Business Card Text Design - Fitting Information into 91x55mm
A standard Japanese business card measures 91mm by 55mm. Within that 50 square centimeters of space, you must fit a name, title, company, address, phone number, email, and possibly a URL and QR code - all while maintaining readability and visual balance. The average business card contains 150-250 characters of text, and every character competes for space with every other character. Business card design is one of the purest exercises in text constraint optimization: the physical dimensions are fixed, the information requirements are non-negotiable, and the margin for error is measured in millimeters.
Standard Business Card Sizes by Region
Business card dimensions vary by country, and the size difference directly affects how much text you can include.
| Region | Size (mm) | Area (cm2) | Relative to Japan |
|---|---|---|---|
| Japan | 91 x 55 | 50.05 | Baseline |
| US / Canada | 89 x 51 (3.5" x 2") | 45.39 | 9% smaller |
| Europe (ISO 7810) | 85 x 55 | 46.75 | 7% smaller |
| China | 90 x 54 | 48.60 | 3% smaller |
| South Korea | 90 x 50 | 45.00 | 10% smaller |
Japan's 91x55mm card is the largest standard format, which is fortunate because Japanese business cards typically carry more information than Western ones. A Japanese card often includes both Japanese and romanized text (meishi with bilingual layout), effectively doubling the text content. The 9% size advantage over US cards translates to roughly 15-20 additional characters at the same font size - a meaningful difference when every character counts.
European cards at 85x55mm share the same height as Japanese cards but are 6mm narrower. This width reduction disproportionately affects horizontal text layout, forcing either smaller font sizes or shorter text strings. A company name that fits comfortably on a Japanese card may need abbreviation on a European card. The ISO 7810 ID-1 format (credit card size, 85.6x53.98mm) is increasingly used for business cards in Europe, further tightening the available space.
Text Elements and Character Budgets
Each element on a business card has a practical character limit determined by font size, readability, and layout conventions.
| Element | Typical chars | Min font size | Priority |
|---|---|---|---|
| Name (primary) | 10-25 chars | 10-14pt | Highest - must be instantly readable |
| Name (romanized) | 15-30 chars | 7-9pt | High on bilingual cards |
| Job title | 15-40 chars | 7-9pt | High - establishes role context |
| Company name | 10-40 chars | 8-10pt | High - brand recognition |
| Department | 10-30 chars | 6-8pt | Medium - often abbreviated |
| Address | 40-80 chars | 6-7pt | Medium - shrinking in importance |
| Phone | 12-18 chars | 7-8pt | Medium |
| 20-40 chars | 7-8pt | High - primary contact method | |
| URL | 15-40 chars | 6-8pt | Low-Medium - often replaced by QR |
| QR code | N/A (visual) | 15x15mm min | Rising - replaces URL and vCard |
The total character count across all elements typically ranges from 150 to 300 characters. A bilingual Japanese-English card with full address on both sides can exceed 400 characters total. The critical constraint is not the total count but the per-element count at readable font sizes. A name at 12pt takes roughly 3 times the vertical space of an address line at 6pt, so the visual weight of each element is not proportional to its character count.
Font size below 6pt is generally considered unreadable for body text on a printed card. At 6pt, a single line on a 91mm-wide card (with 5mm margins on each side) can hold approximately 60-70 characters in a standard sans-serif font. This means a full Japanese address (40-60 characters) fits on one line, but a long email address (35+ characters) combined with a phone number may need to wrap or be placed on a separate line.
QR Codes as Text Reduction Strategy
QR codes on business cards serve a dual purpose: they provide a scannable digital contact exchange and they reduce the amount of printed text needed on the card.
| QR content type | Data size | Text it replaces | Character savings |
|---|---|---|---|
| URL only | ~30-60 bytes | Printed URL | 15-40 chars |
| vCard (basic) | ~200-400 bytes | Name, phone, email | 50-80 chars |
| vCard (full) | ~400-800 bytes | All contact info + address | 100-200 chars |
| LinkedIn profile URL | ~40-50 bytes | LinkedIn URL text | 30-45 chars |
| Digital business card service | ~30-50 bytes | Multiple URLs and social links | 60-120 chars |
A full vCard QR code can replace 100-200 characters of printed text - the address, phone number, email, and URL - with a single 15x15mm square. This frees up roughly 30-40% of the card's text area, which can be used for larger font sizes, more white space, or additional information like social media handles. The trade-off is that the QR code itself occupies physical space (minimum 15x15mm for reliable scanning), and not everyone will scan it. For a deeper look at QR code data capacity and how text length affects code complexity, see QR Code Data Capacity.
