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Converters 4 min read December 2025

Celsius to Fahrenheit: 25 Common Temperatures You Need to Know

Body temperature, oven settings, weather forecasts — a quick-reference table for the temperatures that actually matter in everyday life.

The Formula

°C to °F: (°C × 9/5) + 32 = °F

°F to °C: (°F − 32) × 5/9 = °C

Quick mental trick: Double the Celsius, subtract 10%, then add 32. Example: 20°C → 40 − 4 + 32 = 68°F (exact: 68°F ✓). It's not perfect but it's close enough for weather.

25 Common Temperature Conversions

Celsius (°C)Fahrenheit (°F)Common Reference
−40°C−40°FOnly point where both scales meet
−20°C−4°FSevere winter cold
−10°C14°FVery cold winter day
0°C32°FWater freezing point
5°C41°FRefrigerator temperature
10°C50°FCool autumn day
15°C59°FMild spring day
20°C68°FRoom temperature
21°C69.8°FIdeal indoor temperature
25°C77°FWarm summer day
30°C86°FHot summer day
35°C95°FVery hot, heat advisory territory
37°C98.6°FNormal human body temperature
38°C100.4°FFever threshold
40°C104°FHigh fever, seek medical advice
100°C212°FWater boiling point (sea level)
150°C302°FOven: low/warm setting
160°C320°FOven: slow cook
180°C356°FOven: moderate bake
190°C374°FOven: standard roast
200°C392°FOven: hot roast
220°C428°FOven: very hot / pizza
230°C446°FOven: maximum / bread crust
−18°C0°FFreezer temperature (US standard)
−196°C−321°FLiquid nitrogen

For any temperature not in this table, use the temperature converter below — it also handles Kelvin and handles the formula automatically.

Convert any temperature instantly Use the free Temperature Converter on CalcPocket — no signup required.
Temperature Converter