Time Tools Online Free
Dates and time zones, without the math
Free time utilities: plan meetings across time zones, add or subtract dates, and convert Unix timestamps — instantly, in your browser.
11 free tools · 100% browser-based · no sign-up
Meeting Planner
Meeting time & zones
Find a meeting time that works across time zones
Open toolDate Calculator
Start date & offset
Add or subtract days, weeks, months and years to any date
Open toolUnix Timestamp
Timestamp or date
Convert Unix time to human-readable dates and back
Open toolAge Calculator
Date of birth
Exact age in years, months and days — with next birthday
Open toolDays Until
Target date
Days, weeks and hours until any date
Open toolDay of Week
Date
What weekday was any date? Find out instantly
Open toolWeek Number
Date
ISO week number for any date
Open toolWorkdays
Date range
Weekdays and weekends between two dates
Open toolYear Progress
Today
What percent of the year has passed?
Open toolSeconds Converter
Seconds
Convert seconds into days, hours, minutes
Open toolISO 8601 Converter
Date or timestamp
Dates, ISO strings and Unix timestamps — all in one
Open toolWhy use time tools at Super Utility Hub?
Every time tools on Super Utility Hub runs 100% in your browser. Nothing is uploaded, nothing is stored, and nothing is installed — the results are generated instantly on your own device. There is no account to create, no file size limit, and no watermark on your output.
All tools are free forever, work on desktop and mobile, and are updated continuously. If a tool isn't listed yet, it's likely on the roadmap — check back soon.
Frequently asked questions
Are the time tools really free?
Yes. Every time tool is free with no limits, no trials, and no premium paywall. The site is supported entirely by advertising.
Do I need to create an account?
No account, no email, and no sign-up is required. Open a tool, use it, and you're done — that's it.
Is my data sent to a server?
No. All tools run locally in your browser. Your files and input never leave your device.
Do the tools work on mobile?
Yes. Every tool is responsive and works in any modern browser on Android and iOS.