Global Converters & Time

Units, Time & Date Calculators

The ultimate conversion hub. Calculate exact business days, estimate global download speeds, and seamlessly switch between metric and imperial units.

Time & Date Logic Milestones & Productivity Core Unit Converters Digital & Tech Metrics Physics & Engineering

Time & Date Logic

POPULAR

Date Difference Calculator

Find the exact years, months, and days between dates.

Time Duration Calculator

Add or subtract exact hours, minutes, and seconds.

TRENDING

Working Days

Exclude weekends and public holidays from timelines.

Age Calculator

Your exact age down to the second.

Global Time Zone Converter

Coordinate international meetings instantly.

Leap Year Checker

Instantly verify leap years past, present, and future.

Add Subtract to Date

Find what the date will be 180 days from today.

Milestones & Productivity

POPULAR

Timesheet Billable Hours

Calculate gross pay based on clocked time intervals.

Countdown Timer

Customizable ticking clocks for events and deadlines.

Stopwatch Lap Timer

Precision digital stopwatch with lap export features.

VIRAL

Golden Half Birthday

Find exactly when you turn 10,000 days old.

NEW

Pomodoro Productivity Timer

25/5 minute interval timers for deep work focus.

Core Unit Converters

All-in-One Unit Converter

The master tool for switching metric and imperial.

POPULAR

Length Distance

Millimeters, Inches, Feet, Miles, and Kilometers.

Weight Mass

Grams, Ounces, Pounds, Kilograms, and Tons.

Temperature Converter

Instantly switch between Celsius, Fahrenheit, and Kelvin.

Volume Capacity

Cups, Gallons, Liters, and Fluid Ounces.

Area Land Size

Square feet, Acres, Hectares, and Square meters.

Height Converter

Convert 5'11" to centimeters instantly for forms.

Digital & Tech Metrics

TRENDING

Data Transfer Speed

Convert Mbps to MB/s to estimate download times.

Data Storage Converter

Megabytes, Gigabytes, Terabytes, and Petabytes.

NEW

Pixels to REM EM

CSS unit conversion tool for web developers.

Aspect Ratio Calculator

Resize images while maintaining perfect proportions.

Crypto Hash Rate

TH/s to PH/s conversion for cryptocurrency mining.

Physics & Engineering

Speed Pace

MPH, KM/H, Knots, and athletic running pace.

Energy Power

Convert Joules, Watts, Calories, and BTUs.

Pressure Converter

PSI, Bar, Pascals, and Atmospheres (atm).

Force Converter

Newtons, Dyne, and Pound-force calculations.

Fuel Efficiency

Convert US MPG to UK MPG and Liters/100km.

Density Converter

Calculate mass divided by volume conversions.

Measurement Rules of Thumb

The Metric Water Hack

The metric system is perfectly intertwined. For pure water, 1 liter equals exactly 1 kilogram in weight, and occupies exactly 1,000 cubic centimeters of space.

Fahrenheit to Celsius

A quick mental shortcut: To estimate Celsius from Fahrenheit, subtract 30 and divide by two. (e.g., 70°F - 30 = 40. Half of 40 is 20°C. The exact answer is 21°C).

The "8" Rule for Bytes

Internet speeds are measured in bits, but file sizes are measured in bytes. Always divide your advertised internet speed by 8 to find your true megabyte download speed.

Time & Payroll Disclaimer

Timesheet and billable hours tools provide estimations based on the exact time inputs provided. Rounding rules (e.g., rounding to the nearest 15 minutes) vary by company and local labor laws. Always verify your calculated timesheet totals with your official HR or payroll department before submitting invoices.

Frequently Asked Questions

How do you calculate business days vs. regular days?

Regular day calculations (calendar days) simply count every day between two dates. Business day calculations automatically subtract weekends (typically Saturday and Sunday) and can be customized to exclude specific national or federal public holidays.

What is the difference between Mbps and MB/s?

This is the most common internet speed confusion! Mbps stands for Megabits per second (used by ISPs to advertise speed), while MB/s stands for Megabytes per second (used by computers to show download progress). There are 8 bits in a byte, so 100 Mbps is actually only 12.5 MB/s.

How accurate is the exact age calculator?

Our exact age calculator accounts for leap years and the varying number of days in different months to give you a mathematically precise calculation of your age in years, months, days, hours, and even seconds.