About DateToolsHQ

DateToolsHQ publishes browser-based calculators and reference pages. You enter dates, amounts, or times; the site returns an estimate based on clear rules described on each page.

The site is informational. It is not a payroll system, legal service, or financial advisor.

Date math shows up everywhere: project timelines, HR onboarding, lease move-ins, countdowns, and time-zone coordination. Spreadsheets work, but a focused calculator is often faster.

We aim to keep each tool simple, readable on mobile, and honest about what it can and cannot do.

Live tools today include calendar-day calculators, business and working day counters, countdown timers, date and time converters, country/year holiday summaries, and payroll helpers such as prorated salary, prorated rent, overtime pay, and weekly hours totals.

Browse the homepage or use search to find a calculator by name or keyword.

Results depend on the inputs you provide and the rules documented on each page. Holiday lists use simplified national calendars. Payroll tools return gross estimates only and do not apply taxes, benefits, or employer-specific policies.

Verify important outcomes with your own records, contracts, or qualified professionals. See our Disclaimer for more detail.

Questions, feedback, or correction requests are welcome. Visit the Contact page or email [email protected].