Celsius to Fahrenheit Converter
Enter the value that you want to convert Celsius (°C) to Fahrenheit (°F) or Fahrenheit to Celsius.Also written as °C to °F conversion.
1 Celsius = 33.8000000 Fahrenheit
Formula: °F = (°C × 9/5) + 32
°C to °F — Celsius to Fahrenheit
10 Celsius = 50.00000 Fahrenheit
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Celsius to Fahrenheit for Weather & Cooking
Americans traveling abroad need to interpret weather forecasts in Celsius — knowing that 30°C is hot (86°F) and 0°C is freezing (32°F). Oven temperatures in European recipes use Celsius (180°C = 356°F). Medical professionals convert body temperature between the scales when working with international patients or reference materials.
Celsius vs Fahrenheit
Understanding the Celsius
The Celsius scale was proposed by Swedish astronomer Anders Celsius in 1742, originally with 0° as the boiling point and 100° as freezing — later inverted.
Celsius (°C) is the most widely used temperature scale globally, adopted by every country except the United States for everyday use. It sets water's freezing point at 0°C and boiling point at 100°C at standard atmospheric pressure. The scale is used in weather forecasts, cooking, medicine (normal body temperature ≈ 37°C), scientific research, and industrial processes worldwide. Since 1954, it has been defined relative to the Kelvin scale: °C = K − 273.15.
What is Fahrenheit?
Daniel Gabriel Fahrenheit developed this scale in 1724, setting 0°F as the temperature of a brine solution and 96°F as human body temperature.
Fahrenheit (°F) remains the primary temperature scale in the United States, the Bahamas, and a few other countries. Water freezes at 32°F and boils at 212°F. Americans use it for weather reports, cooking (oven temperatures: 350°F, 400°F, 450°F), thermostat settings, and body temperature (98.6°F normal). The scale offers finer resolution for weather — the 0-100°F range covers most human-habitable temperatures.
Temperature Scales in Context
Temperature conversion is one of the few non-linear unit conversions people encounter daily. Celsius dominates scientific work and most countries, Fahrenheit remains standard in the US for weather and cooking, Kelvin is required in thermodynamics and gas law calculations, and Rankine appears in some US engineering applications. Converting between these scales requires formulas rather than simple multiplication.
Celsius to Fahrenheit metric conversion table
| 0.01 °C | = | 32.01800 °F |
| 0.1 °C | = | 32.18000 °F |
| 1 °C | = | 33.80000 °F |
| 2 °C | = | 35.60000 °F |
| 3 °C | = | 37.40000 °F |
| 4 °C | = | 39.20000 °F |
| 5 °C | = | 41.00000 °F |
| 6 °C | = | 42.80000 °F |
| 7 °C | = | 44.60000 °F |
| 8 °C | = | 46.40000 °F |
| 9 °C | = | 48.20000 °F |
| 10 °C | = | 50.00000 °F |
| 11 °C | = | 51.80000 °F |
| 12 °C | = | 53.60000 °F |
| 13 °C | = | 55.40000 °F |
| 14 °C | = | 57.20000 °F |
| 15 °C | = | 59.00000 °F |
| 16 °C | = | 60.80000 °F |
| 17 °C | = | 62.60000 °F |
| 18 °C | = | 64.40000 °F |
| 19 °C | = | 66.20000 °F |
| 20 °C | = | 68.00000 °F |
| 30 °C | = | 86.00000 °F |
| 40 °C | = | 104.00000 °F |
| 50 °C | = | 122.00000 °F |
| 60 °C | = | 140.00000 °F |
| 70 °C | = | 158.00000 °F |
| 80 °C | = | 176.00000 °F |
| 90 °C | = | 194.00000 °F |
| 100 °C | = | 212.00000 °F |
| 200 °C | = | 392.00000 °F |
| 300 °C | = | 572.00000 °F |
| 400 °C | = | 752.00000 °F |
| 500 °C | = | 932.00000 °F |
| 600 °C | = | 1112.00000 °F |
| 700 °C | = | 1292.00000 °F |
| 800 °C | = | 1472.00000 °F |
| 900 °C | = | 1652.00000 °F |
| 1000 °C | = | 1832.00000 °F |
How to Convert °C to °F (Celsius to Fahrenheit)?
We can convert Celsius to Fahrenheit by using an example.
Example:
Convert 20 Celsius to Fahrenheit?
We know 1 Celsius = 33.8000000 Fahrenheit; 1 Fahrenheit = -17.2222222 Celsius.
20 Celsius = ___°F
20 × 33.8000000 = 68.00000 °F (we know 1 Celsius = 33.8000000 Fahrenheit)
Answer:
20 Celsius = 68.00000 Fahrenheit
How to Convert Celsius to Fahrenheit (Step-by-Step)
The Celsius to Fahrenheit formula accounts for both the different degree sizes and the offset between their zero points. Fahrenheit degrees are smaller (each is 5/9 of a Celsius degree), and 0 °C corresponds to 32 °F.
