Time Converter
Convert between time units. Exact factors, a quick reference table and worked examples.
1 h = 60 min
The same value in every unit
| Unit | Symbol | Value |
|---|---|---|
| Nanosecond | ns | 3.6 × 10¹² |
| Microsecond | µs | 3.6 × 10⁹ |
| Millisecond | ms | 3 600 000 |
| Second | s | 3 600 |
| Minute | min | 60 |
| Hour | h | 1 |
| Day | d | 0.04166667 |
| Week | wk | 0.005952381 |
| Year (365.25 days) | yr | 0.0001140771 |
How to convert time units
Every time unit is related to one base unit (Second, s) by an exact factor. To convert, multiply by the factor of the unit you start from and divide by the factor of the unit you want.
value in new unit = value × (factor of old unit ÷ factor of new unit)
For example, 1 h = 3 600 s and 1 min = 60 s, so 1 h = 60 min.
Quick reference table
How many of the units in the column headings make up one of the unit in each row.
| One… | = ns | = µs | = ms | = s | = min | = h |
|---|---|---|---|---|---|---|
| 1 ns | 1 | 0.001 | 1 × 10⁻⁶ | 1 × 10⁻⁹ | 1.66667 × 10⁻¹¹ | 2.77778 × 10⁻¹³ |
| 1 µs | 1 000 | 1 | 0.001 | 1 × 10⁻⁶ | 1.66667 × 10⁻⁸ | 2.77778 × 10⁻¹⁰ |
| 1 ms | 1 000 000 | 1 000 | 1 | 0.001 | 1.66667 × 10⁻⁵ | 2.77778 × 10⁻⁷ |
| 1 s | 1 000 000 000 | 1 000 000 | 1 000 | 1 | 0.01666667 | 0.0002777778 |
| 1 min | 6 × 10¹⁰ | 60 000 000 | 60 000 | 60 | 1 | 0.01666667 |
| 1 h | 3.6 × 10¹² | 3.6 × 10⁹ | 3 600 000 | 3 600 | 60 | 1 |
| 1 d | 8.64 × 10¹³ | 8.64 × 10¹⁰ | 86 400 000 | 86 400 | 1 440 | 24 |
| 1 wk | 6.048 × 10¹⁴ | 6.048 × 10¹¹ | 604 800 000 | 604 800 | 10 080 | 168 |
| 1 yr | 3.15576 × 10¹⁶ | 3.15576 × 10¹³ | 3.15576 × 10¹⁰ | 31 557 600 | 525 960 | 8 766 |
Common values: h to min
| Hour (h) | Minute (min) |
|---|---|
| 1 h | 60 min |
| 2 h | 120 min |
| 5 h | 300 min |
| 10 h | 600 min |
| 20 h | 1 200 min |
| 50 h | 3 000 min |
| 100 h | 6 000 min |
| 200 h | 12 000 min |
| 500 h | 30 000 min |
| 1 000 h | 60 000 min |
Worked examples
Convert 1 h to min
- 1 h = 3 600 s and 1 min = 60 s.
- 1 × 3 600 ÷ 60 = 60 min.
Convert 50 ms to ns
- 1 ms = 0.001 s and 1 ns = 1 × 10⁻⁹ s.
- 50 × 0.001 ÷ 1 × 10⁻⁹ = 50 000 000 ns.
Convert 250 yr to µs
- 1 yr = 31 557 600 s and 1 µs = 1 × 10⁻⁶ s.
- 250 × 31 557 600 ÷ 1 × 10⁻⁶ = 7.8894 × 10¹⁵ µs.
The units explained
| Unit | Symbol | Exact factor | Where it is used |
|---|---|---|---|
| Nanosecond | ns | 1 ns = 1 × 10⁻⁹ s | Electronics, signals |
| Microsecond | µs | 1 µs = 1 × 10⁻⁶ s | Microcontrollers, pulses |
| Millisecond | ms | 1 ms = 0.001 s | Software, sensors, scan times |
| Second | s | 1 s = 1 s | SI unit |
| Minute | min | 1 min = 60 s | Timers, cycle times |
| Hour | h | 1 h = 3 600 s | Work, battery life |
| Day | d | 1 d = 86 400 s | Schedules, logs |
| Week | wk | 1 wk = 604 800 s | Planning |
| Year (365.25 days) | yr | 1 yr = 31 557 600 s | Lifetimes, reliability |
Key facts
- 1 h = 3 600 s. 1 day = 86 400 s. A Julian year of 365.25 days is 31 557 600 s.
- Frequency f = 1 ÷ T: a 50 Hz signal has a period of 20 ms.
- Timestamps in logs are best recorded in UTC to avoid daylight-saving jumps.
Related converters, guides and tools
- Other converters: Pressure converter, Density converter, Temperature converter, Angles converter, Flow Rate converter, Stress converter, Strain converter, Velocity converter, Volume converter, Length converter, Mass converter, Force converter, Torque converter, Power converter, Energy converter.
- Guides: Data Logging.
- Unit Conversions: every converter on one tabbed page that remembers the tabs you use.
- My Dashboard (members): put this converter on your own workspace as a widget beside the others.
FAQ
How many Minute units are in one Hour?
1 h = 60 min.
How do I convert h to min?
Multiply by 60 (the factor 3 600 ÷ 60). To go back, divide by 60 or multiply by 0.01666667.
What is the nanosecond (ns) used for?
Electronics, signals.
What is the microsecond (µs) used for?
Microcontrollers, pulses.
Are the conversion factors exact?
Where a unit is defined exactly (the inch is 25.4 mm, the pound is 0.45359237 kg, standard gravity is 9.80665 m/s²) the factor is exact; others are given to ten or more digits. Results are shown to seven significant digits.
References
- NIST Special Publication 811, Guide for the Use of the International System of Units (SI), and NIST Handbook 44, Appendix C (general tables of units of measurement).
- BIPM, The International System of Units (SI Brochure), 9th edition; ISO 80000 (quantities and units).
Last reviewed: November 2026.