Tools / Converters

Time Converter

From seconds to years — convert instantly.

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Tool info

Category Converters

Processing Directly in your browser

Data storage Not stored

Updated 2026-08-30

Enter the time value you want to convert.

Pick the source and target units to see the result instantly.

Tap the ⇄ button to swap the source and target units.

Q1. How are month and year calculated?

Since months vary from 28 to 31 days, this tool uses an average of 30.44 days per month and 365.2425 days per year.

Q2. How many seconds are in a day?

One day equals 86,400 seconds (24 hours × 3,600 seconds).

Q3. How many days are in 3 weeks?

Pick week as the source and day as the target, enter 3, and you instantly get 21 days.

Q4. How many decimal places are shown?

Results are shown with up to 6 decimal places. Units based on averages, like month and year, can carry very small discrepancies.

Q5. Is my input sent to a server?

No. All calculations happen entirely in your browser and are never sent to or stored on a server.

This page participates in the Coupang Partners program and may earn a commission from qualifying purchases.