# Convert seconds to hours

Enter the number of seconds you want to convert to hours in the text box below. The conversion to time in hours will update as you type.

seconds (s)
1 seconds = 2.778×10-4 hours

## Precise decimal and fraction answers

The conversion in hours rounded to six significant decimal places is 1 s = 0.000277778 h. The precise fraction answer is 1/3600 h.

### Decimal Precision

Conversion from one to ten decimal places

• 1 s = 0.0003 h
• 1 s = 0.00028 h
• 1 s = 0.000278 h
• 1 s = 0.0002778 h
• 1 s = 0.00027778 h
• 1 s = 0.000277778 h
• 1 s = 0.0002777778 h
• 1 s = 0.00027777778 h
• 1 s = 0.000277777778 h
• 1 s = 0.0002777777778 h

## Seconds to hours conversion factor and formulas

Formula

The conversion factor between seconds and hours is 3,600. This represents the ratio of seconds per one hour. To calculate the value in hours, we can either divide by the conversion factor or multiply by its inverse.

### Division

To convert from seconds to hours, divide seconds by 3,600.
The formula is expressed as:
s ÷ 3,600 = h

### Multiplication

Alternatively we can multiply by the inverse conversion factor to get the same result.
The inverse of 3,600 is 1/3,600 or 0. To convert from seconds to hours, multiply seconds by 0.
The formula is expressed as:
s × 0 = h

A conversion from seconds to hours are units within in the metric (SI) or SI compatible systems.

SI Unit

The second is a base measure of time in the SI and Imperial systems of measurement. Its definition is based on the frequency of a caesium-133 atom. The formal scientific definition is "the fixed numerical value of the caesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s-1". In common terms a second is 1/60th of a minute or 1/86,400th of a day.

SI Unit

An hour is a unit of time measurement equivalent to sixty minutes or 1/24th of a day. The hour is not officially part of the SI system, however it is fully compatible with and commonly used when performing both metric and Imperial measurements.

## Reverse this conversion

Convert from hours to seconds instead.

## 1 seconds to other time units

### Metric

• 1 s = 1.157×10-5 d
• 1 s = 2.778×10-4 h
• 1 s = 0.017 min
• 1 s = 1 s
• 1 s = 1,000 ms
• 1 s = 1,000,000 µs
• 1 s = 1×109 ns

## References and Citations

1. International Bureau of Weights and Measures (BIPM) The International System of Units (SI)

s h
1 s 2.778×10-4 h
2 s 5.556×10-4 h
3 s 8.333×10-4 h
4 s 0.001 h
5 s 0.001 h
6 s 0.002 h
7 s 0.002 h
8 s 0.002 h
9 s 0.003 h
10 s 0.003 h
s h
20 s 0.006 h
30 s 0.008 h
40 s 0.011 h
50 s 0.014 h
60 s 0.017 h
70 s 0.019 h
80 s 0.022 h
90 s 0.025 h
100 s 0.028 h
1,000 s 0.278 h