Minutes to Seconds Converter
Enter a time in minutes and get the exact equivalent in seconds, milliseconds, and a broken-down hours-minutes-seconds form. Switch to reverse mode to convert from seconds back to minutes. Decimal values like 1.5 minutes work fine. The "show your work" panel explains each step so you can verify the math at a glance.
Formula
Worked example
5 minutes to seconds: 5 x 60 = 300 seconds, or 300,000 milliseconds. In h:m:s form: 0h 05m 00s. Reverse: 300 seconds / 60 = 5 minutes exactly.
How to convert minutes to seconds
There are exactly 60 seconds in one minute, so the conversion is simple multiplication: seconds = minutes x 60. For decimal or fractional minutes the same rule applies. 1.5 minutes gives 1.5 x 60 = 90 seconds; 0.25 minutes (a quarter-minute) gives 0.25 x 60 = 15 seconds. To go in the other direction, divide: minutes = seconds / 60. The converter above handles both directions and also outputs milliseconds (seconds x 1,000) and the broken-down h:m:s form automatically.
Why 60? The history of sexagesimal time
The division of an hour into 60 minutes, and a minute into 60 seconds, traces back to ancient Babylonian astronomy, which used a base-60 (sexagesimal) number system. The Babylonians divided the day into 24 hours and each degree of the celestial circle into 60 "partes minutae primae" (first small parts, later shortened to "minutes") and 60 "partes minutae secundae" (second small parts, our "seconds"). The International System of Units (SI) defines the second as the base unit of time, and the minute as exactly 60 seconds, so the ratio is fixed and exact, not an approximation.
Practical uses and common conversions
Knowing that 1 minute = 60 seconds is useful in a wide range of contexts: cooking timers, athletic performance (a 4-minute mile is 240 seconds), audio and video editing (timestamps are often in seconds), programming sleep/delay functions, and scientific experiments. Common reference points: a quarter hour is 15 minutes = 900 seconds; a half hour is 1,800 seconds; a full hour is 60 minutes = 3,600 seconds; a 24-hour day is 1,440 minutes = 86,400 seconds. The reference table above gives the most frequently needed values at a glance.
Decimal minutes and fractional values
Real-world measurements often produce decimal minutes rather than whole numbers. GPS coordinates use decimal degrees with fractional arc-minutes; stopwatch readings may show 2.45 minutes; physiological data can report event intervals in tenths of a minute. The rule is unchanged: multiply the decimal by 60. For 2.45 minutes: 2.45 x 60 = 147 seconds. For 0.75 minutes: 0.75 x 60 = 45 seconds. Conversely, a stopwatch reading of 95 seconds converts to 95 / 60 = 1.5833 minutes (1 minute 35 seconds).
Common minutes to seconds conversions
| Minutes | Seconds | Milliseconds | Hours : Min : Sec |
|---|---|---|---|
| 0.5 | 30 | 30000 | 0h 00m 30s |
| 1 | 60 | 60000 | 0h 01m 00s |
| 2 | 120 | 120000 | 0h 02m 00s |
| 5 | 300 | 300000 | 0h 05m 00s |
| 10 | 600 | 600000 | 0h 10m 00s |
| 15 | 900 | 900000 | 0h 15m 00s |
| 20 | 1200 | 1200000 | 0h 20m 00s |
| 30 | 1800 | 1800000 | 0h 30m 00s |
| 45 | 2700 | 2700000 | 0h 45m 00s |
| 60 | 3600 | 3600000 | 1h 00m 00s |
| 90 | 5400 | 5400000 | 1h 30m 00s |
| 120 | 7200 | 7200000 | 2h 00m 00s |
Quick-reference values for the most common time durations.
Frequently asked questions
How many seconds are in a minute?
There are exactly 60 seconds in 1 minute. This is defined by the International System of Units (SI): the second is the base unit, and the minute is a derived unit equal to 60 seconds. The ratio is exact, not a rounded approximation.
How do I convert minutes to seconds without a calculator?
Multiply the number of minutes by 60. For example, 3 minutes = 3 x 60 = 180 seconds, and 45 minutes = 45 x 60 = 2,700 seconds. For mental arithmetic with large values, break it into parts: 100 minutes = (100 x 60) = 6,000 seconds.
Can I convert decimal minutes to seconds?
Yes. The formula is the same: multiply by 60. For 2.5 minutes: 2.5 x 60 = 150 seconds. For 0.25 minutes: 0.25 x 60 = 15 seconds. Decimal minutes are common in scientific measurements, GPS data, and timing software.
How do I convert seconds back to minutes?
Divide the number of seconds by 60. For example, 180 seconds / 60 = 3 minutes; 90 seconds / 60 = 1.5 minutes. Use the "Seconds to minutes" mode in this calculator to do it automatically with the breakdown in h:m:s form.
How many seconds are in an hour?
There are 3,600 seconds in one hour, because 1 hour = 60 minutes and 1 minute = 60 seconds, so 60 x 60 = 3,600. A 24-hour day therefore contains 24 x 3,600 = 86,400 seconds.
What is the h:m:s breakdown shown in the results?
The hours-minutes-seconds (h:m:s) form expresses a duration by splitting it into whole hours, the remaining whole minutes, and the remaining seconds. For example, 5,000 seconds becomes 1h 23m 20s. This format is common in video players, GPS systems, and sports timing.