Work out hours, fast.

Time cards, overtime, countdowns and time-zone overlap. Every calculator runs in your browser, so nothing you type is sent to a server — and results stay in the link, so you can bookmark or share them.

• Work Hours→Time cards, hours between times, overtime and PTO accrual.
• Countdowns→Hours until any date, plus countdowns to the dates people actually search.
• Time Zones→Convert zones and find the working-hours overlap between cities.
• Travel→Compare flying against driving: distance, time and fuel cost.