The temperature converter is a free online tool that helps you convert between common units quickly and accurately. It supports 3 units including Celsius (°C), Fahrenheit (°F), Kelvin (K). The core conversion formula is: °F = (°C × 9/5) + 32 | K = °C + 273.15. For example, 1 Celsius equals approximately 1.8 Fahrenheit. Conversely, 1 Fahrenheit equals approximately 0.555556 Celsius. Common conversions: 5 °C = 9 °F, 10 °C = 18 °F, 25 °C = 45 °F, 50 °C = 90 °F, 100 °C = 180 °F. This converter is useful for students, engineers, scientists, and professionals who need accurate common unit conversions. Whether you are working on homework, technical specifications, research data, or everyday measurements, this tool provides instant, reliable results. All conversions are calculated relative to a single base unit for consistency and precision across all supported units. Absolute zero (0 K or -273.15°C) is the lowest possible temperature in the universe. Water freezes at 0°C (32°F) and boils at 100°C (212°F) at sea level.