Candy Temperature Stage Display
Type your candy thermometer reading and see the named sugar stage — from thread through hard crack and caramel — displayed huge, with the full stage ladder, a C/F toggle, and an altitude adjustment note.
Built by the AbraCalc team
How to play
- Type your candy thermometer's current reading into the temperature field as the syrup cooks.
- Watch the stage name update instantly — Thread, Soft Ball, Firm Ball, Hard Ball, Soft Crack, Hard Crack, or Caramel — along with what that stage is typically used for.
- Toggle °C/°F to match your thermometer, and scroll the ladder below to see every stage's range at once.
- If you're cooking above about 2,000 feet, enter your altitude for a note on how many degrees lower your effective targets run.
Sugar syrup moves through a well-defined ladder of stages as it cooks, and each stage name tells you what the syrup will do when it cools — thread for glazes, soft ball for fudge, hard crack for brittle, and on up to caramel. Rather than squinting at a chart taped to the cabinet, type your thermometer reading here and the matching stage name appears large, with its typical use, while the full ladder stays visible below so you can see how close you are to the next stage. A C/F toggle keeps the numbers matched to whatever thermometer you're holding, and an optional altitude field adjusts the guidance since sugar boils at a lower temperature the higher you cook.
Frequently asked questions
- Why are there small gaps between some stages, like 116-118°C?
- Those gaps are real and come directly from standard candy-making references — the stages were historically defined by how a dropped bit of syrup behaves in cold water, and not every degree between named tests has its own designation. If your reading falls in a gap, you're between two named stages; keep cooking toward the next one rather than assuming the display is missing something.
- Should I trust this over my candy thermometer?
- No — your thermometer is the actual measurement and this tool just names the stage that reading falls into. Clip-on candy thermometers can read a few degrees off depending on calibration and how deep the probe sits in the syrup, so for anything that needs precision, like a candy that keeps failing at the same step, verify your thermometer against boiling water (100°C / 212°F at sea level) first.
- Why does altitude change the target temperature?
- Water — and the water in sugar syrup — boils at a lower temperature as atmospheric pressure drops with elevation, which means syrup at a given stage of doneness will register a lower thermometer reading the higher you are. The altitude note applies the standard adjustment of roughly one degree Fahrenheit lower for every 500 feet of elevation so your effective targets stay accurate.