Why lower a DNS TTL before making changes?

Lowering TTL in advance means cached DNS records expire faster everywhere, so when you do make a change (like switching servers), it propagates to users much more quickly.

What's a typical default TTL?

Many DNS providers default to 3,600 seconds (1 hour) or 86,400 seconds (24 hours) for most record types, balancing caching efficiency against flexibility to make changes.

DNS TTL to Hours Calculator

Convert a DNS record's Time To Live (TTL) value, which is normally set in seconds, into more human-readable hours and minutes — helpful when planning DNS changes and understanding propagation delays.

Inputs

Results

TTL in Hours: 24 hours
TTL in Minutes: 1,440 minutes

Try an example

Formula

Hours = TTL Seconds / 3,600

Learn How This Works

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