What temperature is the same in Celsius and Fahrenheit?

Celsius and Fahrenheit scales meet at −40°. That is, −40°C = −40°F.

Temperature Converter – Celsius, Fahrenheit & Kelvin Online

Q: How do you convert Celsius to Fahrenheit?

To convert Celsius to Fahrenheit, use the formula: °F = (°C × 9/5) + 32. For example, 100°C = (100 × 9/5) + 32 = 212°F.

Q: How do you convert Fahrenheit to Celsius?

To convert Fahrenheit to Celsius, use the formula: °C = (°F − 32) × 5/9. For example, 98.6°F = (98.6 − 32) × 5/9 = 37°C.

Q: What is 0 Kelvin in Celsius?

0 Kelvin (absolute zero) is equal to −273.15°C. Kelvin is always a positive value — there is no temperature below absolute zero.

Instantly convert any temperature between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with Calcon's free Temperature Converter. All three conversions update in real time as you type — no button needed.

Temperature Conversion Formulas

Celsius to Others

°F = (°C × 9/5) + 32

K = °C + 273.15

Fahrenheit to Others

°C = (°F − 32) × 5/9

K = (°F − 32) × 5/9 + 273.15

Kelvin to Others

°C = K − 273.15

°F = (K − 273.15) × 9/5 + 32

Key Reference Points

Water freezes: 0°C = 32°F = 273.15 K

Water boils: 100°C = 212°F = 373.15 K

Body temp: 37°C = 98.6°F = 310.15 K

Absolute zero: −273.15°C = −459.67°F = 0 K

Frequently Asked Questions

How do you convert Celsius to Fahrenheit?

Use the formula: °F = (°C × 9/5) + 32

Example: 25°C = (25 × 1.8) + 32 = 45 + 32 = 77°F

How do you convert Fahrenheit to Celsius?

Use the formula: °C = (°F − 32) × 5/9

Example: 98.6°F = (98.6 − 32) × 5/9 = 66.6 × 0.556 = 37°C

What is 0 Kelvin in Celsius?

0 Kelvin is −273.15°C and −459.67°F. This is called absolute zero — the coldest theoretically possible temperature. Nothing can be colder than 0 K.

At what temperature are Celsius and Fahrenheit equal?

Celsius and Fahrenheit are equal at −40°. That is, −40°C = −40°F. You can verify this using the formula: −40 × 9/5 + 32 = −72 + 32 = −40°F.

Temperature Converter – Celsius, Fahrenheit & Kelvin