Calculator Tools Australia is a free collection of 37+ online calculators and utilities designed to make everyday tasks easier — from pay, GST, loan and mortgage calculations to text formatting, image processing, PDF management, password generation, and time conversion.

Our Mission

We believe useful tools should be accessible to everyone, without sign-ups, subscriptions, or hidden tracking. Every tool on Calculator Tools Australia runs entirely in your browser — your files, text, and personal numbers never leave your device. Whether you are checking a payslip against the latest ATO brackets, working out GST on an invoice, compressing photos before an email, or merging a stack of PDFs, the tool you need is one click away and always free.

Why Choose Calculator Tools Australia?

All tools are 100% free with no registration required. Your data stays private because processing happens locally in your browser, not on a remote server. The interface works seamlessly on desktop, tablet, and mobile devices, and we are constantly adding new utilities and improving the existing ones based on user feedback. Australian-specific tools — pay calculator, GST calculator, mortgage calculator — are kept in step with the latest ATO and Reserve Bank of Australia figures.

Categories

The site is organised into six categories: Calculators (pay, GST, loan, mortgage, percentage, age, sleep and more), Text Tools (word counter, paraphraser, grammar checker, summariser), Image Tools (compressor, resizer, background remover, OCR), PDF Tools (merge, split, compress, convert, watermark, eSign), Media Tools (GIF maker, video to MP3) and Security Tools (password generator, strength checker, random string generator).

Get in Touch

Have a suggestion, found a bug, or want to request a new tool? Visit our Contact page — we'd love to hear from you.