How it works
Three simple steps — all in your browser.
1
Open it in your browser
Notepad calculator runs entirely on your device — no upload, no account, and nothing to install.
2
Do the work
Calculate as you type, line by line. Everything happens instantly as you go.
3
Save your result
Download or copy the output straight away. Your data never leaves your device.
Why use Notepad calculator
Completely private
Notepad calculator works locally in your browser — your files and text are never sent to a server.
Free, with no account
No sign-up, no trial, and no usage limits. Open the tool and start straight away.
Works on any device
Runs in any modern browser on desktop, tablet or phone — nothing to download.
Frequent questions
Is Notepad calculator free to use?
Yes — every tool here is completely free, with no account, sign-up, or usage limits.
Is anything uploaded to a server?
No. Notepad calculator runs entirely in your browser, so your data never leaves your device.
Do I need to install anything?
No. It works in any modern browser on desktop or mobile — there is nothing to download or install.
Does it work offline?
Once the page has loaded, the processing happens locally, so it keeps working even on a flaky connection.
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Compress image
Reduce JPEG file size in your browser.
Crop image
Frame and crop to any aspect ratio.
Resize image
Change image dimensions precisely.
Convert image
Convert between JPG, PNG and WebP.
Rotate & flip
Rotate or flip an image any direction.
Screenshot beautifier
Add padding, backgrounds and shadows.