CALCULATORS / UNITS AND DIMENSIONAL REASONING

Torque unit converter: N m, N mm and lbf in

Dimensional torque conversion.

units-torque-units.napkin / editable

SCENARIO COMPARISON

Compare the numbers.

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

Scenario	newtonMillimetresN*mm	poundIncheslbf*inch
	2000	17.7015
	1600	14.1612

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.

driver budget2.00 N*m✓ passes

BASELINE INPUTS

torque2 N*m

CALCULATED

newtonMillimetres2000 N*mm

poundInches17.701 lbf*inch

Edits change the baseline source.

THE SOURCE

Edits below update the same model.

# Torque conversion
# Scope: Dimensional torque conversion.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

torque = 2 N*m

newtonMillimetres := torque [N*mm]
poundInches := torque [lbf*inch]

check driver budget: torque <= 5 N*m

scenario alternative: torque = 1.6 N*m

Calculated from your source · not saved

Baseline · Baseline

driver budget2.00 N*m ✓ passes

alternative · alternative

driver budget1.60 N*m ✓ 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.

newton millimetres: newtonMillimetres = torque [N*mm]
pound inches: poundInches = torque [lbf*inch]

Original worked example

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

Given

torque: 2 N*m

Calculated

newton millimetres: 2000 N*mm
pound inches: 17.7015 lbf*inch

Assumptions and limits

Dimensional torque conversion.

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: Torque conversion. Inputs: torque; source units. Outputs: N m, N mm, lbf in or lbf ft. 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: torque, source units
Outputs: N m, N mm, lbf in or lbf ft
Modes: convert, solve-for
Drawing: Quantity diagram

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