Unit Converter Free: Convert Any Unit Online

# Unit Converter Free: Convert Any Unit Online

Need to convert units quickly? Our free unit converter supports 50+ unit types including length, weight, temperature, currency, and more.

Why Use a Unit Converter?

• **Cooking** - Convert cups to grams, Fahrenheit to Celsius
• **Travel** - Convert miles to kilometers, pounds to kilograms
• **Science** - Convert meters to feet, liters to gallons
• **Finance** - Convert currency (USD to EUR, CNY to USD)
• **Construction** - Convert inches to centimeters, square feet to square meters

FreeToolbox Unit Converter

**Features:** - 100% free, no registration - 50+ unit categories - Instant conversion - Currency rates (daily update) - Mobile friendly

**Try it:** [Unit Converter](/tools/unit-converter)

Supported Unit Categories

Length / Distance | From | To | Common Use | |------|-----|-------------| | Miles (mi) | Kilometers (km) | Travel distance | | Feet (ft) | Meters (m) | Height, construction | | Inches (in) | Centimeters (cm) | Screen size, body measurements | | Yards (yd) | Meters (m) | Sports fields |

Weight / Mass | From | To | Common Use | |------|-----|-------------| | Pounds (lb) | Kilograms (kg) | Body weight | | Ounces (oz) | Grams (g) | Cooking, shipping | | Stones (st) | Kilograms (kg) | Body weight (UK) | | Tons (US) | Tonnes (t) | Heavy objects |

Temperature | From | To | Common Use | |------|-----|-------------| | Fahrenheit (°F) | Celsius (°C) | Weather, cooking | | Celsius (°C) | Fahrenheit (°F) | Travel to US | | Kelvin (K) | Celsius (°C) | Scientific |

Volume | From | To | Common Use | |------|-----|-------------| | Gallons (gal) | Liters (L) | Fuel, liquids | | Quarts (qt) | Liters (L) | Cooking | | Cups | Milliliters (mL) | Cooking | | Fluid oz (fl oz) | Milliliters (mL) | Cosmetics |

Area | From | To | Common Use | |------|-----|-------------| | Square feet (sq ft) | Square meters (m²) | Real estate | | Acres | Hectares (ha) | Land area | | Square miles (sq mi) | Square kilometers (km²) | Large areas |

Speed | From | To | Common Use | |------|-----|-------------| | MPH | km/h | Driving speed | | Knots | km/h | Aviation, marine | | Mach | km/h | Supersonic speed |

Currency Conversion

**Supported currencies:** - USD (US Dollar) - EUR (Euro) - GBP (British Pound) - JPY (Japanese Yen) - CNY (Chinese Yuan) - CAD (Canadian Dollar) - AUD (Australian Dollar) - And 50+ more

**Note:** Currency rates update daily.

How to Use

Step 1: Select Category Choose from length, weight, temperature, etc.

Step 2: Enter Value Type the number you want to convert.

Step 3: Select Units Choose "From" unit and "To" unit.

Step 4: Get Result Conversion happens instantly.

Common Conversion Formulas

Length (Miles to Km) \km = miles × 1.60934 \ ### Weight (Pounds to Kg) \kg = pounds × 0.453592 \ ### Temperature (Fahrenheit to Celsius) \°C = (°F - 32) × 5/9 \ ### Temperature (Celsius to Fahrenheit) \°F = (°C × 9/5) + 32 \ ## Use Cases

Cooking - Convert 350°F to °C (177°C) - Convert 2 cups to mL (473 mL) - Convert 1 pound to grams (454 g)

Travel - Convert 100 miles to km (161 km) - Convert 70°F to °C (21°C) - Convert $100 USD to EUR

Fitness - Convert 160 pounds to kg (72.6 kg) - Convert 6 feet to cm (183 cm) - Convert 5 km to miles (3.1 mi)

Science / Engineering - Convert 100 meters to feet (328 ft) - Convert 50 kg to pounds (110 lb) - Convert 25°C to °F (77°F)

Mobile Friendly

Our tool works on: - **iPhone** (Safari, Chrome) - **Android** (Chrome, Firefox) - **iPad and tablets** - **Desktop browsers**

Privacy & Security

• **No registration** - No account needed
• **No tracking** - We don't track conversions
• **No limits** - Unlimited conversions

Comparison with Other Tools

Frequently Asked Questions

**Q: Is the currency rate accurate?** A: We use daily updated rates from reliable sources.

**Q: Can I convert multiple units at once?** A: Currently one conversion at a time (batch coming soon).

**Q: Is there a limit?** A: No, unlimited free conversions.

**Q: Does it work offline?** A: No, requires internet for currency rates.

Start Converting Now

Ready to convert units? Try our free tool:

[Unit Converter](/tools/unit-converter)