CALCULATORS / UNITS AND DIMENSIONAL REASONING

Celsius to kelvin and temperature rise calculator

Absolute temperature conversion; differences remain kelvin.

units-temperature.napkin / editable

SCENARIO COMPARISON

Compare the numbers.

This source describes an analytical model. Its quantities and checks are the view.

Scenario	kelvinK	heateddegC
	298.15	35
	293.15	30

All calculated quantities are listed with the inputs. Switch to Source to inspect the equations.

SCENARIOS / CALCULATED VALUESSAME SOURCE

Change an input to see the consequences.

temperature budget35.00 degC✓ passes

BASELINE INPUTS

temperature25 degCrise10 K

CALCULATED

kelvin298.15 K

heated35 degC

Edits change the baseline source.

THE SOURCE

Edits below update the same model.

# Temperature and temperature-difference conversion
# Scope: Absolute temperature conversion; differences remain kelvin.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

temperature = 25 degC
rise = 10 K

kelvin := temperature [K]
heated := temperature + rise [degC]

check temperature budget: heated <= 50 degC

scenario alternative: temperature = 20 degC

Calculated from your source · not saved

Baseline · Baseline

temperature budget35.00 degC ✓ passes

alternative · alternative

temperature budget30.00 degC ✓ passes

Illustrative first-order example. Checks are editable requirements, not design standards. The broader topic may require additional equations, data, and validation.

Formula and units

This example uses the following equations. Input names and units match the editable source above.

kelvin: kelvin = temperature [K]
heated: heated = temperature + rise [degC]

Original worked example

These are the baseline values in the downloadable source. Edits above let you test your own values.

Given

temperature: 25 degC
rise: 10 K

Calculated

kelvin: 298.15 K
heated: 35 degC

Assumptions and limits

Absolute temperature conversion; differences remain kelvin.

The requirement checks use the limits written in this example. Passing a check does not establish that the model covers every load, material behavior, or operating condition in a real design.

Download this .napkin example ↓

Take it further with your agent

Napkin keeps the inputs, equations, checks and assumptions together in one study. Your agent sets it up; you change the numbers.

Try with Claude ↗

codex 'Use Napkin (https://napkin.engineering/mcp, or the local Napkin plugin) to build a study: Temperature and temperature-difference conversion. Inputs: temperature or interval; unit scale. Outputs: absolute temperature or interval. Model scope: Dimensional analysis and explicit reference conventions. Read napkin_capabilities and the current snapshot. Ask me for the values that matter, label assumptions with units, author .napkin source, validate it and apply it with napkin_source using the current revision, then open the study. Add checks for the limits I supply. Keep unsupported analyses explicit.'

Claude needs the Napkin connector; Codex needs the Napkin plugin. Set up your agent ↗

The broader study

The topic brief below describes the broader scope. The worked example above states the particular calculation it implements.

Inputs: temperature or interval, unit scale
Outputs: absolute temperature or interval
Modes: convert, solve-for
Drawing: Quantity diagram

EXECUTABLE WORKED EXAMPLE · FIRST-ORDER MODEL · CHECK THE SCOPE & ASSUMPTIONS