What this calculator does
Clock hand angle works out the angle between the hour and minute hands at a given time. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
Formulahour hand = 30H + 0.5M; minute hand = 6M; angle = min(|diff|, 360−|diff|)
The inputs explained
| Field | What to enter |
|---|---|
| Hour (0–12) | A number. Starts at 3. |
| Minutes (0–59) | A number. Starts at 15. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with hour (0–12)
Every other input is held at the calculator’s starting values while hour (0–12) varies. Select any row to load that scenario into the calculator.