Temperature converter
Temperature scales have different zero points, so conversions add or subtract an offset as well as scaling. We handle that exactly.
1 degree Celsius = 33.8 degrees Fahrenheit
How it’s calculated
°F = °C × 9/5 + 32
- Temperature scales have different zero points, so the conversion adds or subtracts an offset as well as scaling.
- 1 °C = 33.8 °F · 1 °F = -17.22222222 °C
Show worked solutionFactor, unit cancellation and rounding, step by step
Use the exact scale definitions
Temperature scales have different zero points, so this is not a single multiplication: it adds or subtracts an offset as well as scaling. The definitions are exact (0 °C = 273.15 K; 1 °F = 5/9 K; absolute zero = −459.67 °F). Source: BIPM SI Brochure (9th ed.); NIST SP 811 / Handbook 44.
Step 1: scale
Scale by 9/5 (a Fahrenheit degree is 5/9 the size of a Celsius degree).
Step 2: add the offset
Add 32 to shift the zero point (water freezes at 32 °F).
Round the answer
Rounded to 5 significant figures.
Answer: 33.8 °F · Temperature readings include an offset; for a temperature difference use only the scale factor.
1 °C in other units
Batch convert °C → °F
- 1 °C = 33.8 °F
- 5 °C = 41 °F
- 10 °C = 50 °F
- 25 °C = 77 °F
Common temperature conversions
Temperature units and exact definitions
| Unit | System | Definition |
|---|---|---|
| Degree Celsius (°C) | SI (metric) | |
| Degree Fahrenheit (°F) | US customary | |
| Kelvin (K) | SI (metric) | |
| Degree Rankine (°R) | other |
Degrees Celsius to degrees Fahrenheit conversion table
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| -40 °C | −40 °F |
| -20 °C | −4 °F |
| -10 °C | 14 °F |
| 0 °C | 32 °F |
| 5 °C | 41 °F |
| 10 °C | 50 °F |
| 15 °C | 59 °F |
| 20 °C | 68 °F |
| 25 °C | 77 °F |
| 30 °C | 86 °F |
| 35 °C | 95 °F |
| 37 °C | 98.6 °F |
| 40 °C | 104 °F |
| 50 °C | 122 °F |
| 60 °C | 140 °F |
| 80 °C | 176 °F |
| 100 °C | 212 °F |
| 150 °C | 302 °F |
| 180 °C | 356 °F |
| 200 °C | 392 °F |
Frequently asked questions
Which temperature units can I convert?
degrees Celsius (°C), degrees Fahrenheit (°F), kelvin (K), degrees Rankine (°R).
How accurate are the results?
Every unit is stored with its exact defining factor (NIST SP 811, NIST Handbook 44 or the BIPM SI Brochure). Calculations use double-precision arithmetic and are rounded only for display, to 5 significant figures by default (trailing zeros dropped, so 1 km shows as 1000 m). You can choose Auto (up to 10 digits), fixed decimals or more significant figures, or switch to scientific or engineering notation.
Why is temperature conversion not a simple multiplication?
Celsius and Fahrenheit have different zero points, so converting requires an offset as well as a scale factor: °F = °C × 9/5 + 32. Kelvin and Rankine start at absolute zero.