Calculators and Conversion Tools
The HelloSafe team has developed free online tools to help you manage your business, your expenses and more generally your daily life.
Summary
Our calculators for businesses and workers
Invoice generator

Create invoices in seconds online for free. Download as a PDF.
Percentage calculator

Calculate the percentage of an amount with our calculator.
Average calculator

Calculate a weighted average with our online calculator.
Hourly wage to annual salary calculator

Calculate a weighted average with our online calculator.
Take-home pay calculator

Discover in seconds your take-home pay.
Sales tax calculator

Calculate your sales tax in seconds.
Car sales tax calculator

Quickly calculate sales tax for your vehicle
Debt ratio calculator

Calculate your sales tax in seconds.
Real estate profitability calculator

Calculate potential rental property returns in seconds.
Property tax calculator

Estimate your property tax
Inflation
calculator

Calculate inflation between years
Freelancer Salary Calculator

Calculate your annual salary from your day rate.
Our converters
Convert cm / inches

Convert centimetres to inches.
Convert feet / metre

Convert centimetres to inches.
Conversion square meters / square feet

Convert square meters into square feet.
Convert kilos / pounds

Convert kilos to pounds and the other way around in a few seconds.
Our calculators for health and well-being
BMI Calculator

Calculate your Body Mass Index in 10 seconds.
Ovulation Tracker

Anonymously track your cycle
How Old Am I Calculator

See you age in months, days, hours and minutes
Our other calculators
Blood alcohol level

Calculate your blood alcohol level with our online calculator before driving.
Date calculator

Calculate the time in-between two dates in seconds.
Gas consumption

Calculate your gas budget according to your journey, online.
Internet Speed Test

Calculate the speed of your internet, online.
Student loan calculator

Calculate student loan payments and amortization
HELOC calculator

Calculate how large a HELOC you can get