❓ FAQ – Time Difference & Countdown
Does this tool require internet or uploading?
No. Everything is computed locally in your browser. No data leaves your device.
How do I use the countdown feature?
Just set the “End Date & Time”. The countdown will show time remaining from now.
What happens if I set both Start and End times?
You’ll see both the time difference and a countdown (if the Start is now or earlier).
Can I calculate negative differences?
Yes. If the End time is earlier than the Start, the result will be negative (with a “-” sign).
Is this mobile-friendly?
Yes! The tool is responsive and works on phones, tablets, and desktops.