Tabela de conversão de temperatura

Tabela de referência abrangente para a conversão entre diferentes escalas de temperatura. Encontre valores de conversão precisos para Celsius, Fahrenheit, Kelvin e Rankine em faixas comuns, culinárias e científicas.

Go to Temperature Converter

Switch ranges to see practical reference points for weather, baking, and lab work.

Temperature Chart

Temperature conversion chart (values shown for the selected range).

Tap/click any value to copy.

Frio extremo, a mesma temperatura de °C e °F

#1
Graus Fahrenheit (°F)-40.00°F
Kelvin (K)233.15 K
Rankine (°R)419.67°R
INSTRUÇÃOFrio extremo, a mesma temperatura de °C e °F

Temperatura típica do congelador doméstico

#2
Graus Fahrenheit (°F)-4.00°F
Kelvin (K)253.15 K
Rankine (°R)455.67°R
INSTRUÇÃOTemperatura típica do congelador doméstico

O ponto de congelamento da água

#3
Graus Fahrenheit (°F)32.00°F
Kelvin (K)273.15 K
Rankine (°R)491.67°R
INSTRUÇÃOO ponto de congelamento da água

Clima frio

#4
Graus Fahrenheit (°F)50.00°F
Kelvin (K)283.15 K
Rankine (°R)509.67°R
INSTRUÇÃOClima frio

Temperatura ambiente confortável

#5
Graus Fahrenheit (°F)68.00°F
Kelvin (K)293.15 K
Rankine (°R)527.67°R
INSTRUÇÃOTemperatura ambiente confortável

Dias quentes de verão

#6
Graus Fahrenheit (°F)86.00°F
Kelvin (K)303.15 K
Rankine (°R)545.67°R
INSTRUÇÃODias quentes de verão

Temperatura corporal normal

#7
Graus Fahrenheit (°F)98.60°F
Kelvin (K)310.15 K
Rankine (°R)558.27°R
INSTRUÇÃOTemperatura corporal normal

Dia de verão muito quente

#8
Graus Fahrenheit (°F)104.00°F
Kelvin (K)313.15 K
Rankine (°R)563.67°R
INSTRUÇÃODia de verão muito quente

Clima quente perigoso

#9
Graus Fahrenheit (°F)122.00°F
Kelvin (K)323.15 K
Rankine (°R)581.67°R
INSTRUÇÃOClima quente perigoso

Ponto de ebulição da água (nível do mar)

#10
Graus Fahrenheit (°F)212.00°F
Kelvin (K)373.15 K
Rankine (°R)671.67°R
INSTRUÇÃOPonto de ebulição da água (nível do mar)
Built on International Standards
SI (Kelvin) • ISO 80000-5 • Updated 2026 • Engineering Grade

This temperature conversion chart uses exact, widely accepted definitions for Celsius, Fahrenheit, Kelvin, and Rankine. It’s designed for quick reference in recipes, weather reports, and engineering notes, while keeping conversions consistent for scientific work.

Formulas and offsets are verified annually (2026) using authoritative standards so you can reuse the same conversions across spreadsheets, reports, and checklists with consistent rounding.

BIPM — The International System of Units (SI Brochure)
Authoritative reference for SI units including thermodynamic temperature and the Kelvin definition.
ISO 80000-5:2019
International standard for thermodynamics (temperature, energy, power) and consistent unit usage.
NIST Special Publication 811
Guide to SI usage and conversion references commonly used in engineering and science.
BIPM — ITS-90 (International Temperature Scale of 1990)
Reference points and definitions used for practical temperature realization and calibration contexts.
How the main temperature scales evolved
Kelvin (K)
Kelvin is the SI base unit for thermodynamic temperature, anchored at absolute zero. Since the 2019 SI revision, it is defined via the Boltzmann constant for reproducible measurements.
Celsius (°C)
Celsius is offset from Kelvin by exactly 273.15: 0°C = 273.15 K. It’s widely used in daily life (weather, cooking) while remaining consistent with scientific definitions.
Fahrenheit (°F)
Fahrenheit is commonly used in the United States. Conversions require both a scale factor and an offset (32) when moving between Celsius/Kelvin.
Rankine (°R)
Rankine is an absolute scale like Kelvin, but it uses Fahrenheit-sized degrees. It appears in some engineering contexts when working with US customary units.

Fórmula de conversão de temperatura

From Celsius

A Fahrenheit

°F = (°C × 9/5) + 32

A Kelvin

K = (°C + 273.15)

Para Rankin

°R = (°C + 273.15) × 9/5

De Fahrenheit

A Celsius

°C = (°F - 32) × 5/9

A Kelvin

K = (°F - 32) × 5/9 + 273.15

Para Rankin

°R = °F + 459.67

Pro tip: For temperature differences (ΔT), don’t apply offsets. Use only the scale factor (Δ°F = Δ°C × 9/5).

