What is the difference between letter-spacing and tracking?

Letter-spacing and tracking refer to the same concept: the uniform space between characters. "Tracking" is the traditional typography term, while "letter-spacing" is the CSS property name used in web development.

Should letter-spacing be negative or positive?

Negative letter-spacing is typically used for large display text and headings. Positive letter-spacing is used for all-caps text, navigation items, and small text. Body text normally uses 0em (normal) spacing.

Letter Spacing Converter

Convert letter-spacing between px, em, rem, and percentage values instantly with our free letter spacing converter. Adjust the interactive slider or click a preset to see live text preview, equivalent values across all four CSS units, and the closest Tailwind CSS tracking class. Perfect for fine-tuning typography in UI design, CSS development, and brand typography systems. Fully private, 100% free, and no signup required.

Convert letter-spacing between px, em, rem, and percentage values. Preview the effect live on sample text and find the closest Tailwind CSS tracking class.

Letter Spacing0em

TighterWider

-0.15em0.3em

Normal - default spacing

Closest Tailwind Class:tracking-normal(Normal)

px0Pixels

em0EM

rem0REM

%0Percent

CSS Output

letter-spacing: 0em;

Live Preview

The quick brown fox jumps over the lazy dog.

letter-spacing: 0em

Base Font Size (for px/pt calculations)

Common Spacing Presets

Why Use Our Letter Spacing Converter?

Instant Multi-Unit Conversion

The letter spacing converter shows equivalent values across px, em, rem, and percentage units instantly as you adjust the slider or type a value. Every change updates the live preview and CSS output in real time with no button to press.

Live Preview with Tailwind Detection

See the exact effect of letter-spacing changes on sample text with a live preview that updates as you adjust. The converter automatically identifies the closest Tailwind CSS tracking class (tracking-tight, tracking-wide, etc.) so you can use the right utility class immediately.

100% Private - No Upload

All letter spacing conversions happen locally in your browser. Your values never leave your device and are never sent to any server - safe for proprietary design systems and client work.

Free & No Limits

Convert unlimited letter spacing values with no signup, no subscription, and no usage caps. The letter spacing converter is completely free forever with no ads blocking the interface.

Common Use Cases for Letter Spacing Converter

UI & Typography Design

UI designers use the letter spacing converter to translate design system letter-spacing values between units. Figma and Sketch typically use px or percentage values, while CSS uses em units. The converter ensures accurate translation between design and code.

CSS Development

Frontend developers use the letter spacing converter to generate production-ready CSS letter-spacing values. The Copiable CSS output and Tailwind tracking class detection mean you can go from experimentation to implementation in one click.

Typography System Tuning

Design system maintainers use the letter spacing converter to define consistent tracking tokens for headings, body text, captions, and display text. The slider with tick marks helps dial in exact values for each type scale level.

Responsive Typography

Mobile designers use the letter spacing converter to test how letter-spacing behaves at different font sizes. Since em units scale with font size, the converter helps ensure tracking remains proportional across all screen sizes and breakpoints.

Logo & Brand Design

Brand designers use the letter spacing converter to fine-tune logo wordmarks and brand typography. Precise letter-spacing control is essential for creating distinctive brand text treatments that remain legible at all sizes.

All-Caps & Display Text

Designers working with all-caps headings, button labels, and navigation items use the letter spacing converter to add breathing room between uppercase letters. The presets provide quick starting points for common use cases.

Understanding Letter Spacing

What is Letter Spacing?

Letter-spacing (also known as tracking in typography) is the uniform space between characters in a block of text. It is distinct from kerning, which adjusts the space between specific character pairs. Letter-spacing applies equal spacing across all characters and is commonly used to improve readability, create visual hierarchy, or achieve specific design effects.

Letter-Spacing Units Explained

em: Relative to the current font size. 1em = the font size. This is the most commonly used unit for letter-spacing in CSS because it scales automatically with the font size. For example, letter-spacing: 0.05em at 16px = 0.8px, but at 32px = 1.6px. Using em ensures consistent visual spacing regardless of font size.

rem: Relative to the root (<html>) font size. Behaves similarly to em but is based on the root font size rather than the element's font size. Useful when you want letter-spacing to be consistent across all elements regardless of their individual font size.

px (Pixels): A fixed, absolute value. Pixel letter-spacing does not scale with font size, which means spacing that looks good at 16px body text may be too tight at 48px heading text or too loose at 12px caption text.

