Decimal
0.375
What is 3/8 as a decimal and percent?
Answer
3/8 as a decimal is 0.375. As a percent, 3/8 is 37.5%.
Percent
37.5%
Step-by-step working
1
Divide the numerator by the denominator
To turn any fraction into a decimal, divide the top by the bottom.
3 ÷ 8 = 0.375
2
Multiply by 100 for the percent
Percent means "out of one hundred". Multiplying a decimal by 100 (or moving the decimal point two places to the right) gives the percent value.
0.375 × 100 = 37.5%
3
Round if needed
In this case 3/8 produces a clean terminating decimal — no rounding is needed.
Mini fraction-to-decimal calculator
Try other fractions:
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Decimal
0.375
Percent
37.5%
About this fraction
Three-eighths is common in carpentry and DIY, where rulers split inches into eighths. Also appears in fractional sizing for screws, drills, and pipe diameters.
Common conversions
Related fractions and their decimal / percent values for quick comparison.
| Fraction | Decimal | Percent |
|---|---|---|
| 1/8 | 0.125 | 12.5% |
| 3/8 | 0.375 | 37.5% |
| 5/8 | 0.625 | 62.5% |
| 7/8 | 0.875 | 87.5% |
| 1/2 | 0.5 | 50% |
| 1/3 | 0.(3) | 33.3333% |
| 2/3 | 0.(6) | 66.6667% |
Frequently asked questions
What is 3/8 as a decimal?
3/8 as a decimal is 0.375. The decimal terminates cleanly. Divide the numerator by the denominator: 3 ÷ 8 = 0.375. For most everyday work, round to two or three decimal places.
What is 3/8 as a percent?
3/8 as a percent is 37.5%. Take the decimal value (0.375) and move the decimal point two places to the right — the same as multiplying by 100.
Is 3/8 already in lowest form?
Yes. 3/8 is already in lowest form because the greatest common divisor of 3 and 8 is 1.
Does 3/8 terminate or recur as a decimal?
3/8 terminates as a decimal. The denominator (after simplifying to 3/8) has only 2 and 5 as prime factors, so the long division ends.