How to Use This Temperature Conversion Table: A Step-by-Step Guide

How to Convert Celsius to Fahrenheit Without Calculator

Quick Mental Math Method

  1. Double the Celsius value
  2. Add 30
  3. Adjust slightly (this gives you ±2°F accuracy)

Example: 20°C → (20 × 2) + 30 = 70°F (actual: 68°F)

How to Read the Oven Temperature Conversion Chart

When following international recipes, look up your recipe’s temperature in the °C column, then read the equivalent °F value in the same row.

  • Round to the nearest 25°F increment for oven dials (most ovens adjust in 25° steps).
  • Use the table as a quick reference temperature chart next to your oven.
Common baking conversions
  • 180°C = 350°F (standard baking)
  • 200°C = 400°F (roasting)
  • 220°C = 425°F (high heat)

How to Use Kelvin for Scientific Calculations

When to use Kelvin instead of Celsius

  • Thermodynamic equations (PV=nRT)
  • Material science calculations
  • Absolute temperature measurements
  • Preventing negative temperature issues

Quick conversion: K = °C + 273.15

Real-World Temperature Conversion Examples: From Kitchen to Laboratory

Perfecting International Baking Recipes

A baker in California follows a French macaron recipe listing 150°C.
Solution process
  1. Used conversion formula: (150 × 9/5) + 32 = 302°F
  2. Rounded to nearest oven increment: 300°F
  3. Adjusted baking time by monitoring texture
Result: Perfect macarons with consistent texture.
Key takeaway: Always round oven temperatures to your dial’s increments (usually 25°F).

Weather Forecast Translation for Travelers

An American traveler sees “32°C” in a Rome weather forecast.
Quick mental conversion
  1. 32 × 2 = 64
  2. 64 + 30 = 94°F
  3. Actual: 89.6°F (close enough for packing)
Result: Packed light, breathable clothing for hot weather.
Key takeaway: Mental math is great for travel decisions; use the exact formula when precision matters.

Laboratory Temperature Calibration

A research lab needs to convert room temperature logs from Fahrenheit to Kelvin for publication.
Process
  1. Room temp: 72°F
  2. Convert to Celsius: (72 − 32) × 5/9 = 22.2°C
  3. Convert to Kelvin: 22.2 + 273.15 = 295.35 K
Result: Data standardized for an international journal submission.
Key takeaway: Use Kelvin for scientific reporting to match SI standards and avoid negative temperatures.

Casos de uso para conversão de temperatura

Cozinhar & Cozimento

Converta a temperatura do forno entre Celsius e Fahrenheit de acordo com receitas internacionais. Essencial para técnicas precisas de cozimento e cozimento.

Tempo e clima

Conheça a previsão do tempo ao viajar internacionalmente. Converta relatórios meteorológicos e dados climáticos entre Celsius e Fahrenheit.

Pesquisa científica

Converta experimentos de laboratório, propriedades de materiais e temperaturas cientificamente calculadas usando Kelvin e outras escalas absolutas.

Aplicações industriais

Monitoramento de temperatura de equipamentos, controle de processo e sistemas de segurança em ambientes industriais e de fabricação.

🎮

Test Your Skills

Challenge yourself with our interactive conversion game!

👇 Select a difficulty level to start!

Fun Facts

❄️

Water Freezes

0°C = 32°F = 273.15 K

🌡️

Body Temperature

37°C = 98.6°F = 310.15 K

💧

Water Boils

100°C = 212°F = 373.15 K

🌞

Sun Surface

5,778 K = 5,505°C = 9,941°F

❓Perguntas frequentes sobre a conversão de temperatura

Qual é a diferença entre Celsius e Kelvin?

O Kelvin é uma escala de temperatura absoluta que começa no zero absoluto (-273,15 °C). Conversão: K = °C + 273,15. O Kelvin é usado em cálculos científicos que requerem uma temperatura absoluta.

Por que -40°C é igual a -40°F?

Este é o ponto em que Celsius e Fahrenheit se encontram. Quando °C e °F são iguais a -40, a fórmula (°C × 9/5) + 32 = °F dá o mesmo resultado.

O que é a escala de temperatura de Rankine?

Rankine é uma escala de temperatura absoluta que usa o grau Fahrenheit, mas começa a partir do zero absoluto (0 R = -459,67 F). É usado principalmente para aplicações de engenharia nos Estados Unidos.

Ferramentas de conversão relacionadas

Conversor de temperatura
Conversor de temperatura interativo com cálculo instantâneo
Tabela de conversão de comprimento
Converter entre medições de comprimento e distância
Tabela de conversão de energia
Converter entre medições de energia e calor