The data size of the QR code directly affects its visual complexity. A URL-only QR code (~40 bytes) produces a simple, easily scannable pattern. A full vCard with address and notes (~600 bytes) produces a dense, complex pattern that requires a larger physical size to scan reliably. At 15x15mm, a complex vCard QR code may fail to scan under poor lighting or with older phone cameras. The practical recommendation is to encode a URL pointing to a digital business card service rather than embedding all contact data directly in the QR code.
Font Size and Readability Thresholds
The relationship between font size, character count per line, and readability determines the fundamental layout constraints of a business card.
| Font size (pt) | Chars per line (81mm width) | Readability | Typical use |
|---|---|---|---|
| 14pt | ~30 chars | Excellent - readable at arm's length | Name (primary) |
| 12pt | ~35 chars | Very good | Name, company name |
| 10pt | ~42 chars | Good - comfortable reading distance | Title, company name |
| 8pt | ~52 chars | Adequate - requires close viewing | Contact details, department |
| 7pt | ~60 chars | Minimum for most readers | Address, secondary info |
| 6pt | ~70 chars | Difficult - fine print territory | Legal text, disclaimers |
| 5pt | ~84 chars | Unreadable for many people | Not recommended |
The 81mm printable width (91mm card minus 5mm margins on each side) is the hard constraint. At 8pt - the most common size for contact details - you get approximately 52 characters per line. An email address like "firstname.lastname@longcompanyname.co.jp" is 42 characters, leaving only 10 characters of breathing room on the line. If the email is longer, you must either reduce the font size (hurting readability) or move it to its own line (consuming vertical space).
For bilingual cards, the vertical space constraint is even tighter. A card with Japanese text on the front and English on the back doubles the available space, but a card with both languages on one side must fit everything into 55mm of height (minus margins). With 5mm top and bottom margins, you have 45mm of usable height. At 8pt (roughly 2.8mm per line with leading), that is approximately 16 lines. A bilingual card with name, title, company, department, address, phone, email, and URL in both languages needs 14-16 lines minimum, leaving almost no room for white space. For more on how LinkedIn profiles handle similar text constraints digitally, see LinkedIn Profile Tips.
Design Decisions That Reduce Character Count
When text exceeds the available space, designers use specific techniques to reduce character count without losing essential information.
| Technique | Example | Chars saved |
|---|---|---|
| Abbreviate department | "R&D Dept." instead of "Research and Development Department" | ~35 chars |
| Drop "http://" from URL | "example.com" instead of "https://www.example.com" | ~12 chars |
| Use icons for phone/email | Phone icon instead of "TEL:" label | 4-6 chars per item |
| Abbreviate address | Drop building floor if in QR vCard | 10-20 chars |
| Use QR for full contact | Replace URL + social links with QR | 40-80 chars |
| Single-language layout | One language per side on double-sided card | Halves per-side text |
The most effective single technique is moving to a double-sided bilingual layout. Splitting Japanese and English onto separate sides immediately halves the text density per side, allowing larger fonts and more white space. The second most effective technique is replacing the printed URL with a QR code, which saves 15-40 characters and provides a better user experience (scanning is faster than typing a URL).
Icon-based labels (a phone icon instead of "TEL:", an envelope icon instead of "Email:") save 4-6 characters per contact line. On a card with four contact methods, that is 16-24 characters saved - enough to increase the font size by one point or add meaningful white space between elements. These small optimizations compound: a card that applies all of these techniques can fit the same information in 30-40% fewer characters than a text-only layout.
For books on business card design and typography, related books are available on Amazon.