Subtitle Translator: How to Translate Video Subtitles Free (2026)

Fastest method for YouTube: Go to VidText AI, get the transcript, then paste it into DeepL or Google Translate. For SRT file translation, see the tools below.

Why Translate Subtitles?

Translating your video subtitles unlocks a global audience:

• A Spanish-language subtitle track makes your content accessible to 500M+ Spanish speakers
• Multi-language subtitles can 2–5× your international watch time
• YouTube supports up to 40 subtitle languages per video
• Translated subtitle tracks also improve your video's SEO in other-language searches

Method 1: Translate a YouTube Transcript (Free, Any Language)

For YouTube videos, get the English transcript first and then translate:

Step 1: Get the transcript

Go to vidtextai.com/tools/transcript → paste YouTube URL → copy transcript text.

Step 2: Translate the text

Paste into DeepL (best quality) or Google Translate → select target language → copy the translated text.

Step 3: Upload as a subtitle track to YouTube

1. Go to YouTube Studio → Subtitles → your video

2. Click Add Language → select the target language

3. Click Upload file → Without timing (paste the translated text)

4. YouTube auto-syncs the timing from your existing English track

5. Review and publish

Method 2: Translate an SRT File Directly

If you have an .SRT file and want to translate it while preserving timestamps:

Option A: Subtitle Edit (Free Desktop App)

Subtitle Edit is the best free desktop tool for subtitle translation:

1. Download and open Subtitle Edit (Windows, free)

2. File → Open → load your .SRT file

3. Go to Auto-translate → select Google Translate or DeepL

4. Choose target language → click Translate

5. File → Save as → save as new .SRT file

Subtitle Edit preserves all timestamps and formatting during translation.

Option B: Python + DeepL API (Automated, High Volume)

For translating many SRT files programmatically:

`python

import deepl

import re

def translate_srt(input_file, output_file, target_lang):

translator = deepl.Translator("YOUR_DEEPL_API_KEY")

with open(input_file, 'r', encoding='utf-8') as f:

content = f.read()

# Split into subtitle blocks

blocks = content.strip().split('\n\n')

translated_blocks = []

for block in blocks:

lines = block.split('\n')

if len(lines) >= 3:

index = lines[0]

timestamp = lines[1]

text = '\n'.join(lines[2:])

# Translate only the text, preserve index and timestamp

result = translator.translate_text(text, target_lang=target_lang)

translated_blocks.append(f"{index}\n{timestamp}\n{result.text}")

with open(output_file, 'w', encoding='utf-8') as f:

f.write('\n\n'.join(translated_blocks))

translate_srt('english.srt', 'spanish.srt', 'ES')

`

DeepL API free tier: 500,000 characters/month (enough for ~200 hours of subtitles).

Option C: Translate.subtitles.net (Online, No Install)

1. Go to translate.subtitles.net

2. Upload your .SRT file

3. Select source and target languages

4. Click Translate — download the translated .SRT

Free for small files. No account required.

Best Free Subtitle Translation Tools Compared

How to Add Translated Subtitles to YouTube

1. Go to YouTube Studio

2. Select your video → Subtitles

3. Click Add Language → choose the target language

4. Select Upload file → With timing (if uploading a translated .SRT)

5. Review the auto-synced timing and publish

You can add up to 40 subtitle tracks per YouTube video.

YouTube's Auto-Translation Feature

YouTube has a built-in auto-translation for subtitles — but it only applies to the viewer's side, not to subtitle tracks you upload. Here's how viewers can use it:

1. Click CC to turn on captions

2. Click the Settings (⚙) icon → Subtitles/CC → Auto-Translate

3. Select any available language

This is different from uploading a translated subtitle track — auto-translate is machine translation applied in real-time and isn't stored as a separate track on your video.

Which Languages Should You Prioritize?

For most English-language content creators, the highest-ROI subtitle translations are:

Related Guides

• How to Translate YouTube Transcripts to Any Language (Free)
• Closed Captions vs Subtitles: What's the Difference?
• How to Extract Subtitles from YouTube Videos Free