Time and Duration Tools

What it does

Free online Time Duration Calculator. Calculate hours, minutes, and seconds between two times or dates. Instant time difference, working hours with lunch breaks, countdowns, and age duration calculator.

Calculate time differences, add or subtract dates, track work hours, and convert time zones — free, instant, and accurate. No signup needed.

Fast, accurate tools for anything involving time — elapsed hours, date math, work shifts, and time zones. Pick a calculator below and get your answer in seconds. Not sure which calculation you need, or want to understand the math behind it? These guides walk through the formulas step byfrom timeandduration.com

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