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Convert Pounds per Inch to Kilograms per Meter

Instantly convert Pounds per Inch (lb/in) to Kilograms per Meter (kg/m) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: lb/in to kg/mmultiply by 17.858

Reference Table

Pounds per Inch (lb/in)Kilograms per Meter (kg/m)
117.858
589.29
10178.58
25446.45
50892.9
1001785.8

How to Convert Pounds per Inch to Kilograms per Meter

Formula

To convert Pounds per Inch (lb/in) to Kilograms per Meter (kg/m): multiply by 17.858

Step-by-Step

  1. Start with your value in Pounds per Inch (lb/in).
  2. Multiply by 17.858 to perform the conversion.
  3. The result is your value expressed in Kilograms per Meter (kg/m).

Conversion Factor

1 lb/in = 17.858 kg/m

Reverse Factor

1 kg/m = 0.0559973 lb/in

Worked Example

Convert 25 Pounds per Inch to Kilograms per Meter: 25 lb/in = 446.45 kg/m

About Pound per Inch (lb/in)

An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17.858 kg/m per NIST SP 811). lb/in is used occasionally in US engineering for small-cross-section components where lb/ft would produce small decimal values: small US-manufactured precision-machined wire (round bar stock from McMaster-Carr / MSC Industrial Supply lists weight-per-inch for small diameters), specialty tooling (broaches, taps, drills, gun-barrel stock), small structural sections in MIL-SPEC aerospace and defense applications (MIL-STD-1539 microelectronics-package mass-spec sheets, occasional small-airframe spar-cap weight-per-inch in legacy aircraft drawings), and some pre-1980s machine-shop reference tables. 1 lb/in = 12 lb/ft ≈ 17.86 kg/m. Much less common than lb/ft in everyday US structural engineering but persists in specialty tooling, fastener-stock, and small-arms ammunition projectile-weight specifications.

About Kilogram per Meter (kg/m)

The SI unit of linear density (mass per unit length) per ISO 80000-4. kg/m is the universal working unit for: structural-steel unit weights per Eurocode 3 + ArcelorMittal / British Steel / Tata Steel section catalogs (an IPE 200 wide-flange is 22.4 kg/m, IPE 400 66.3 kg/m, HEB 300 117 kg/m), heavy electrical and telecom cables (a 1,000 kcmil ACSR overhead transmission conductor is ~1.5 kg/m, a 230 kV underground HV cable 30-50 kg/m, fiber-optic submarine cable 6-12 kg/m armored), pipe weight per kg/m specifications per EN 10220 / API 5L / ASTM A53 (a 100 mm Schedule-40 steel pipe is 16.1 kg/m, 200 mm Sch-40 49.3 kg/m, 500 mm Sch-40 200+ kg/m), and rope / chain / wire-rope ratings per ISO 2408 (a 6×36 IWRC 32 mm diameter steel-wire-rope is 4.4 kg/m). Used in structural-engineering dead-load calculations, transportation cargo-loading, crane-and-rigging WLL determination, and material-takeoff estimating.

Quick Facts

  • 1 Pound per Inch equals 17.858 Kilograms per Meter
  • 1 Kilogram per Meter equals 0.0559973 Pounds per Inch
  • Pound per Inch is a unit of linear density
  • Kilogram per Meter is a unit of linear density
  • This conversion is commonly used in textile manufacturing, cable engineering, and structural analysis
  • The Pound per Inch belongs to the imperial system
  • The Kilogram per Meter belongs to the metric system

Common Pound per Inch to Kilogram per Meter Conversions

Pounds per Inch (lb/in)Kilograms per Meter (kg/m)
0.010.17858
0.11.7858
0.254.4645
0.58.929
117.858
235.716
353.574
589.29
10178.58
15267.87
20357.16
25446.45
50892.9
751339.35
1001785.8
2504464.5
5008929
100017858
500089290
10000178580

Understanding Pounds per Inch

The Pound per Inch (symbol: lb/in) is a unit of linear density. An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17.858 kg/m per NIST SP 811). lb/in is used occasionally in US engineering for small-cross-section components where lb/ft would produce small decimal values: small US-manufactured precision-machined wire (round bar stock from McMaster-Carr / MSC Industrial Supply lists weight-per-inch for small diameters), specialty tooling (broaches, taps, drills, gun-barrel stock), small structural sections in MIL-SPEC aerospace and defense applications (MIL-STD-1539 microelectronics-package mass-spec sheets, occasional small-airframe spar-cap weight-per-inch in legacy aircraft drawings), and some pre-1980s machine-shop reference tables. 1 lb/in = 12 lb/ft ≈ 17.86 kg/m. Much less common than lb/ft in everyday US structural engineering but persists in specialty tooling, fastener-stock, and small-arms ammunition projectile-weight specifications.

It belongs to the imperial measurement system.

Pounds per Inch are commonly used in textile manufacturing, cable engineering, and structural analysis.

Understanding Kilograms per Meter

The Kilogram per Meter (symbol: kg/m) is a unit of linear density. The SI unit of linear density (mass per unit length) per ISO 80000-4. kg/m is the universal working unit for: structural-steel unit weights per Eurocode 3 + ArcelorMittal / British Steel / Tata Steel section catalogs (an IPE 200 wide-flange is 22.4 kg/m, IPE 400 66.3 kg/m, HEB 300 117 kg/m), heavy electrical and telecom cables (a 1,000 kcmil ACSR overhead transmission conductor is ~1.5 kg/m, a 230 kV underground HV cable 30-50 kg/m, fiber-optic submarine cable 6-12 kg/m armored), pipe weight per kg/m specifications per EN 10220 / API 5L / ASTM A53 (a 100 mm Schedule-40 steel pipe is 16.1 kg/m, 200 mm Sch-40 49.3 kg/m, 500 mm Sch-40 200+ kg/m), and rope / chain / wire-rope ratings per ISO 2408 (a 6×36 IWRC 32 mm diameter steel-wire-rope is 4.4 kg/m). Used in structural-engineering dead-load calculations, transportation cargo-loading, crane-and-rigging WLL determination, and material-takeoff estimating.

It belongs to the metric measurement system.

Kilograms per Meter are commonly used in textile manufacturing, cable engineering, and structural analysis.

Why Convert Pounds per Inch to Kilograms per Meter?

Converting between Pounds per Inch and Kilograms per Meter is a frequent requirement for engineers, scientists, and students working with linear density values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate linear density conversion is essential.

Frequently Asked Questions

How do I convert Pounds per Inch to Kilograms per Meter?

An imperial linear-density unit equal to exactly 12 × lb/ft (≈ 17. To convert Pounds per Inch to Kilograms per Meter, multiply by 17.858. For example, 25 lb/in equals 446.45 kg/m.

How many Kilograms per Meter are in 1 Pound per Inch?

There are 17.858 Kilograms per Meter in 1 Pound per Inch.

How many Pounds per Inch are in 1 Kilogram per Meter?

There are 0.0559973 Pounds per Inch in 1 Kilogram per Meter.

What is the formula for Pound per Inch to Kilogram per Meter conversion?

The formula is: multiply by 17.858. This means 1 lb/in = 17.858 kg/m.

Is a Pound per Inch bigger than a Kilogram per Meter?

No. One Pound per Inch is smaller than one Kilogram per Meter because 1 lb/in equals 17.858 kg/m, which is greater than 1.

When do you need to convert between Pounds per Inch and Kilograms per Meter?

The SI unit of linear density (mass per unit length) per ISO 80000-4. Pound per Inch and Kilogram per Meter are both linear density units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.

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