6.35 mm to Inches
Answer
0.25 in
6.35 mm = 0.25 in exactly (1/4 in)
6.35 millimeters equals exactly 0.25 inches, or 1/4 inch, with no rounding needed. It is the plug diameter of a standard 1/4 in phone jack, the connector used on electric guitars, studio headphones, and mixing consoles, and it is also a common 1/4 in hex bit and socket drive size. Because 6.35 mm is exactly one quarter of 25.4 mm, every multiple of it lines up cleanly with a quarter-inch fraction.
Try another mm value
Decimal inches
0.25"
Nearest 1/64
1/4"
Centimeters
0.635 cm
Related values
| Value | Result |
|---|---|
| Decimal inches | 0.25 in |
| Nearest 1/16 in | 1/4 in |
| Nearest 1/32 in | 1/4 in |
| Nearest 1/64 in | 1/4 in |
| Centimeters | 0.635 cm |
How the conversion works
- Divide by 25.4. One inch equals exactly 25.4 mm, and 6.35 is exactly one quarter of that number. So 6.35 ÷ 25.4 = 0.25 inches exactly, with no repeating decimal or rounding error.
- Check the fraction. Multiplying 0.25 by 64 gives 16 exactly, so there is no decimal remainder to round. The raw fraction is 16/64 before simplifying.
- Simplify and read the answer. Dividing 16 and 64 by their greatest common divisor, 16, gives 1/4 in. That makes 6.35 mm, like 12.7 mm and 25.4 mm, one of the exact quarter-inch reference points in the metric-imperial system.
Frequently Asked Questions
6.35 mm equals exactly 0.25 inches, or 1/4 in. This conversion has no rounding at any fraction precision, since 6.35 mm is defined as exactly a quarter of the 25.4 mm inch.
Related Tools
🔢
Decimal to Fraction
Any decimal
➗
Fraction to Decimal
Any fraction
📐
MM to Inches
Metric converter
📊
Decimal Chart
Full reference
📏
12.7 mm to Inches
Half inch
📏
25.4 mm to Inches
Full inch
Back to the main calculator.