(01) — TOOLS
Celsius, Fahrenheit, Kelvin.
One field, the other two follow. Absolute zero (0 K) is the floor.
At a glance
- Celsius ↔ Fahrenheit ↔ Kelvin converter, free, in the browser.
- Formulas: °F = °C × 9/5 + 32; K = °C + 273.15.
- Absolute zero (0 K / −273.15 °C) is the physical floor.
- Nothing is sent to a server.
(02) — FORMULAS
The three scales.
01 — Celsius
Everyday scale. Water: 0 °C freeze, 100 °C boil at sea level.
02 — Fahrenheit
°F = °C × 9/5 + 32. Freeze at 32 °F, boil at 212 °F.
03 — Kelvin
K = °C + 273.15. Absolute zero = 0 K. No negative kelvin.
(03) — FAQ
Short answers.
- What is the exact formula?
- F = C × 9/5 + 32; K = C + 273.15. Inverse conversions follow. Local math; display rounds to 2 decimals.
- Why can’t Kelvin go below 0?
- 0 K is absolute zero. A lower value has no physical meaning; the tool flags it.
- Is anything sent to a server?
- No. It stays in the tab.