Simple Tools for Daily Tasks
Accurate, privacy-friendly calculators that work instantly on any device.
Date & Time
Age Calculator
Calculate precise age in years, months, and days. See your next birthday countdown.
Date Calculator
Find the difference between two dates or add days/weeks/months to a date.
Time Zone Converter
Easily convert meeting times between any two cities worldwide.
Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Converters
Aspect Ratio
Calculate ratios for images and video. Resize dimensions while keeping ratio.
Unit Converter
Convert length, mass, temperature, area, volume, speed, and data units.
Binary & Hex
Translate text to binary, or convert numbers between Decimal, Hex, and Octal.
Currency Converter
Live exchange rates for major world currencies.
About Everyday Calculators
Everyday Calculators is a free collection of online tools designed for common tasks involving dates, times, conversions, and number systems. Every calculator runs entirely in your browser — no data is sent to any server, and no personal information is collected or stored. The tools work on desktops, tablets, and phones.
Available Tools
The collection includes eight calculators organized into two categories. The Date and Time tools cover age calculation, date differences, time zone conversion, and Unix timestamp translation. The Converter tools handle aspect ratio computation, unit conversion across seven measurement categories, number base conversion between decimal, binary, hexadecimal, and octal, and live currency exchange rates from the European Central Bank.
How to Use
Select any calculator from the grid above. Each tool page includes clear input labels, an explanation of the method used, at least one worked example, and a list of frequently asked questions. Results appear instantly and can be copied to your clipboard with one click.