- Write down the temperature in Celsius (°C).
- Multiply the Celsius value by 9/5 (or 1.8).
- Add 32 to the result.
- The final number is the temperature in Fahrenheit (°F).
Celsius to Fahrenheit Quick Reference
Everyday temperatures you will encounter in weather, cooking, and health:
| Celsius | Fahrenheit |
|---|---|
| 0 °C | 32 °F |
| 10 °C | 50 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 37 °C | 98.6 °F |
| 100 °C | 212 °F |
| 180 °C | 356 °F |
| −40 °C | −40 °F |
Worked Examples: Celsius to Fahrenheit
Question 1: Convert 25 °C to Fahrenheit.
Solution:
Formula: °F = (°C × 9/5) + 32
°F = (25 × 9/5) + 32
°F = (25 × 1.8) + 32
°F = 45 + 32
Answer: 25 °C = 77 °F
Question 2: A recipe says to preheat the oven to 200 °C. What is that in Fahrenheit?
Solution:
°F = (°C × 9/5) + 32
°F = (200 × 1.8) + 32
°F = 360 + 32
Answer: 200 °C = 392 °F
Question 3: The weather forecast says 15 °C. Convert to Fahrenheit.
Solution:
°F = (15 × 9/5) + 32
°F = (15 × 1.8) + 32
°F = 27 + 32
Answer: 15 °C = 59 °F
Question 4: Convert −10 °C (a cold winter day) to Fahrenheit.
Solution:
°F = (−10 × 9/5) + 32
°F = (−10 × 1.8) + 32
°F = −18 + 32
Answer: −10 °C = 14 °F
Question 5: Normal human body temperature is 37 °C. Verify in Fahrenheit.
Solution:
°F = (37 × 9/5) + 32
°F = (37 × 1.8) + 32
°F = 66.6 + 32
Answer: 37 °C = 98.6 °F
Practice Questions
Try solving these on your own to test your understanding:
- Convert 22 °C (a comfortable room) to Fahrenheit. (Answer: 71.6 °F)
- What is 35 °C in Fahrenheit? (Answer: 95 °F)
- Convert 0 °C to Fahrenheit. (Answer: 32 °F)
- A pool is heated to 28 °C. What is that in °F? (Answer: 82.4 °F)
- Convert −25 °C to Fahrenheit. (Answer: −13 °F)
- An oven is set to 220 °C. Find °F. (Answer: 428 °F)
Why Do We Have Two Temperature Scales?
Fahrenheit was proposed by Daniel Gabriel Fahrenheit in 1724, using the freezing point of a brine solution as 0 and approximate human body temperature as 96. Celsius, defined by Anders Celsius in 1742, anchored the scale at the freezing (0 °C) and boiling (100 °C) points of pure water at sea level. Most countries adopted Celsius for its simplicity, while the United States retained Fahrenheit for everyday use.
Celsius to Fahrenheit in Cooking
Many recipes from Europe and Australia list oven temperatures in Celsius. Common baking temperatures include 160 °C (320 °F) for slow baking, 180 °C (356 °F) for standard cakes, 200 °C (392 °F) for roasting, and 220 °C (428 °F) for pizza and bread. When converting, round to the nearest 5 or 10 degrees for practical use.
Travel Tips: Understanding Weather in Celsius
If you are traveling from the US to a country using Celsius, remember these landmarks: below 0 °C means freezing conditions; 10–15 °C is jacket weather; 20–25 °C is pleasant; above 30 °C is hot; above 40 °C is dangerously hot. The crossover point where Celsius equals Fahrenheit is −40°, so extreme cold reads the same on both scales.
Key Takeaways
- Formula: °F = (°C × 9/5) + 32.
- Each Celsius degree equals 1.8 Fahrenheit degrees.
- Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F).
- −40° is the same on both scales.
- Quick estimate: double °C and add 30 for an approximate °F value.
- Normal body temperature is 37 °C = 98.6 °F.
Celsius to Fahrenheit Conversion Formula
°F = (°C × 9/5) + 32
1 Celsius = 33.8000000 Fahrenheit
1 Fahrenheit = -17.2222222 Celsius
Frequently Asked Questions
How many Fahrenheit are in 1 Celsius?
1 Celsius equals 33.80000 Fahrenheit. Note: Temperature conversion uses a formula, not simple multiplication.
How do I convert Celsius to Fahrenheit?
Use the conversion formula shown above. For example, 41.00 Fahrenheit equals 5 Celsius. Temperature scales have different zero points, so a formula (not simple multiplication) is required.
How do I convert Fahrenheit to Celsius?
Use the reverse formula. 1 Fahrenheit equals -17.22222 Celsius. See the formula section above for the exact equation.
What is 10 Celsius in Fahrenheit?
10 Celsius is equal to 50.00000 Fahrenheit.
What is 100 Celsius in Fahrenheit?
100 Celsius is equal to 212.00000 Fahrenheit.