World Clock
Live city clocks, business-hour badges and city group comparisons.
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TimeNexus
Time, date and unit helpers that work in the browser.
Convert time zones, date spans, business days, timestamps, ages, percentages and everyday units without mandatory signup.
World clock planner
Plan one meeting across cities before opening the catalog.
Set a local meeting time, compare it across common business zones and see which slots stay inside working hours.
Times are calculated in the browser. No city, date or time is saved by TimeNexus.
World Clock, Time Zones, Calendar, Calculators and Timers
Jump directly into the time, date and converter tool that matches the task.
Time Zones
Meeting conversion, UTC views and timestamp formats.
Calendar
Date spans, weekday counts and birthday calculations.
Calculators
Percentage and unit helpers for quick browser-side math.
Timers
Use the current time panel and meeting planner when you need a quick live reference.
Curated city clocks
Start with a reviewed city page, then open the planner for the same IANA time zone and related collaboration hubs.
City time guideNew YorkAmerica/New_YorkOpen city guideCity time guideSao PauloAmerica/Sao_PauloOpen city guideCity time guideLondonEurope/LondonOpen city guideCity time guideBerlinEurope/BerlinOpen city guideCity time guideSan FranciscoAmerica/Los_AngelesOpen city guideCity time guideTokyoAsia/TokyoOpen city guideCity time guideSingaporeAsia/SingaporeOpen city guideCity time guideSydneyAustralia/SydneyOpen city guide
Time zonesBrowser-side
Time Zone Converter
Convert a local meeting time or UTC instant across two named IANA time zones.
- Free result
- Format one instant across two IANA time zones with UTC included.
- Optional account features
- Embeddable widgets, saved zone presets, shared calendars, alerts and API conversion.
DatesBrowser-side
Date Difference Calculator
Measure days, weeks and approximate months between two dates.
- Free result
- Calendar-day difference, weeks and approximate months for one date pair.
- Optional account features
- Saved presets, recurring spans, team export and API access.
Business daysBrowser-side
Business Days Calculator
Count Monday to Friday business days between two dates.
- Free result
- Inclusive Monday-Friday count for one date range, with weekend count disclosed.
- Optional account features
- Regional holiday calendars, SLA rules, saved calendars, monitoring and API.
TimestampsBrowser-side
Timestamp Converter
Convert Unix seconds, Unix milliseconds and date strings into readable time values.
- Free result
- Unix seconds, milliseconds, ISO, UTC, local display and optional named zone display.
- Optional account features
- Preset widgets, batch conversion, monitoring and API.
DatesBrowser-side
Age Calculator
Calculate age in years, months and days on a reference date.
- Free result
- Age as years, months, days, total days and reference date for one person/event.
- Optional account features
- Saved profiles, reminders, team records, export and API.
PercentagesBrowser-side
Percentage Calculator
Calculate percent-of, percent change and add-percent scenarios.
- Free result
- One percent-of, percent-change or add-percent calculation with formula display.
- Optional account features
- Bulk sheets, saved formulas, collaboration and API.
UnitsBrowser-side
Unit Converter
Convert common length, weight and temperature units locally.
- Free result
- Common km, mi, kg, lb, Celsius and Fahrenheit conversions for one value.
- Optional account features
- Custom unit sets, engineering presets, widgets and API.
Operating principles
Immediate answer
Each page starts with a working calculator or converter that solves the basic task for free.
Locale aware
Outputs name UTC, local and selected zones clearly so date math stays readable across languages.
Account options
Advanced features belong in widgets, API automation, presets and collaboration.
Support
Keep this free result available
The free tool stays available without signup. Bookmark this page, share it when useful or send corrections from the contact page.
- Useful result first
- No signup required
- Promotions kept separate
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