snaptools
⇄
Temperature Converter
⌃⏎ run · ⎋ clear · / focus input
All units
send result to
no matches
// about this tool

Temperature Converter Online

Updated 2026-07-09

Convert temperature between Celsius, Fahrenheit, and Kelvin online for free. Enter a value, choose the scales, and SnapTools shows the result instantly. Everything runs in your browser, so nothing you enter is uploaded.

Temperature is trickier than most conversions because each scale starts at a different zero — you have to add an offset, not just multiply by a factor. That is why 0 °C is 32 °F and 273.15 K. This converter handles the arithmetic for you in any direction, whether you are reading a foreign weather report, following a recipe, or working with absolute temperatures in Kelvin.

// how to use

  1. 1 Enter a temperature value in the input panel.
  2. 2 Choose the unit you're converting from and the unit you're converting to.
  3. 3 Read the converted value on the right, then copy it.

// examples

Celsius to Fahrenheit
Input
100 °C → °F
Output
212 °F
Fahrenheit to Celsius
Input
98.6 °F → °C
Output
37 °C
Celsius to Kelvin
Input
0 °C → K
Output
273.15 K

// common uses

Converting weather temperatures between Celsius and Fahrenheit Following recipes that use a different scale than your oven Scientific and engineering calculations involving Kelvin Checking body-temperature readings across scales

// faq

No. The conversion runs entirely in your browser, so nothing you enter leaves your machine.
Celsius, Fahrenheit, and Kelvin, with conversion in any direction between them.
Multiply by 9/5 and add 32. So 20 °C becomes 20 × 9/5 + 32 = 68 °F. This tool does it instantly, including the reverse.
Absolute zero is 0 K, which is −273.15 °C or −459.67 °F. Temperature is an affine scale, so unlike length or weight the conversions add an offset, not just a factor.
Conversions use full floating-point precision and are rounded for display, so they are accurate for everyday, scientific, and cooking use.

// related

Length Converter Weight Converter Volume Converter Speed Converter Number Base Converter

Use this via API

Get a free API key → 
curl -X POST https://snaptools.dev/api/v1/tools/temperature-converter \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"100 \u00b0C \u2192 \u00b0F"}'
Esc
↑↓ navigate ↵ open Esc close