Free Local utilities

TTL calculator

Convert seconds, minutes, hours or days into a duration using exact whole-second arithmetic. Presets help with common values. No DNS lookup.

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Sources

How it works

Sources reviewed: Nov 6, 2026

How it works

Whole seconds are split into days, hours, minutes and remaining seconds using 86,400/3,600/60 seconds.

Assumptions and limitations

Maximum 9,007,199,254,740,991 seconds. This converts a duration; it does not look up DNS TTLs, cache expiry or record propagation.

How to use this tool

Choose a duration unit or preset, enter a nonnegative duration and Calculate. The converted total must be a whole number of seconds.

Worked example

Demonstration data only. Loading an example replaces the inputs but does not run the tool.

90061 s = 1 d + 1 h + 1 min + 1 s

Frequently asked questions

What should I check before using this result?

Maximum 9,007,199,254,740,991 seconds. This converts a duration; it does not look up DNS TTLs, cache expiry or record propagation.

Are my inputs or results saved automatically?

No. Processing stays in this browser and leaving the page clears the tool state. Copied or downloaded results remain under your control. Page-loading and privacy controls are described in the Privacy Policy.

Processing and privacy

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