MOV to MP4 Converter - Free & Local (No Uploads)

Convert MOV to MP4 instantly in your browser. 100% free, no file size limits, and completely privateโ€”your videos never leave your device.

Click for theater mode

Drop MOV files

Choose your MOV files. Conversion happens locally in your browser. No uploads.

Select MOV files to begin.

All conversions run entirely on your device, saving data and protecting privacy.

Conversion Queue

0 files total

Your conversion tasks will appear here.

How to Use

  1. Drag and drop your .mov video files into the upload area or click "Select Files".
  2. (Optional) Choose your "Conversion Mode". The default "Fast Stream Copy" is highly recommended as it performs a lossless conversion in seconds.
  3. Click "Convert to MP4" to start the process.
  4. Once completed, click "Download" next to your video to save the new MP4 file.

Core Features

  • Absolute Privacy (No Upload): Unlike other online tools, your videos are never uploaded to any third-party servers. We use WebAssembly to perform the conversion entirely within your browser.
  • Lightning Fast Conversion: Skip the long upload and download times. Using "Fast Stream Copy" mode, your video container is changed almost instantly.
  • No Limits, 100% Free: No annoying file size limits (like the typical 100MB cap), no daily conversion quotas, and no watermarks.
  • High-Quality Output: Maintain the original video quality. Your iPhone or Mac MOV files are converted to MP4 without any dropped frames or blurriness.

Related Tools

FIRE Calculator 2026 (Inflation Adjusted) | Retirement Gap Simulator

The 2026 FIRE Calculator (Inflation Adjusted). Simulate real purchasing power, analyze retirement savings gaps, and generate a visual wealth roadmap. One-click CSV export for your Excel or Notion finance dashboard. 100% Private, client-side calculation.
Position Size Calculator - Risk-Based Trade Sizing

Calculate trade position size from account balance, risk %, entry, and stop loss. Runs locally in your browser with no uploads, so you can compare risk scenarios before you trade.
Compound Interest Calculator | Free APY & Investment Chart

Calculate compound interest from principal, recurring contributions, APY, and time. Visualize principal, interest, and final balance with a local interactive chart.
Online Loan & Mortgage Calculator - Instant Amortization Schedule

Use this Loan Calculator / Mortgage Calculator to estimate monthly payment, total interest, and an amortization schedule locally. Enter amount, rate, and term to calculate now with instant charts.
Online Investment & ROI Calculator - Compound Interest Visualizer

Use this Investment Calculator / ROI Calculator to estimate starting capital, monthly contributions, annual return, and inflation-adjusted results locally. Calculate projected returns with an instant compound interest chart, ROI, and yearly schedule.
APR to APY Calculator - Convert Nominal & Effective Rates

Use this APR to APY Calculator to convert between APR and APY locally. Enter a rate, choose compounding frequency, and see the effective interest rate, spread, and frequency comparison instantly.
Profit Margin Calculator - Margin vs Markup Converter

Use this Profit Margin Calculator to calculate gross profit, Markup, Margin, and selling price locally. Enter cost and price, or cost and target margin, then calculate your margins instantly.
CPM & CPC Calculator - Ad Spend and CTR Online Tool

Use this CPM Calculator and CPC Calculator to estimate ad spend, impressions, clicks, CPM, CPC, and CTR locally. Enter budget and target costs to plan campaign scenarios instantly.

Calculation Logic

Traditional video converters require uploading your file to a remote cloud server, converting it there, and downloading the result. This tool brings a professional multimedia engine (FFmpeg) directly into your browser via WebAssembly.

When using "Fast Stream Copy", the tool extracts the original video and audio tracks from the MOV container and instantly packages them into a new MP4 container. Because no re-encoding takes place, the process is incredibly fast and 100% lossless. If you have an unusually encoded MOV file, you can switch to "Deep Re-encode" mode for maximum compatibility.

FAQ

Why is the conversion so fast? Do I lose quality?

The default "Fast Stream Copy" mode doesn't alter the video pixels. It simply changes the "container" from MOV to MP4. Therefore, it only takes seconds to process and guarantees zero quality loss.

Why is there no file size limit?

Because we don't use cloud servers. Everything happens locally on your device, meaning you aren't consuming our server bandwidth or storage. However, extremely large files (e.g., over 1GB) will require sufficient RAM on your device.

Why convert Apple's MOV to MP4?

MOV is Apple's default recording format, which works great on iOS and macOS. However, it often encounters playback issues on Windows PCs, some Android devices, or web platforms. MP4 is the most universally supported video format worldwide.

What is the "Deep Re-encode" mode for?

A few older or specialized MOV files might use codecs that aren't natively supported in standard MP4 containers. If the fast copy doesn't play on your target device, use the "Deep Re-encode" mode. It will decode and compress the video into standard H.264, ensuring maximum compatibility across all devices.