| Feature | ConvertFly | Zamzar |
|---|---|---|
| Free tier | 10 conversions / day | 2 conversions / day |
| Pricing (starting from) | $9 / month (Starter) | $18 / month (Basic) |
| Formats supported | 200+ | 1200+ conversion paths |
| File size limit (free) | 100 MB | 50 MB |
| API access | Yes - REST API | Yes - REST API |
| No signup required | Yes | No |
| Privacy / Data location | Own private infra (EU/UK/CA) | United Kingdom |
| Auto-delete | 24 hours | 24 hours (free) |
| Open-source engines | Yes | Not disclosed |
Where Zamzar shines
- One of the originals. Zamzar has been around since 2006 and is one of the most recognized names in online file conversion. That longevity brings stability and trust.
- Massive conversion catalog. With over 1200 supported conversion paths, Zamzar handles an enormous range of file types including many legacy and uncommon formats.
- Email delivery option. Zamzar can email converted files to you directly, which is convenient if you prefer not to download immediately.
Where ConvertFly shines
- More generous free tier. ConvertFly offers 10 free conversions per day with a 100 MB limit, compared to Zamzar's 2 conversions at 50 MB.
- Half the price. ConvertFly's Starter plan is $9/month compared to Zamzar's $18/month Basic plan, making it a more affordable option for regular users.
- No signup required. Convert files instantly without creating an account. Zamzar requires registration even for free conversions.
The bottom line
Zamzar is a veteran in the file conversion space with unmatched format coverage and nearly two decades of reliability. It is an excellent choice when you need to convert rare or legacy file types. ConvertFly is a compelling alternative if you want a more generous free tier, lower pricing, no-signup convenience, and private-infrastructure privacy. If format breadth is your top priority, Zamzar is hard to beat. If price, privacy, and ease of use matter more, ConvertFly delivers strong value.