Temperature tools

Small tools that answer one question each. All of them work by typing a value in — nothing here needs your location.

• Celsius and Fahrenheit converter Convert either way instantly, with the formula shown and a table worth keeping.
• Degree symbol to copy One tap for °, °C, °F or K — plus the lookalikes that quietly break your text.
• Kelvin converter All three scales at once, with absolute zero as the anchor.
• Wind chill calculator Either scale, either wind unit, with frostbite times and the formula's real limits.
• Average temperature by month Normal high, low and mean for any month, from thirty years of daily records.
• Pipe freeze risk How many hours you have tonight, given where the pipe runs and whether it is insulated.
• First frost date lookup Frost dates as a probability window, from 30 years of daily minimum temperatures.
• Thermostat savings What a setback is worth on your bill, with the arithmetic and assumptions shown.
• Tools Free temperature tools: a Celsius and Fahrenheit converter, the degree symbol to copy, a wind chill calculator, frost dates and climate normals.

Also on the site

• Guides Plain explanations of the temperature questions that come up around a house, a garden and a forecast: freezing pipes, wind chill, feels-like, condensation and frost.
• Scenarios Go or no-go answers for the jobs the temperature decides: painting, walking the dog, covering plants, pouring concrete, turning the heating on.