HDR Photo Size Calculator – Estimate RAW and HDR Image File Size
Estimate RAW and HDR photo file sizes based on sensor resolution with our free HDR Photo Size Calculator. Enter megapixels, bit depth, and color channels to calculate uncompressed and estimated compressed file sizes. This RAW photo file size and HDR image size calculator is invaluable for photographers managing storage for 10-bit HDR, ProRAW, and high-resolution smartphone photography.
HDR Photo Size Calculator
Calculate RAW and HDR photo file sizes based on megapixels bit depth and channels
HDR Photo Size Calculator Features
- Calculates raw and HDR photo file sizes based on megapixels, bit depth, and color channels
- Accepts megapixels, bit depth (e.g., 10-bit HDR), and number of color channels as inputs
- Displays raw uncompressed size and estimated HDR compressed file size in MB and GB
- Useful for planning storage for HDR photography workflows on flagship smartphones
- Helps photographers understand the storage overhead of higher bit-depth captures
- Works for any combination of megapixels, bit depth, and channel count
How to Use HDR Photo Size Calculator
- Enter the image megapixel count (e.g., 108) in the “Image Megapixels” field
- Enter the bit depth (e.g., 10 for 10-bit HDR) in the “Bit Depth” field
- Enter the number of color channels (e.g., 3 for RGB) in the “Color Channels” field
- Click the Calculate button
- View the raw uncompressed size and HDR file size in MB and GB in the results
- Click Reset to calculate for a different HDR photo specification
Frequently Asked Questions
RAW size = (Megapixels × 1,000,000 × Bit Depth × Color Channels) ÷ 8 ÷ 1,024,000 MB. Our RAW photo file size calculator automates this for any bit depth and channel combination.
A 12 MP RAW photo at 14-bit with 3 channels is approximately 50–60 MB uncompressed. Compressed RAW formats (like DNG or ARW) reduce this to 15–25 MB. Our HDR photo size calculator provides estimates.
HDR and 10-bit photo files are 3–5x larger than standard 8-bit JPEG photos. Our HDR image size calculator shows the difference between compressed JPEG and uncompressed RAW/HDR file sizes.
Bit depth determines how many tonal values each pixel can represent. 8-bit allows 256 levels, 10-bit allows 1,024, and 12-bit allows 4,096. Higher bit depth increases RAW photo file size but improves dynamic range.
A 256 GB phone storing ProRAW photos at ~50 MB each can hold approximately 5,000 images. Use our HDR photo size calculator to plan storage needs based on your shooting volume.
Apple ProRAW files range from 25–50 MB depending on the scene and iPhone model. Use our RAW photo file size calculator to compare ProRAW sizes with standard HEIF and JPEG equivalents.
HDR video files are dramatically larger — a 10-minute 4K HDR video can exceed 3 GB, while an HDR photo is 10–60 MB. Our HDR image size calculator focuses specifically on still photo size estimation.
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