Free Online Calculators – Scientific, Age, Percentage, Currency

Four honest calculators live here — a full scientific calculator for students, an age calculator that counts the days, a percentage calculator for discounts and marks, and a currency converter using live exchange rates.

🧮

Scientific Calculator

Trig, powers, roots — a full scientific calculator.

🎂

Age Calculator

Your exact age in years, months and days.

📊

Percentage Calculator

Discounts, increases, marks — quick percent math.

💱

Currency Converter

Live exchange rates & free currency conversion.

Most loved on AllConvert:
🗜️ Compress PDF 🔀 Merge PDF 📄 PDF to Word 📸 JPG to PDF

Every tool on this page is free, works on phone and computer, and runs right in your browser — your files are never uploaded to a server.

← Browse all tool categories

Get link
Facebook
X
Pinterest
Email
Other Apps

How to Merge PDF Files Online Free: Combine PDFs in Seconds

🚀 Try it now — free: Combine your PDFs in seconds with our free Merge PDF tool . Need the opposite? Split PDF Or make a file smaller with Compress PDF . How to Merge PDF Files Online Free Five PDF attachments in one email. A contract here, an invoice there, a scanned receipt somewhere in the middle. Sound familiar? Merging PDFs takes all those scattered files and binds them into one clean document — in the right order, with nothing lost. It's one of those tiny tasks that quietly eats your afternoon if you do it the hard way. Here's the fast way. Merging PDFs, Step by Step Open a free merge tool. Pick one that runs in your browser — no downloads, no sign-up forms. (If a site asks for your email before you've even merged anything, close the tab.) Drop in your PDFs. Drag and drop works, or click to browse. Add them in any order; you'll arrange them next. Arrange the pages. Drag thumbnails into the order you want. This is the step people skip and then reg...

How to Compress PDF Files Online Free Without Losing Quality

🚀 Try it now — free: Shrink your PDF in seconds with our free Compress PDF tool . Need to join files? Merge PDF Or pull pages out with Split PDF . How to Compress PDF File Size Without Losing Quality Your portfolio is ready. Forty pages of your best work. You hit attach, and Gmail just... stares at you. 85 MB. The job portal caps uploads at 10 MB. Your phone takes a full minute just to open the thing. We've all been here, and it's infuriating every single time. Good news: this is a five-minute fix, not a real problem. PDF compression squeezes out the bloat — oversized images, duplicate data, embedded junk — and a decent compressor does it without anything looking worse. Free, online, done. Compressing a PDF in 4 Steps Open a free compressor. Browser-based. Your phone's browser works fine — no app needed. Upload the monster file. It stays on your device during compression. (Sensing a theme with these tools? Good — privacy shouldn't be a premium feature.)...

How to Split PDF Pages Free: Extract Pages Online

🚀 Try it now — free: Split your PDF in seconds with our free Split PDF tool . Need to join files instead? Merge PDF Or make a file smaller with Compress PDF . How to Split PDF Pages Free Online Here's a situation: someone scanned an entire folder of receipts into one 40-page PDF, but accounting only needs three of them. Or you've got a 60-page manual and a friend asked for just one chapter. Emailing the whole thing feels wrong — and sometimes it actually is wrong, if the other pages contain stuff they shouldn't see. Splitting a PDF fixes this in seconds. You pull out exactly the pages you need into a fresh file. Free, no software, no account. Splitting a PDF, Step by Step Find a free splitter. Browser-based, no sign-up. You know the drill by now. Upload the PDF. Your file stays on your device with the good tools — worth repeating because people worry about this. Pick your pages. Click thumbnails or type ranges like 3–5. Visual thumbnails are ten times eas...

Search This Blog

⭐ Most Popular Tools