🧰 Everyday, Units & Time
Everyday practical tools — unit conversions, world clocks and time math, location and country lookups, plus handy device utilities.
18 free tools across 3 categories.
Time, Date & Location (10 tools)
Age Calculator
Calculate exact age in years, months, and days.
Coordinate Converter
Convert coordinates between DD, DMS, DDM, and UTM formats instantly. All four formats on one screen with live, buttonless conversion.
Countdown Timer
Set a date and time, get a live countdown. Embeddable.
Country Code Lookup
Look up ISO alpha-2, alpha-3, dialing codes, country TLDs, and currency codes for 250 countries. Search, sort, and copy with one click.
Date Difference Calculator
Days between dates. Business days, years, weeks.
Distance Calculator
Calculate straight-line distance between any two points on Earth. Coordinates or cities — instant km, miles, nmi.
Stopwatch
Online stopwatch with lap timing. Millisecond precision.
Sunrise & Sunset Calculator
Calculate sunrise, sunset, golden hour and blue hour for any city. Pure client-side astronomy — no sign-up.
Time Zone Converter
Convert time between any two IANA time zones. Meeting planner mode finds overlapping business hours. EST→IST, UTC→Tokyo, instant, no signup.
World Clock
Track time across multiple cities. Search, add city clocks. Day/night indicators, UTC offsets. Free world clock.
Practical & Device Tools (7 tools)
Dead Pixel Test
Full-screen color test for your screen. No ads during the test.
Emoji Copy & Paste
Free emoji picker to copy and paste emojis instantly. Browse 1,800+ emojis across 9 categories. No app, no keyboard needed.
Meeting Cost Calculator
Calculate meeting costs instantly — total, per-minute, hourly rate, and annualized for recurring meetings. Supports USD, EUR, GBP, TRY. Free, client-side, no signup.
Percentage Calculator
Quick percentage calculations — find % of, what %, % change, reverse %. Free, no signup.
Pomodoro + Task Tracker
Pomodoro timer + task list. Progress tracking.
Pomodoro Timer
Focus timer with clean design. No ads interrupting your flow.
Spirit Level
Use your phone as a bubble level. Perfect for hanging pictures.
Unit Conversions (1 tools)
How to Choose the Right Tool
| Your goal | Use this tool |
|---|---|
| Convert between metric and imperial units | Unit Converter |
| Plan a meeting across time zones | Time Zone Converter |
| Track multiple city times at a glance | World Clock |
| Check your screen for dead pixels | Dead Pixel Test |
| Level a picture frame or shelf | Spirit Level |
| Calculate exact age in years, months, days | Age Calculator |
Frequently Asked Questions
How do I convert between metric and imperial units?
The Unit Converter covers six measurement categories — length, weight, temperature, area, volume and speed — with 30 units in total. The common metric↔imperial pairs are all there: centimeters and inches, kilograms and pounds, liters and gallons, and cups and milliliters for cooking. Pick a category, type a value, and every unit in that category updates at once. The conversion math runs entirely in your browser — no API call, no server round-trip.
What's the difference between the World Clock and the Time Zone Converter — which one should I use?
The World Clock displays current time across multiple cities simultaneously with day/night indicators and UTC offsets — use it as a persistent dashboard to monitor time zones at a glance. The Time Zone Converter is for scheduling: pick two IANA time zones and it finds overlapping business hours, making it ideal for planning meetings across EST↔IST or UTC↔Tokyo. Use World Clock for awareness, Time Zone Converter for coordination.
How accurate is the Sunrise & Sunset Calculator — does it account for my exact location?
The Sunrise & Sunset Calculator uses pure client-side astronomy calculations based on your selected city's coordinates. It returns sunrise, sunset, golden hour, and blue hour times — all computed locally without any API calls. Accuracy is within ±1-2 minutes for most locations, sufficient for photography planning, outdoor scheduling, and general reference.
Can I use the Spirit Level without installing an app — how does it access my phone's sensors?
Yes. The Spirit Level uses the browser's DeviceOrientation API, which most modern mobile browsers support (Chrome, Safari, Firefox on Android and iOS). Open the page on your phone, grant the motion sensor permission when prompted, and the tool displays a real-time bubble level using your device's built-in accelerometer. No app install, no sign-up.
Age Calculator vs Date Difference — when should I use one over the other?
The Age Calculator computes the exact elapsed time between a birth date and today — output in years, months, and days with calendar-aware precision. The Date Difference Calculator handles any two arbitrary dates and adds business day calculations, making it better for project planning, event countdowns, and deadline tracking. Use Age Calculator for personal age queries, Date Difference for general date math.