🔄 Unit Converter
Instant two-way conversion for length (with fractions & mm precision), weight, volume, and temperature.
⅛ Fraction to Decimal Converter (for Inches)
Enter a fraction (e.g. 3/8) to get the decimal equivalent, then use it above.
| Unit | Value |
|---|---|
| Millimeters | 1,000 mm |
| Centimeters | 100 cm |
| Inches | 39.3701 in |
| Feet | 3.28084 ft |
| Yards | 1.09361 yd |
| Unit | Value |
|---|---|
| Grams | 1,000 g |
| Milligrams | 1,000,000 mg |
| Ounces | 35.274 oz |
| Pounds | 2.20462 lb |
| Stone | 0.157473 st |
| Unit | Value |
|---|---|
| Milliliters | 1,000 mL |
| Fluid Ounces (US) | 33.814 fl oz |
| Cups (US) | 4.227 cups |
| Pints (US) | 2.113 pt |
| Quarts (US) | 1.057 qt |
| Gallons (US) | 0.2642 gal |
| Reference | °C | °F | K |
|---|---|---|---|
| Absolute Zero | −273.15 | −459.67 | 0 |
| Water Freezes | 0 | 32 | 273.15 |
| Body Temperature | 37 | 98.6 | 310.15 |
| Water Boils | 100 | 212 | 373.15 |
| Oven (moderate) | 177 | 350 | 450.15 |
About This Unit Converter
This converter provides instant two-way conversion between all common metric and imperial units. Click the ⇄ swap arrow to reverse the direction. All conversions use precise scientific conversion factors.
Length Converter — Fraction & Millimeter Support
The length tab supports all units from nanometers up to miles. For working with imperial measurements like lumber, hardware, or machined parts, use the Fraction to Decimal helper — enter any fraction (1/4, 3/8, 5/16, etc.) to get its decimal equivalent in inches before converting.
Millimeter precision is especially important in engineering, woodworking, and manufacturing. The mm ↔ inch conversion (1 inch = 25.4 mm exactly) is an internationally defined standard.
Weight Converter
Supports milligrams through metric tons and includes UK stone (used for body weight in the UK and Ireland) and both US short tons and UK long tons.
Volume Converter
Note that US and UK volume measurements differ significantly: a US fluid ounce = 29.5735 mL, while a UK fluid ounce = 28.4131 mL. A US gallon = 3.785 L; a UK gallon = 4.546 L. Always specify which system you're using for cooking or industrial applications.
Temperature Converter
Celsius is used worldwide for science and daily life. Fahrenheit is used primarily in the US. Kelvin (no degree symbol) is the SI base unit used in science — 0 K is absolute zero (−273.15°C). Rankine is used in some US engineering applications.