Hours to Seconds converter

Convert hours (h) to seconds (s). Exact: 1 h = 3600 s.

Converter tool

Formula: s = h × 3600

Quick examples

HoursSeconds
0.25900.0
0.51800.0
13600
27200
310800
414400
828800
2486400

How to convert Hours to Seconds

Formula: s = h × 3600.

Reverse conversion: h = s ÷ 3600

Tip: Use the swap button to reverse the calculation instantly.

Hours → Seconds FAQs

What definitions are used?

Exact: 1 min = 60 s; 1 h = 60 min; 1 d = 24 h; 1 wk = 7 d. For years we use 365 d = 1 yr.

How do I go the other way?

h = s ÷ 3600

Are the results rounded?

Calculations use exact constants; values are displayed with sensible rounding for readability.