Decimal to Fraction Calculator — 64ths Precision
Nearest 1/16
Nearest 1/32
Nearest 1/64
* Highlighted card indicates the most precise match.
Step-by-Step 64ths Solution
Visual Representation
Understanding 64ths Precision
For ultra-precision work like machining, detailed drafting, or specialized metalworking, 1/16 and 1/32 fractions might not provide enough accuracy. Rounding to the nearest 1/64 gives a finer measurement that closely matches the original decimal.
How to Calculate 64ths Manually
- Take the fractional part of your decimal (e.g., for 2.140625, take 0.140625).
- Multiply that decimal by 64 (0.140625 × 64 = 9).
- Round to the nearest whole number (9).
- Place that number over 64 to get your fraction (9/64).
- Simplify the fraction if possible (e.g., 8/64 = 1/8).
64ths Reference Table (Partial)
| Fraction | Decimal |
|---|---|
| 1/64 | 0.015625 |
| 3/64 | 0.046875 |
| 5/64 | 0.078125 |
| 7/64 | 0.109375 |
| 1/8 (8/64) | 0.125 |
| 9/64 | 0.140625 |
| 11/64 | 0.171875 |
| 13/64 | 0.203125 |
| 15/64 | 0.234375 |
| 1/4 (16/64) | 0.25 |
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Frequently Asked Questions
Common questions about 64ths precision and machining
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01 How do you convert a decimal to the nearest 64th?
Multiply the decimal by 64, round to the nearest whole number, and make it the numerator of a fraction with a denominator of 64. Simplify the fraction if possible.
02 What industries use 1/64 inch precision?
Machining, engineering, drafting, and specialized metalworking frequently rely on 64ths for high-accuracy engineering tolerances.
03 Is it possible to read 64ths on a tape measure?
Most standard tape measures do not show 64ths. You will need a machinist steel ruler, depth gauge, or precision caliper to measure 1/64ths accurately.
04 What is 1/64 in decimal format?
1/64 is equivalent to exactly 0.015625 in decimal.
05 Why not just use decimals for ultra-precise measurements?
While digital tools use decimals, many manual tools, drill bits, and standard hardware sizes are still classified by fractions like 64ths. Knowing the equivalent is crucial for compatibility.
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