% (Percent): A percentage of the font size. 5% letter-spacing = 0.05em. Percentages are less common in CSS but are sometimes used in design tools like Figma. Our converter handles this translation automatically.

When to Adjust Letter Spacing

Headings and display text: Larger text benefits from tighter letter-spacing (negative values) for impact, or wider spacing for an elegant, premium feel. Display fonts often look better with -0.01em to -0.03em tracking.
All-caps text: Uppercase text almost always needs positive letter-spacing. Without it, all-caps text looks cramped. A value of 0.05em to 0.1em is standard for navigation, button labels, and section headings.
Small text: Captions and small labels (under 14px) benefit from slight positive letter-spacing (0.01em to 0.02em) to improve readability at small sizes.
Body text: Body copy typically uses normal letter-spacing (0em). Adding tracking to body text can reduce readability by breaking word shapes that readers recognize.

How to Use This Tool

Adjust the slider to set the letter-spacing value, or click a preset button for common values. The slider covers a wide range from very tight (-0.15em) to very wide (0.3em) with labelled tick marks for standard Tailwind tracking classes.
Review all unit equivalents in the output grid - px, em, rem, and percentage values are shown simultaneously. The closest Tailwind tracking class (tracking-tight, tracking-wide, etc.) is automatically detected.
Preview the effect on sample text in the live preview panel. The preview updates instantly as you adjust the slider.
Copy the CSS declaration or Tailwind class with one click. The CSS output includes the exact letter-spacing value in em units.

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Frequently Asked Questions About Letter Spacing Converter

A letter spacing converter translates letter-spacing values between different CSS units - px, em, rem, and percentage. Our converter shows equivalent values across all units simultaneously, with a live preview that shows the exact effect on sample text. It also detects the closest Tailwind CSS tracking class (tracking-tight, tracking-wide, etc.) for quick utility class usage.

Adjust the slider to set your desired letter-spacing value, or click any preset button for common spacing values (Tightest, Normal, Wide, Widest, etc.). The converter instantly shows equivalent values in px, em, rem, and percentage. The live preview updates in real time, and the closest Tailwind tracking class is automatically highlighted. Copy the CSS or Tailwind class with one click.

Letter-spacing and tracking refer to the same concept: the uniform space between characters in text. "Tracking" is the traditional typography term used in design tools like Adobe InDesign and Figma, while "letter-spacing" is the CSS property name used in web development. The converter works with both terms interchangeably.

The em unit is recommended for CSS letter-spacing because it scales automatically with the font size. A value of 0.05em at 16px produces 0.8px spacing, but at 48px it produces 2.4px - maintaining proportional spacing. Pixels are absolute and don't scale, making them less suitable for responsive typography. Our converter helps you translate design specs into the optimal CSS unit.

The converter compares your letter-spacing value (in em) against the six standard Tailwind CSS tracking classes: tracking-tighter (-0.05em), tracking-tight (-0.025em), tracking-normal (0em), tracking-wide (0.025em), tracking-wider (0.05em), and tracking-widest (0.1em). If your value is within 0.02em of any standard class, the converter shows it as a recommendation with the exact class name to copy.

Yes. All letter spacing conversions happen 100% client-side in your browser. Your values are never sent to any server, never stored, and never transmitted anywhere. The converter is completely private and processes everything locally on your device.

Negative letter-spacing (tight) is typically used for large display text and headings where you want a compact, impactful look. Positive letter-spacing (loose) is used for all-caps text, navigation items, button labels, and small text to improve readability. Body text at normal sizes (14-18px) typically uses 0em (normal) spacing. The converter includes presets for all common use cases.

Yes. The letter spacing converter is 100% free with no signup required, no premium features, and no usage limits. Convert unlimited letter spacing values without any restrictions or hidden costs. There are no ads blocking the interface.