Length Converter
Convert between inches, feet, centimeters, meters, yards, and miles.
Area Converter
Convert between square feet, square meters, acres, and hectares.
Volume Converter
Convert between cups, liters, gallons, milliliters, and fluid ounces.
Weight Converter
Convert between pounds, kilograms, ounces, and grams.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Screen Size Converter
Calculate screen dimensions from diagonal size and aspect ratio.
Clothing Size Converter
Convert between US, UK, and EU clothing sizes for men and women.
Shoe Size Converter
Convert between US, UK, and EU shoe sizes for men and women.
Ring Size Converter
Convert between US, UK, EU ring sizes and diameter in mm.
Paper Size Reference
Common paper size conversions and dimensions.
| Paper Size | Inches | Millimeters | Centimeters |
|---|---|---|---|
| Letter (US) | 8.5" × 11" | 216 × 279 mm | 21.6 × 27.9 cm |
| Legal (US) | 8.5" × 14" | 216 × 356 mm | 21.6 × 35.6 cm |
| A4 (ISO) | 8.27" × 11.69" | 210 × 297 mm | 21 × 29.7 cm |
| A5 (ISO) | 5.83" × 8.27" | 148 × 210 mm | 14.8 × 21 cm |
| A3 (ISO) | 11.69" × 16.54" | 297 × 420 mm | 29.7 × 42 cm |