Supabus — Free Online Calculators, Converters & PDF Tools
Free online tools for everyday tasks - unit converters, calculators, PDF and image editing, text tools, and YouTube utilities. Fast, accurate, and no sign-up required.
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The tools people reach for most.
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Common workflows
Chain two tools together to get a task done in one visit.
Shrink an image for the web
Resize a photo to the exact dimensions you need, then compress it further to shave off extra kilobytes before uploading.
Combine and shrink PDFs
Merge multiple PDFs into a single file, then compress the result so it's easier to email or upload.
Convert a price, then work out a loan
Convert an amount into your own currency, then estimate the monthly payments on a loan for it.
Your files aren't stored
Every file you upload is processed to produce your result and is not retained afterward - nothing sits around on a server once you've downloaded your output. Read the full Privacy Policy for the details.
Why Supabus
- • No account required - every tool works instantly.
- • Files are processed transiently and are never stored.
- • Available in English, Spanish, German, and French.
- • Runs entirely in your browser - nothing to install.
Questions or feedback?
Supabus is an independently run project. If something's broken or you have an idea for a new tool, we'd like to hear about it.