Automatic estimate
When a chat is displayed as an international phone number, Local Time for WhatsApp Web – Contact Time Zone estimates a country and default time zone from its calling code.
Chrome extension for WhatsApp Web
Know their local time before you message.
Local Time for WhatsApp Web – Contact Time Zone shows a contact’s estimated local time and work-hour status directly in your WhatsApp Web chat list, helping international conversations start at a better moment.
Free Chrome extension
Every feature free · no limits
Independent software by NIUBIAPP. Not affiliated with, endorsed by, or sponsored by WhatsApp or Meta.
The right moment, visible at a glance
Spend less time calculating time zones.
Keep a useful time cue beside the conversation and reduce the chance of messaging customers, partners, or colleagues at an inconvenient hour.
Work-hour status
Clear status indicators show working hours, morning or evening, and night without opening a separate time-zone tool.
Manual overrides
Correct any estimate by assigning an IANA time zone to a contact. Overrides remain stored locally in Chrome.
How Local Time for WhatsApp Web – Contact Time Zone works
Time context inside the chat list.
No separate dashboard is required. Local Time for WhatsApp Web – Contact Time Zone works where international conversations already happen.
Open WhatsApp Web
Local Time for WhatsApp Web – Contact Time Zone runs only on web.whatsapp.com and watches the visible chat list for supported contact labels.
See local time
The estimated local time and status appear beside the contact, with daylight-saving time handled automatically.
Adjust when needed
Use the toolbar popup to select a time zone, switch between 12-hour and 24-hour formats, or remove an override.
Designed for international conversations
A time estimate you can control.
Local Time for WhatsApp Web – Contact Time Zone is useful for sales teams, support staff, exporters, founders, and anyone who regularly messages customers or partners across time zones.
A calling code indicates where a number is registered; it does not reveal a contact’s current physical location. Countries with multiple time zones use a default estimate until you choose a manual override.
- Assign an IANA time zone to correct an estimate.
- Export, import, or clear contact overrides from settings.
- Choose 12-hour or 24-hour display preferences.
Privacy details
Visible labels in. Time context out.
Phone-number parsing and time-zone estimation happen locally. Local Time for WhatsApp Web – Contact Time Zone reads only the visible chat-list labels and current-chat name needed to provide the feature.
No message collection
Local Time for WhatsApp Web – Contact Time Zone does not collect or transmit message text, images, files, WhatsApp credentials, cookies, or browsing history.
Local extension data
Contact labels, time-zone overrides, display preferences, and backup settings may be stored in Chrome extension storage. No trial or license state is required.
Controlled estimate
A calling code is not real-time location. Multi-time-zone countries use a default estimate that the user can correct.
No advertising profile
Local Time for WhatsApp Web – Contact Time Zone does not sell personal information, use it for advertising, or include analytics SDKs.
Free Chrome extension
Every feature is included at $0.
Automatic detection, work-hour status, display settings, contact overrides, and backup tools have no trial, subscription, or license limit.
Install from the Chrome Web Store and use every feature without a paid unlock.
Install freeSupport is voluntary and does not unlock, remove, or change any feature.
Support developmentLocal Time for WhatsApp Web – Contact Time Zone support
Questions about time-zone estimates?
Include the extension version, Chrome version, the displayed contact label, and a screenshot without message content or other sensitive information.
Support email
[email protected]