderivative is right?
Differentiate the answer. If you get back your original function, the antiderivative is correct. The derivative calculator on this site can do that check for you.
Is Integral calculator free?
Yes. Integral calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put Integral calculator on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.