• Made for Australians

Australia's Free Calculator Hub

Calculate tax, salary, GST, mortgages, fuel costs and more with free Australian tools.
  • Privacy-first
  • Instant results
  • ATO rates 2024–25
  • Always free

Most Popular Calculators

The tools Australians use every day.
View all
  • Finance

Tax Calculator

Estimate your Australian income tax for 2024–25 with ATO rates.
Open calculator
  • Finance

Salary Calculator

Convert annual salary to weekly, fortnightly and hourly pay.
Open calculator
  • Finance

GST Calculator

Add or remove 10% GST from any amount instantly.
Open calculator
  • Finance

Mortgage Calculator

Estimate home loan repayments at current Australian rates.
Open calculator
  • Finance

Fuel Cost Calculator

Estimate trip and weekly fuel costs from L/100km.
Open calculator

Browse by category

Every calculator, organised.

Finance

Tax Calculator
GST Calculator
Salary Calculator
Overtime Calculator
Savings Calculator
Compound Interest Calculator

Property

Mortgage Calculator
Home Deposit Calculator

Vehicles

Fuel Cost Calculator
Car Loan Calculator

General

Age Calculator
Percentage Calculator

Frequently asked questions

Everything you need to know about CalcAussie.
Are CalcAussie's calculators free to use?
Yes — every calculator on CalcAussie is 100% free, with no sign-up, no ads inside the tools and no limits on usage.
Our income tax calculator uses the ATO’s 2024–25 resident tax brackets, including the 2% Medicare levy. We review rates each financial year.
No. All calculations run instantly in your browser. Nothing you type is sent to a server or saved to your account.
Absolutely. Every page is mobile-first and works on iOS, Android, tablets and desktops.
No. CalcAussie provides general estimates only. For decisions about tax, loans or investments, speak to a licensed Australian professional.