Calculators and Conversion Tools
The HelloSafe team has developed free online calculators and tools to help you manage your business, your expenses and more generally your daily life.
Our calculators for businesses and workers
Below, you will find all our calculators designed for businesses, self-employed workers, employees and entrepreneurs. They're free to use and give you instant results.
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Invoice Generator
Create invoices in seconds. It's online, free. Download as a PDF.
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Percentage Calculator
Calculate the percentage of an amount with our calculator.
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Average Calculator
Calculate a weighted average with our online calculator.
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Hourly Wage to Annual Salary Calculator
Calculate a weighted average with our online calculator.
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Take-home Pay Calculator
Discover in seconds your take-home pay.
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Sales Tax Calculator
Calculate your sales tax in seconds.
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Car Sales Tax Calculator
Quickly calculate the sales tax for your vehicle.
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Debt Ratio Calculator
Calculate your debt ratio in seconds.
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Real Estate Profitability Calculator
Calculate potential rental property returns in seconds.
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Property Tax Calculator
Estimate your property tax in seconds.
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Inflation Calculator
Calculate inflation between years.
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Freelancer Salary Calculator
Calculate your annual salary from your day rate.
Our converters
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Convert cm to inches
Convert centimetres to inches.
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Convert feet to metre
Convert centimetres to inches.
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Convert square meters to square feet
Convert square meters into square feet.
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Convert Kilos/Pounds
Convert kilos to pounds and the other way around in seconds.
Our calculators for health and well-being
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BMI Calculator
Calculate your Body Mass Index in 10 seconds.
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Ovulation Tracker
Anonymously track your cycle.
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How Old Am I Calculator
Find out your age in months, days, hours and minutes.
Our other calculators
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Blood Alcohol Level
Calculate your blood alcohol level with our online calculator before driving.
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Date Calculator
Calculate the time between two dates in seconds.
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Gas Consumption
Calculate your gas budget according to your journey, online.
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Internet Speed Test
Calculate the speed of your internet, online.
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Student Loan Calculator
Calculate student loan payments and amortization.
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HELOC Calculator
Calculate how large a HELOC you can get in seconds.