0.375 as a fraction is 3/8. As a percent it is 37.5%. The fraction is in lowest terms: the numerator and denominator share no common factor other than 1.
How to convert 0.375 to a fraction
Step 1. Write 0.375 over a power of ten. It has 3 digits after the decimal point, so the denominator is 1000: 0.375 = 375/1,000.
Step 2. Find the greatest common divisor of 375 and 1,000, which is 125.
Step 3. Divide the top and bottom by 125: 375 ÷ 125 = 3 and 1,000 ÷ 125 = 8. The result is 3/8.
The denominator 8 factors into 2 × 2 × 2, so this decimal terminates, as every decimal that is written with a finite number of digits does.
0.375 compared with nearby decimals
These decimals have the same number of places as 0.375, so the same method gives their fractions:
| Decimal | Fraction | Percent |
|---|---|---|
| 0.373 | 373/1000 | 37.3% |
| 0.374 | 187/500 | 37.4% |
| 0.376 | 47/125 | 37.6% |
| 0.377 | 377/1000 | 37.7% |
Multiples of 0.375
Scaling the fraction is a quick way to check your work. Each row multiplies 0.375 (3/8) by a whole number:
| Multiple | Decimal | Fraction | Mixed number |
|---|---|---|---|
| 2 × 0.375 | 0.75 | 3/4 | 3/4 |
| 3 × 0.375 | 1.125 | 9/8 | 1 1/8 |
| 4 × 0.375 | 1.5 | 3/2 | 1 1/2 |
| 5 × 0.375 | 1.875 | 15/8 | 1 7/8 |
| 10 × 0.375 | 3.75 | 15/4 | 3 3/4 |
3/8 of an inch
Tape measures and drill bits use binary fractions of an inch. Since one inch is defined as exactly 25.4 millimetres, 3/8 inch equals 3 × 25.4 ÷ 8 = 9.5250 mm.
Change the decimal in the calculator above to convert any other number; leave the precision on Exact fraction for the precise answer.