What Are the Font Units in CapCut, and How Do I Convert Them to Pixels and Word Font Sizes?

📍 Importantly:

▪️ CapCut's font size is resolution-independent—it scales based on video canvas size (e.g., 1080×1920 for vertical videos).

▪️ There is no explicit "px" or "pt" display in any CapCut interface (Mobile, Desktop, or Web).

▪️ However, you can approximate conversions using empirical testing and known scaling ratios.

Below are platform-specific insights and conversion methods.

✅ 1. CapCut Mobile App (iOS / Android)

Font Unit Behavior:

• The font size slider typically ranges from 1 to 300+, depending on device and app version.
• This number is arbitrary but proportional to the text bounding box relative to the video frame.

How to Estimate Pixel Size:

Through extensive user testing and reverse engineering, the following approximation holds for standard 1080×1920 (9:16) videos:

Text Height in Pixels ≈ (CapCut Font Size × 72) ÷ 300

Example:

• CapCut font size = 150 → Pixel height ≈ (150 × 72) / 300 = 36 px
• CapCut font size = 300 → Pixel height ≈ (300 × 72) / 300 = 72 px

📍 Note: This is the approximate rendered height of uppercase letters (cap height), not the full line height.

Convert to Microsoft Word Font Size:

Word uses points (pt), where 1 pt = 1/72 inch ≈ 1.333 px at 96 DPI (standard screen resolution).

Using the pixel estimate above:

📍 Tip: On mobile, you cannot input exact numeric values—you must drag the slider. Use a reference text layer with known size for visual matching.

✅ 2. CapCut Desktop (Windows / macOS)

Font Unit Behavior:

• Same internal scale as mobile (typically 1–300+).
• However, Desktop allows direct numeric input of font size (e.g., type "150" in the font size field).

Pixel Conversion:

The same formula applies for 1080p vertical canvas:

Rendered Text Height (px) ≈ (Font Size × 72) ÷ 300

📍 But note:

▪️ If your project uses a different resolution (e.g., 1920×1080 landscape, 4K), the pixel output scales proportionally.

▪️ For example, in 4K (3840×2160), the same font size may appear twice as large in pixels compared to 1080p.

Practical Workflow:

1
1. Set your project resolution first (File > Project Settings).
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2. Use the formula above as a baseline.
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3. For precise control, export a test frame and measure text height in an image editor (e.g., Photoshop).

Word Font Size Reference:

Use the same table as above. Remember: Word font size = points, and 1 pt ≈ 1.33 px on screen.

📍 Tip: Desktop offers ruler guides and zoom up to 1600%, making it easier to visually calibrate text size.

✅ 3. CapCut Web(CapCut Online)

Font Unit Behavior:

• Also uses the same 1–300+ scale as mobile and desktop.
• Numeric input is supported (you can type a number in the font size box).

Pixel Conversion:

Same approximation formula applies for standard 1080×1920 projects:

Text Height (px) ≈ (Font Size × 72) ÷ 300

However, web rendering depends on:

• Browser zoom level (must be 100%)
• Display DPI scaling (e.g., 125% on Windows affects perceived size)
• Cloud-based preview compression

📍 Recommendation:

▪️ Always work at 100% browser zoom.

▪️ Export a short clip and inspect in a media player or image tool to verify actual pixel dimensions.

Word Font Size Mapping:

Identical to other platforms—use the table above.

📍 Tip: CapCut Web previews are lower fidelity. For typography-critical projects, finalize text sizing on Desktop or Mobile.

🔑 Summary: Conversion Formula & Reference

Universal Approximation (for 1080×1920 video):

Text Height (px) ≈ Font Size × 0.24

(since 72 ÷ 300 = 0.24)

To Word Font Size (pt):

Word Font (pt) ≈ Text Height (px) ÷ 1.33

📍 Important Notes:

▪️ These are estimates—actual rendering varies by font family (e.g., bold fonts appear larger).

▪️ CapCut does not use true typographic metrics (like ascender/descender); it scales the entire glyph box.

▪️ Always test with export if pixel-perfect accuracy is required (e.g., for subtitles or brand guidelines).

Thank you for using CapCut!