Productivity Tools

Free browser-based productivity utilities — plan schedules and compare dates instantly on your device.

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Date Difference

Days, weeks and months between two dates

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Time Zone Converter

Convert time between world time zones

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Cool Tips

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Productivity Tools — Guides

Toolzilla's Productivity Tools help remote workers and freelancers plan across time zones and date ranges. Calculate days between project milestones, convert meeting times for international clients, and stay organised without installing calendar apps.

Date Difference — How to Use

Calculate days, weeks, and months between two calendar dates.

Select a start date and end date.
View the difference in days, weeks, and months.
Use for project timelines and contract durations.

Tip: Count business days manually for payment terms — this tool counts calendar days.

Time Zone Converter — How to Use

Convert a time from one world time zone to another.

Select source and target time zones.
Enter the time to convert.
View the equivalent local time for scheduling calls.

Tip: Always confirm DST offsets when scheduling recurring international meetings.

Frequently Asked Questions

Do time zone conversions account for daylight saving?

The converter uses current time zone rules. Verify critical appointments around DST changeover dates.

Can I calculate business days only?

The date difference tool counts all calendar days. Exclude weekends manually for business-day estimates.

Are my dates stored?

No. All calculations happen locally in your browser.

PRODUCTIVITY TOOLS