Free online calculators & tools

Free Online Calculators &
Everyday Tools.

CalcuHive is a growing collection of free online calculators and browser-based tools for finance, tax, math, health, conversions, and everyday tasks. Get fast, easy-to-use results with no sign-up required.

Browse Calculators Browse Tools
100% free, no sign-up
Runs in your browser
Mobile-friendly
Popular calculators

Explore popular calculators for GST, discounts, percentages, finance, math and other everyday calculations. More free calculators are added regularly.

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GST Calculator

Calculate 10% GST, add GST to a price, or remove GST from an amount quickly and easily.

Open GST calculator
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Discount Calculator

Calculate sale prices, percentage discounts and total savings to quickly see how much you can save.

Open discount calculator
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Percentage Calculator

Find a percentage of a number, calculate percentage change, and solve common percentage problems.

Open percentage calculator
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Popular online tools

Use fast, browser-based tools for PDFs, images, QR codes and other everyday digital tasks without unnecessary sign-ups.

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Merge PDF

Combine multiple PDF files into one document directly in your browser without uploading your files.

Open Merge PDF
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Image Compressor

Compress JPEG, PNG and WebP images to reduce file size while keeping your images practical for web use.

Open image compressor
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QR Code Generator

Create custom QR codes with your own colors, logo and downloadable formats for everyday use.

Open QR code generator
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Why CalcuHive

Simple, Fast and Useful Online Calculators

CalcuHive focuses on making everyday calculations and digital tasks easier with practical online tools.

01

Built for speed

Calculate or convert as you go with tools designed to provide quick results without unnecessary page reloads.

02

Private by design

Many tools run directly in your browser, helping keep your files and entered data on your device when supported by the tool.

03

Always free

Use CalcuHive calculators and everyday tools without creating an account or dealing with unnecessary paywalls.

04

Growing regularly

New calculators and digital tools are added regularly to expand the collection and cover more everyday needs.

Which Calculator or Tool Should We Build Next?

Tell us what calculator or online tool would be useful to you. Your suggestions help shape the future of CalcuHive.