Free Calculators & Conversion Tools Online

At HelloSafe Australia, we know that handling finances—whether for personal budgeting, business management, or investment tracking—can sometimes feel overwhelming. That’s why we’ve developed two free, easy-to-use online calculators to help you make accurate calculations quickly, without the hassle of complex formulas or spreadsheets.

Whether you're a business owner tracking sales, a homebuyer calculating mortgage repayments, or a student checking grade percentages, our tools provide instant results with just a few clicks.

Here’s how our Average Calculator and Percentage Calculator can make your life easier:

Average Calculator: Instantly Find the Mean Value

Ever needed to quickly find an average but found yourself adding numbers and dividing manually? Whether you’re analysing exam scores, business profits, or fitness progress, our Average Calculator does the work for you—instantly and accurately.

How It Works:

Simply enter a set of numbers, and the tool will calculate the mean (average) in seconds. This is perfect for:

• Students and teachers calculating grade point averages (GPA).
• Investors tracking stock market returns over time.
• Business owners calculating average sales or expenses over different periods.
• Sports fans analysing player performance statistics.

Calculating an Average Price

Let’s say you’re tracking the average fuel price over five months:

• January: $1.75 per litre
• February: $1.80 per litre
• March: $1.78 per litre
• April: $1.72 per litre
• May: $1.79 per litre

Instead of manually adding and dividing, enter these numbers into our Average Calculator, and you’ll instantly get the result: $1.768 per litre. No need for spreadsheets or complicated formulas!

Try our Average Calculator now and make quick, hassle-free calculations!

Percentage Calculator: Easily Calculate Increases, Decreases & More

Percentages are everywhere—from sale discounts to tax calculations, investment returns, and loan interest rates. Our Percentage Calculator helps you accurately determine percentage increases, decreases, and differences—saving you time and effort.

How It Works:

Simply enter the values, and our tool will instantly generate the percentage result. This is ideal for:

• Shoppers calculating discounts and final sale prices.
• Homeowners estimating mortgage interest rate changes.
• Business owners measuring profit margins and revenue growth.
• Taxpayers calculating GST
• (Goods & Services Tax) or PAYG tax contributions.
• Investors tracking percentage gains or losses in stocks or property investments.

Finding a Discounted Price

You’re shopping at JB Hi-Fi, and a laptop originally priced at $1,500 is 20% off.

Instead of manually calculating, enter the:

• Original price: $1,500
• Discount percentage: 20%

Our percentage calculator will instantly show:

• You save $300
• The final price is $1,200

With HelloSafe’s free online calculators, you can quickly and accurately calculate averages and percentages without the stress of manual maths. Whether you’re budgeting, shopping, investing, or studying, our tools make calculations fast and effortless.

We also tell you how to create your own tools on Excel in our guides.

Jennifer Taylor

Personal finance writer

Jennifer is an Australian personal finance writer passionate about helping people take control of their financial lives. She holds a degree in Economics from the University of Melbourne and completed a postgraduate diploma in Financial Planning at UNSW. Before joining HelloSafe, she worked in both consumer finance and digital publishing, focusing on simplifying complex financial topics for a wider audience. At HelloSafe, Jennifer creates clear and practical content about insurance, loans, savings, and budgeting—tailored to the realities of everyday Australians looking to make smart money decisions.