Calculate file size and storage needs: images, audio and video
Use the file size calculator to find the storage needed for images, audio and video: enter resolution and color depth, sample rate or bitrate, then see the size with a step-by-step calculation. For example, a 24-bit Full HD image takes 5.93 MiB. Free and no sign-up required; the calculator runs in your browser.
Built by Luca Stanek
- Image, audio and video
- KiB and KB
- Step-by-step calculation
- No sign-in required
Lots of images, recordings or videos? With a VPS, you get dedicated storage space and full control.
Resolution
Color depth
Count
Result
Image storage required
5.93 MiB
- In bits
- 49,766,400 bits
- In bytes
- 6,220,800 bytes
- Decimal
- 6.22 MB
- Possible colors
- 16,777,216
An uncompressed 1,920 × 1,080 pixel image with 24-bit color depth needs 5.93 MiB.
Calculation steps (5)
- 1Pixels: 1,920 × 1,080 = 2,073,600 pixels
- 2Bits per image: 2,073,600 pixels × 24 bits = 49,766,400 bits
- 3In bytes: 49,766,400 bits ÷ 8 = 6,220,800 bytes
- 4Convert: 6,220,800 Byte ÷ 1024 = 6,075 KiB
- 5Convert: 6,075 KiB ÷ 1024 = 5.93 MiB
Why this calculator
Image, audio and video in one calculator
For training, exam questions and storage planning.
Images
Resolution and color depth, including multiple images and the number of possible colors.
Audio
Sample rate, bit depth, channels and duration, with presets from telephone to studio quality.
Video
Calculate uncompressed size from resolution and frame rate, or use video and audio bitrates.
KiB and KB
Binary and decimal units, with the equivalent in the other system shown alongside the result.
Calculation steps
Every step from bits to bytes to the appropriate unit, ready to check and copy.
Share calculation
Your values appear in the address bar; the link opens the same calculation.
How it works
How to calculate file size in four steps
No account needed, right in your browser.
Step 1
Choose media type
Choose image, audio or video. For video, calculate the uncompressed size or use the bitrate.
Step 2
Enter values
Image: resolution, color depth and quantity. Audio: sample rate, bit depth, channels and duration. Video: resolution, color depth and frame rate, or bitrate in kbit/s, plus duration in seconds, minutes or hours.
Step 3
Choose units
Switch between binary (KiB, MiB, GiB) and decimal (KB, MB, GB) units in the result.
Step 4
View and share the result
See the size in bits, bytes and the other unit system, along with the step-by-step calculation. Then copy the result or share the link.
Formulas
How to calculate storage requirements
The formulas from the first part of the IT specialist exam, each with an example.
Image (uncompressed)
Width × height × color depth ÷ 8 = bytes
1920 × 1080 × 24 bits ÷ 8 = 6,220,800 bytes = 5.93 MiB
Audio (uncompressed)
Sample rate × bit depth × channels × seconds ÷ 8 = bytes
1 min of CD-quality audio: 44,100 × 16 × 2 × 60 ÷ 8 = 10.09 MiB
Video (uncompressed)
Width × height × color depth × frames per second × seconds ÷ 8
10 s of Full HD at 25 fps = 1.45 GiB
Video by bitrate
(Video bitrate + audio bitrate) × seconds ÷ 8
1 min at 8.000 + 192 kbit/s = 61.44 MB (58.59 MiB)
Binary or decimal
1 KiB = 1024 bytes, 1 KB = 1000 bytes
6,220,800 bytes = 5.93 MiB or 6.22 MB
Number of colors
Colors = 2 to the power of color depth
8 bits = 256 colors, 24 bits (True Color) = 16,777,216 colors
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FAQ
Frequently asked questions
Quick answers about file sizes, storage needs and units.
Width × height × color depth in bits ÷ 8 = bytes. A 1920 × 1080 pixel image at 24-bit color depth takes 6,220,800 bytes, or 5.93 MiB. This applies to uncompressed images such as BMP files. Use the quantity field to calculate up to 100,000 images at once.
The number of colors is 2 to the power of the color depth: 24-bit color depth gives 16,777,216 colors. For images, the calculator shows the number of possible colors directly in the result. Presets are available for 1, 8, 16, 24, 32 and 48 bits.
Sample rate × bit depth × channels × seconds ÷ 8 = bytes. 3 minutes of uncompressed CD-quality audio (44,100 Hz, 16-bit, stereo) takes 31,752,000 bytes, or 30.28 MiB.
Size of one frame × frames per second × seconds. 10 seconds of Full HD (1920 × 1080) video at 24-bit color depth and 25 frames per second takes 1.45 GiB. That’s why videos are compressed in practice.
(Video bitrate + audio bitrate) × seconds ÷ 8 = bytes. Bitrates use decimal units: 1 Mbit/s = 1,000,000 bits per second. 8,000 kbit/s of video and 192 kbit/s of audio produce 10.24 MB in 10 seconds. For a video without audio, set the audio bitrate to 0.
KB, MB and GB use 1000; KiB, MiB and GiB use 1024. 1 MiB is 1,048,576 bytes, while 1 MB is only 1,000,000 bytes. Switch between binary and decimal units in the result and see the value in the other system alongside it.
These formats compress the data. The calculator shows the uncompressed size typically required in exam questions. For finished videos, use the bitrate in video mode.
No. The calculator runs in your browser without sign-up. Your values appear only in the address bar so you can share the calculation as a link.
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