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Turn your HEIC images into BMP right in the browser — this tool will grow each file and hand it back in seconds, with nothing uploaded to any server. HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. BMP is an uncompressed Windows bitmap: every pixel is stored raw, so quality is exact but files are very large. Your HEIC is already compressed, so converting to lossless BMP locks in the current quality without further loss. Free, private, unlimited, and watermark-free.
How to Convert HEIC to BMP
Add your HEIC files
Drag and drop, or click to browse. You can convert several at once — they are processed together, right here in your browser.
Convert to BMP
Press Convert. BMP is lossless, so every pixel is preserved exactly.
Download
Save each BMP file, or grab them all as a ZIP. Nothing was ever uploaded, so nothing needs deleting.
Why convert HEIC to BMP?
The main reason is exact pixel data with zero compression, occasionally required by legacy Windows software. HEIC excels at iPhone photos, but when you need pixel-perfect quality, BMP is the better fit. This tool makes that switch instantly, right in your browser.
What happens to quality?
BMP is a lossless format, so the conversion preserves your image exactly — no detail is discarded in the BMP encoding itself.
A note on file size
Note that BMP files are usually larger than HEIC — BMP stores 24-bit uncompressed colour, so this trades size for compatibility. Converting a lossy HEIC into lossless BMP cannot recover detail HEIC already discarded — it simply stops any further loss.
About HEIC
HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. Best for iPhone photos, where it saves storage dramatically over JPEG.
About BMP
BMP is an uncompressed Windows bitmap: every pixel is stored raw, so quality is exact but files are very large. Best for exact pixel data with zero compression, occasionally required by legacy Windows software.
Common Uses for HEIC to BMP
- Converting HEIC to BMP for a project that specifically requires Bitmap files, where HEIC is not accepted.
- Preparing images for software or systems that only read BMP.
- Batch-converting a whole folder of HEIC images to BMP at once, instead of doing them one at a time.
- Switching a High Efficiency Image Container export into BMP so it opens correctly in the tools your team actually uses.
- Archiving HEIC images as lossless BMP so no further quality is lost over time.
HEIC vs BMP: Key Differences
| Aspect | HEIC | BMP |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | Supported | Not supported |
| Animation | Not supported | Not supported |
| Colour depth | 10-bit colour, HEVC-compressed | 24-bit uncompressed colour |
| Typical file size | Small | Large |
| Best used for | iPhone photos | exact pixel data with zero compression |
Tips & Things to Know
Check the file size after converting
Note that BMP files are usually larger than HEIC — BMP stores 24-bit uncompressed colour, so this trades size for compatibility. If size matters for your use case, the before-and-after figures shown above tell you exactly what changed, so there are no surprises when you upload or share the result.
Choose a background colour
Because BMP has no transparency, any transparent areas are placed on a background colour (white by default, and adjustable) so nothing turns black or breaks.
Everything stays on your device
This converter runs entirely in your browser using your own processor. Your HEIC files are never uploaded, stored, or seen by anyone, which makes it safe for private photos, client work, and confidential documents. When you close the tab, nothing remains.
The conversion is faithful
BMP is lossless, so every pixel is preserved exactly as it was in your HEIC, meaning you do not have to worry about settings — just convert and download.
Frequently Asked Questions
How do I convert HEIC to BMP for free?
Add your HEIC file above and press Convert. The BMP download appears in seconds. It is completely free, with no signup, no limits and no watermark.
Is my HEIC uploaded to a server?
No. The entire conversion runs inside your browser using your device's own processor, so your images never leave your computer. That matters for private photos and confidential work.
Can I convert multiple HEIC files at once?
Yes. Add as many as you like and they are converted in one batch, then offered individually or as a single ZIP download.
Will converting to BMP reduce quality?
No. BMP is lossless, so the conversion keeps every pixel. Any quality limit comes only from the original HEIC, not from this step.
Does BMP support transparency?
No, BMP has no transparency. Transparent areas are filled with a solid background colour (white by default) during conversion.
Why is my BMP file larger than the HEIC?
BMP stores 24-bit uncompressed colour without lossy compression, so it is naturally larger than HEIC. This is expected and the image quality is fully intact.
What is the difference between HEIC and BMP?
HEIC is Apple's high-efficiency format, storing iPhone photos at roughly half the size of JPEG with better quality. BMP is an uncompressed Windows bitmap: every pixel is stored raw, so quality is exact but files are very large. That difference is what this conversion is really about.
Is there a file size limit?
Because processing happens in your browser, very large images depend on your device's memory, but typical photos convert instantly. Nothing is capped by an upload limit.
Do I need to install anything?
No. This works in any modern browser on any device — Windows, Mac, Android or iPhone — with nothing to install.
Is this HEIC to BMP converter really free?
Completely free, forever, with no account, no watermark and no hidden premium wall.
100% free · No signup · No watermark · Files never leave your browser
Last updated: July 18, 2026 · FlipMyFormat Convert HEIC to BMP
Written and maintained by the FlipMyFormat team · Runs entirely in your browser