Time tools - Free Online

Are you familiar with the situation when the standard timer on the phone is inconvenient for working at a computer, is interrupted by advertisements, or does not let you record lap time comfortably?

Our time tools category brings together simple, clear, and fast timing utilities. Timers and stopwatches work autonomously and continue working even without Internet access.

Use them for the Pomodoro method, workout duration, interval tracking, and everyday time control.

Time tools in this category

22 tools

⭐

Age Calculator — How Old Am I?

Calculate your exact age in years, months and days from your date of birth, plus a countdown to your next birthday.

Exact age in years, months and days with leap years handled correctly.
Total full months, weeks and days lived since birth.
Next birthday date, days remaining, and the age you will turn.

⭐

Online Alarm Clock

Set a wake-up time and get a live countdown, a looping generated melody, a full-screen notice and a blinking tab title when the moment arrives — right in the browser tab.

HH:MM time input with automatic today/tomorrow targeting and a live hours:minutes:seconds countdown.
Looping WebAudio melody re-signalled every 30 seconds until Stop — generated, not an audio file.
Full-screen wake-up notice, blinking document title and a countdown mirrored into the tab title.

⭐

Birth Year Calculator

Find the year someone was born from their current age — with both possible years shown when you are not sure whether their birthday has passed.

Birth year from age with a yes / no / not-sure birthday switch.
Both candidate years with their formulas when the birthday status is unknown.
Current year read at run time from your device — never a stale baked-in year.

⭐

Business Days Calculator

Count weekdays between two dates while excluding weekends and an optional custom holiday list.

Monday-to-Friday business-day count
Custom holiday exclusions
Inclusive or exclusive start and end dates

⭐

Monthly Calendar Generator

Generate a clean monthly calendar with Monday or Sunday as the first day of the week and print it.

Monday-first or Sunday-first weeks
Localized month and weekday labels
Printable calendar grid

⭐

Chronological Age Calculator (Y;M;D)

Calculate exact chronological age as of any reference or test date — not just today — in the clinical Y;M;D notation used on assessment forms, with the borrow-method steps shown.

Date of birth plus a freely editable reference/test date (defaults to today)
Exact age with no rounding, in both Y;M;D clinical notation and a readable sentence
Transparent borrow-method breakdown: day borrow, month borrow, and the resulting years/months/days

⭐

Countdown Timer

Simple and stylish countdown timer with completion sound.

Start, pause, reset, and adjustment controls
Readable timing display
Local session state with no account required

⭐

Add or Subtract Dates

Move a calendar date forward or backward by a chosen number of days, weeks, months, or years.

Add or subtract calendar units
Days, weeks, months, and years
End-of-month-safe arithmetic

⭐

Date Difference Calculator

Calculate the exact distance between two calendar dates in days, weeks, months, and years.

Total days between dates
Weeks and remaining days
Years, months, and days breakdown

⭐

Day of the Week Calculator

Find the weekday for any date plus its ordinal day and the days remaining in that year.

Localized weekday name
Ordinal day of year
Days remaining in year

⭐

Days Until Calculator

See how many days are left until any date or holiday — Christmas, New Year, Halloween, Valentine's Day or next Friday — counted live in your browser.

Countdown to a specific calendar date or a built-in holiday, always resolved to its next occurrence.
Result in days plus a weeks-and-days breakdown and the target's full weekday date.
A cheerful "it's today!" message when the chosen day is the current date.

⭐

Meeting Time Planner

Compare one proposed meeting time across an organizer and two attendee time zones.

Three-zone meeting comparison
Local date and time for every participant
Business-hours indicator

⭐

Military Time Converter

Convert military (24-hour) time to regular 12-hour AM/PM time and back, with a full 24-row reference chart.

Two-way conversion between 24-hour military and 12-hour AM/PM time.
Flexible parsing: 1730, 17:30, 930, 5:30 PM and bare hours all work.
Built-in 24-hour reference chart with midnight and noon notes.

⭐

Pomodoro Timer

Stay focused with timed work sessions and automatic short and long breaks, complete with a gentle beep and a live countdown in the tab title.

Adjustable work, short-break and long-break durations plus a configurable long-break interval.
Large time display with the current session type and a completed-pomodoros counter.
Subtle WebAudio beep on every phase change — no audio files, no volume spikes.

⭐

Stopwatch

Time yourself to the millisecond by recording laps, locally in your browser.

Start, pause, reset, and adjustment controls
Readable timing display
Local session state with no account required

⭐

Time Duration Calculator

Hours and minutes between two clock times — overnight included — plus adding or subtracting hh:mm durations.

Time between two clock times with optional break
Add or subtract two hh:mm durations
Results in hh:mm, decimal hours, and minutes

⭐

Time Unit Converter

Convert time units instantly: milliseconds, seconds, minutes, hours, days, weeks, average months and years, with a live hh:mm:ss readout.

Eight units: milliseconds, seconds, minutes, hours, days, weeks, average months and years.
Two-way live fields with one-click unit swap and a composite hh:mm:ss line.
Common-values table that follows your selected units.

⭐