How to Convert DOCM to OTT — Quick & Free
Fast, instant DOCM to OTT conversion. No signup required. Just drop your .docm file and get .ott in seconds.
Batch Settings
About DOCM to OTT Conversion
Short answer: yes, you can convert DOCM to OTT online for free, and quality is well preserved with the right settings. Just upload your .docm file to CocoConvert, pick OTT as the output, and click Convert. The whole process takes seconds.
Now for the details. DOCM is a widely used file format. OTT is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your DOCM file is decoded and re-encoded as OTT. Converting DOCM to OTT maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert DOCM to OTT
- 1
1. Upload DOCM
Drop your .docm file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select OTT
Choose .ott from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .ott file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert DOCM to OTT
Your DOCM file is decoded and re-encoded as OTT.
Your DOCM file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in OTT format
The converted file is ready for download
Format Comparison
DOCM
.docm file
| Extension | .docm |
| MIME Type | application/vnd.ms-word.document.macroEnabled.12 |
| Category | Document |
OTT
.ott file
| Extension | .ott |
| MIME Type | application/vnd.oasis.opendocument.text-template |
| Category | Document |
Should You Convert DOCM to OTT?
When to Convert
- ✓When you need a OTT file
Frequently Asked Questions
Is DOCM to OTT conversion free?
Yes. CocoConvert offers free DOCM to OTT conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is DOCM to OTT conversion?
Most files convert in 2–10 seconds depending on size. Large document files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded DOCM file and the converted OTT file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting DOCM to OTT lose quality?
Converting DOCM to OTT maintains high quality with CocoConvert's optimised encoder settings.
Can I convert OTT back to DOCM?
Yes, CocoConvert supports OTT to DOCM conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.