Recognised as Decimal number
0.21
- Positive
- Decimal
- 2 d.p.
- Exact fraction
- 2 s.f.
0.21 is a decimal number equal to 21⁄100. It lies between 0 and 1, and as a percentage it is 21%.
Number properties
Fractions & ratios
Arithmetic
Representations
Decimal0.21
Scientific notation2.1 × 10^-1
Exponential2.1e-1
IEEE 754 binary64 (hex)0x3FCAE147AE147AE1the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x3E570A3D32-bit single precision, may lose accuracy
Stored as0.21the nearest binary64 value to what you typed
Rounding & precision
Significant figures as written2counted from the digits as typed, not from the value
To 0 decimal places0
To 1 decimal place0.2
To 2 decimal places0.21
To 3 decimal places0.210
To 4 decimal places0.2100
To 1 significant figure0.2
To 2 significant figures0.21
To 3 significant figures0.210
To 4 significant figures0.2100
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
00:21 (time of day)
- 00:21
- 12:21 am
- 1,260 s
- 1.5% of the day
00:21 is 1,260 seconds after midnight, 1.4583% of the way through the day, with 23 hours and 39 minutes remaining. In twelve-hour form it is 12:21 am, and the hour and minute hands sit 115.5° apart.
The time
24-hour00:21
12-hour12:21 am
Hours, minutes, seconds0 h 21 m 0 s
Seconds since midnight1,260
Minutes since midnight21
Decimal hours0.35the form payroll and timesheets use
Milliseconds since midnight1,260,000
Position in the day
Through the day1.458333%
Remaining until midnight85,140 seconds23 hours and 39 minutes
Elapsed21 minutes
Half of the day passedNobefore noon
Through the hour35%
Quarter of the day1six-hour quarters
Clock hands
Hour hand10.5° from twelvemoving continuously, so it sits between the hour marks
Minute hand126° from twelve
Second hand0° from twelve
Angle between hour and minute115.5°
Hands alignedNo
As a frame count
At 24 fps30,240film
At 25 fps31,500PAL
At 30 fps37,800
At 60 fps75,600
At 29.97 fps37,762.24≈NTSC is exactly 30000/1001 frames per second, not 29.97
Timecode at 25 fps00:21:00:00
Relative to now
These values depend on today’s date and change daily.
Now (UTC)12:00:51
Next occurrencein 12 hours, 20 minutes and 9 seconds
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
As a duration
Nerdulate something else
Nothing in mind? Surprise me · today’s page