TRT

Unit Converters

Torque Reference Table Calculator

Generate a compounded torque reference table with N·m, lb-ft, lb-in, kgf·m, lever force, efficiency-adjusted torque, and fastener-count references.

Base torque (N m)Increment per row (%)Reference rowsLever arm length (m)Transmission efficiency (%)Fastener countEntered torque comparison

Base torque in lb-ft-

Base torque in lb-in-

Base torque in kgf-m-

Force at entered lever arm-

Torque after entered efficiency-

Base torque times fastener count-

Torque at final reference row-

Base torque minus entered comparison-

Decision view

Compounded torque step curve and conversion rails

Compounded torque step curve and conversion railsEach reference row compounds torque while unit and lever-force relationships remain explicit.

Exact scenario comparisonIncrement per row (%) changes while all other entered assumptions remain constant.

Increment per row (%)	Base torque in lb-ft	Base torque in lb-in	Base torque in kgf-m	Force at entered lever arm	Torque after entered efficiency	Base torque times fastener count	Torque at final reference row	Base torque minus entered comparison

Period-by-period detail

Torque conversion reference table

Each row compounds the entered torque step and recalculates every unit and lever-force reference.

How to use Torque Reference Table Calculator

Enter base torque and percentage increment.
Choose the number of reference rows.
Enter lever arm, efficiency, fastener count, and comparison torque.
Read the stepped curve and unit-conversion table.

Calculator guide

Understanding Torque Reference Table Calculator

A torque reference table should preserve one physical quantity while converting units and showing how a geometric row increment changes lever force and effective transmitted torque.

One physical quantity Units convert the same torque.

Rows compound The increment is multiplicative.

Force uses arm length Shorter arms need more force.

Specifications govern The table is a reference.

Calculation method

How the calculation works

Generate a geometric torque reference table from one base value while displaying exact SI, imperial, lever-force, efficiency, and fastener-count references. Compound the base torque by the entered percentage for each row, then convert every row from N·m using fixed unit factors and divide by lever arm for force.

Detailed calculation process

Generate and convert a compounded torque reference series

The default starts at 120 N·m, increases 10% per row for nine rows, uses a 0.4 m lever arm, 92% efficiency, eight fasteners, and a 150 N·m comparison.

General formula: T_j = T_0(1+s)^(j-1)T_ft = 0.737562149TT_in = 8.85074579TT_kg = 0.101971621TF = T/LT_e = TetaT_N = NT_0 The table compounds torque rather than adding a fixed amount. Unit conversions preserve torque, lever force divides by arm length, and efficiency applies only to the transmitted-torque reference.

What each symbol means

T_0, T_j Base and row torque (N·m).

s, j Row increment share and row index.

T_ft, T_in Torque in lb-ft and lb-in.

T_kg Torque in kgf·m.

L, F Lever arm (m) and perpendicular force (N).

eta, T_e Efficiency share and effective torque (N·m).

N, T_N Fastener count and total nominal reference.

Worked substitution with the default inputs

1. Convert the base torque 120 N·m = 88.5075 lb-ft = 1,062.0895 lb-in = 12.2366 kgf·m All values represent the same base torque in different units.

2. Calculate lever force F = 120/0.4 = 300 N The formula assumes perpendicular force at the entered arm length.

3. Apply efficiency T_e = 120×92% = 110.4 N·m Efficiency-adjusted torque is kept separate from the specified base torque.

4. Scale the fastener reference T_N = 8×120 = 960 N·m This is an arithmetic sum, not a tightening sequence or system energy.

5. Calculate the final row and comparison T_9 = 120(1.10)^8 = 257.2307 N·m120-150 = -30 N·m Eight compounding intervals separate row one from row nine.

The nine-row default series rises geometrically from 120 to 257.231 N·m while preserving exact conversion and lever-force relationships.

Engineering reference

See torque grow by row and translate into force

A step curve shows compounded N·m values, while aligned rails show lb-ft conversion and force at the entered lever arm.

Step curve Geometric row progression.

Unit rail N·m to lb-ft.

Force rail Torque divided by arm.

Comparison Entered torque marker.

Worked situations

Practical examples

120 N·m equals about 88.51 lb-ft.
A 0.4 m lever needs 300 N of perpendicular force.
Nine 10% rows end at about 257.23 N·m.

Better inputs

Useful tips

Use manufacturer specifications as the controlling source.
Keep unit conversions distinct from adapter corrections.
Apply force perpendicular to the lever-arm model.

Before relying on the result

Limitations and common mistakes

Joint condition, lubrication, thread pitch, tool calibration, sequence, and engineering requirements are excluded.
Fastener-count total is only an arithmetic reference.
Compounded rows are a reference series, not a tightening prescription.

Reference

Key terms

Torque: Turning moment equal to perpendicular force times lever arm.
Geometric step: Each row multiplies the prior row by one plus the step share.
Effective torque: Base torque times entered efficiency.

Important note

Calculated directly from the entered values using the displayed formula and rounding settings.

Frequently asked questions

Why is row nine not 120 plus eight times 12?

Each row increases the previous row by 10%, so the series compounds.

Does unit conversion change torque?

No. It changes only the numeric unit representation.

Does eight fasteners require 960 N·m at once?

No. That result is only the sum of eight nominal references.

Can this replace a torque specification?

No. Use the governing engineering or manufacturer specification.