Minute to Second
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Quick Reference Table (Minute to Second)
| Minute (min) | Second (s) |
|---|---|
| 1 | 60 |
| 5 | 300 |
| 22 | 1,320 |
| 30 | 1,800 |
| 45 | 2,700 |
| 60 | 3,600 |
| 90 | 5,400 |
About Minute (min)
A minute is exactly 60 seconds, a unit of time inherited from ancient Babylonian base-60 mathematics and formalised in medieval Islamic astronomy. It is the natural unit for human activities — a commute segment, a workout set, a cooking timer. Meeting durations, medication intervals, and transit schedules are expressed in minutes. In navigation, a minute of arc (different concept, same word) equals one nautical mile of latitude. On a clock face, the minute hand completes one revolution per hour. The abbreviation "min" is the SI-accepted symbol; the prime symbol (′) is used in degree-minute-second notation.
A rest between exercise sets is 1–3 minutes. An espresso extraction takes about 25–30 seconds (0.4–0.5 min). A TV sitcom episode is 22 minutes.
About Second (s)
The second (s) is the SI base unit of time, defined as exactly 9,192,631,770 periods of the radiation of the caesium-133 atom in its ground state hyperfine transition. Before 1967 it was defined as 1/86,400 of a mean solar day, but atomic clocks now provide a definition independent of Earth's rotation. The second is the foundation of all time measurement — minutes, hours, and days are multiples of seconds. In physics and engineering, time is always converted to seconds for calculations. The second is also the unit in which speed of light and gravitational constants are expressed.
A human heartbeat at rest is about 1 second. Light travels 299,792 km in 1 second. The 100 m sprint world record is under 10 seconds.
Etymology: From Latin 'secunda minuta' (second small part), contrasted with 'prima minuta' (first small part, i.e. the minute). The hour was divided into 60 minutes and the minute into 60 seconds — both steps inheriting the sexagesimal (base-60) system of ancient Babylonian astronomy.
Minute – Frequently Asked Questions
What is the two-minute rule and why does it work for productivity?
David Allen's "Getting Things Done" system popularised the rule: if a task takes less than two minutes, do it immediately rather than adding it to a list. The logic is that the overhead of recording, tracking, and returning to a trivial task exceeds the time to just finish it. Cognitive science supports this — task-switching costs 15–25 minutes of refocusing time, so deferring a 2-minute email reply actually costs 17–27 minutes total. The rule exploits the fact that most perceived obligations are actually quick — studies show about 40% of to-do list items take under 2 minutes when actually attempted.
What does "minute" mean in "wait a minute"?
"Minute" (the time unit) comes from Latin "pars minuta prima" (first small part). "Minute" (meaning tiny) also comes from Latin "minutus" (small) — they're the same word. So a minute of time literally means "a small part." The phrase "wait a minute" historically meant "wait a moment" — the actual minute-length duration came after the word entered common use. "Just a second" is similarly imprecise in informal speech.
Why does a nautical mile equal one arc-minute of latitude?
Earth's circumference (360 degrees × 60 arc-minutes each = 21,600 arc-minutes) was used to define the nautical mile as 1/21,600 of the circumference — about 1,852 m. At any latitude, one minute of latitude always equals one nautical mile, making position plotting on a chart trivially simple: the chart's latitude scale is simultaneously a distance scale. This is why mariners and aviators use knots (nautical miles per hour) rather than km/h.
How many calories do you burn per minute of exercise?
Calorie burn varies enormously by body weight, intensity, and activity. Approximate values for a 70 kg person: walking (4 km/h) ~4 kcal/min; cycling (moderate) ~8 kcal/min; running (10 km/h) ~11 kcal/min; rowing (vigorous) ~14 kcal/min; elite cycling sprint ~25 kcal/min. The "calories" on food labels are kilocalories (kcal). A 500 kcal meal requires about 45 minutes of running to expend — which is why diet is generally more effective than exercise for weight loss.
What is the longest piece of music by duration in minutes?
John Cage's "As Slow As Possible" (ASLSP) is currently being performed on an organ in Halberstadt, Germany, and is scheduled to last 639 years — ending in 2640. Each chord change is separated by months or years. The first note sounded in 2001; a chord change in 2022 drew crowds. More conventionally, Erik Satie's "Vexations" (1893) is 180 repetitions of an 80-second piece — about 24 hours played continuously.
Second – Frequently Asked Questions
Why is there a leap second and who decides when to add one?
Earth's rotation is gradually slowing due to tidal friction from the Moon, running slightly slower than the atomic clock definition of the second. To keep UTC (atomic time) within 0.9 seconds of UT1 (astronomical time), leap seconds are periodically inserted — 27 have been added since 1972. The International Earth Rotation and Reference Systems Service (IERS) announces each leap second about 6 months in advance. In 2022, the ITU voted to eliminate leap seconds by 2035, allowing UTC to drift freely.
How many seconds are in a year?
A common year (365 days) contains exactly 31,536,000 seconds. A leap year has 31,622,400 seconds. The mean Gregorian year (365.2425 days) contains 31,556,952 seconds. The tropical year (365.24219 days) — the actual solar cycle — is 31,556,926 seconds. The difference between common year and tropical year (about 926 seconds ≈ 15 minutes) is why a simple 365-day calendar drifts against the seasons without leap year corrections.
Why did the second replace the solar day as the base time unit?
The solar day varies slightly (up to 30 seconds) due to Earth's elliptical orbit and axial tilt — making it unsuitable for precision timekeeping. Atomic clocks, defined by caesium-133 oscillations, are stable to 1 part in 10¹⁶ — drifting less than 1 second in 300 million years. GPS, financial transactions, mobile networks, and the internet all require sub-microsecond synchronisation that only atomic-clock-based seconds can provide.
What is the fastest human 100 m sprint time and why does tenths of a second matter?
Usain Bolt's 9.58 s world record from 2009 is 0.12 s faster than the previous record. At that speed (10.44 m/s average), 0.12 s corresponds to 1.25 m — nearly the length of a stride. Athletics timing uses 0.001 s (1 ms) precision; photo finish cameras operate at 1,000+ frames/second. Olympic medals have been separated by 0.001 s. The reaction time rule (any start under 0.1 s is a false start) is based on the minimum human neural response time.
What did Babylonians have to do with the 60-second minute?
Babylonian astronomers used a sexagesimal (base-60) number system because 60 is divisible by 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30 — making fractions exceptionally convenient without remainders. They divided the sky into 360 degrees (6 × 60) and the day into 24 hours. Greek astronomers adopted and transmitted this system; medieval Islamic scholars refined it; and Europe inherited the 60-minute hour and 60-second minute through Latin translation of Arabic astronomical texts.