UnitsConverter

Ounce-force to UK Ton-force Converter

Convert ounces-force to UK tons-force with our free online force converter.

Quick Answer

1 Ounce-force = 0.0000279 UK tons-force

Formula: Ounce-force Ɨ conversion factor = UK Ton-force

Use the calculator below for instant, accurate conversions.

Our Accuracy Guarantee

All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.

Last verified: December 2025Reviewed by: Sam Mathew, Software Engineer

Ounce-force to UK Ton-force Calculator

How to Use the Ounce-force to UK Ton-force Calculator:

  1. Enter the value you want to convert in the 'From' field (Ounce-force).
  2. The converted value in UK Ton-force will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Force category.
  4. Click the swap button (ā‡Œ) to reverse the conversion direction.
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How to Convert Ounce-force to UK Ton-force: Step-by-Step Guide

Converting Ounce-force to UK Ton-force involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

LTf = ozf Ɨ 0.0000279018

Example Calculation:

1 ozf = 0.0000279 LTf

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

Need to convert to other force units?

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šŸ“‹ Unit Symbols

Copy ozf & LTf symbols

What is a Ounce-force and a UK Ton-force?

Ounce-force (ozf) is the force exerted by one avoirdupois ounce of mass under standard gravity (32.174 ft/sĀ²).

Formula: 1 ozf = 1 oz Ɨ 32.174 ft/sĀ²

Conversions:

  • 1 ozf = 0.278014 N (newtons)
  • 1 ozf = 0.0625 lbf (1/16 pound-force)
  • 1 ozf = 28.35 gf (gram-force)
  • 1 ozf = 0.02835 kgf (kilogram-force)
  • 1 ozf = 278,014 dynes
  • 16 ozf = 1 lbf

UK ton-force (long ton-force) is the force exerted by one long ton (2,240 pounds) under standard gravity.

Formula: 1 LTf = 2,240 lbf

Conversions:

  • 1 LTf = 9,964.02 N (newtons)
  • 1 LTf = 9.96402 kN (kilonewtons)
  • 1 LTf = 2,240 lbf (pounds-force)
  • 1 LTf = 1,016.05 kgf (kilogram-force)
  • 1 LTf = 1.01605 metric ton-force
  • 1 LTf = 1.12 US ton-force (short ton-force)

Note: The Ounce-force is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The UK Ton-force belongs to the imperial/US customary system.

History of the Ounce-force and UK Ton-force

Ounce-force derives from the avoirdupois ounce, part of the imperial system developed in medieval England for commerce. The ounce (1/16 of a pound) was standardized for general goods, distinguishing it from the troy ounce used for precious metals. As a force unit, ounce-force became common in applications requiring finer precision than pounds, such as pharmacy scales, postal scales, and small mechanical springs. While metric units have largely replaced ozf in scientific and international contexts, it persists in US consumer products, food packaging, fishing equipment, and some mechanical specifications.

The UK ton-force is based on the long ton, part of the British imperial system. The long ton of 2,240 pounds (20 hundredweight of 112 pounds each) was the standard ton in the United Kingdom and Commonwealth countries for centuries. It was used extensively in British engineering, particularly in shipping (where "displacement tonnage" used long tons), structural engineering, and heavy industry. When the UK began metrication in 1965, the long ton was gradually replaced by the metric tonne (1,000 kg), though legacy equipment, old drawings, and historical documents still reference long ton-force. The unit persists in some traditional industries and historical contexts.

Common Uses and Applications: ounces-force vs UK tons-force

Explore the typical applications for both Ounce-force (imperial/US) and UK Ton-force (imperial/US) to understand their common contexts.

Common Uses for ounces-force

Consumer Products: Package weight labels, kitchen scales, postal scales.

Fishing Equipment: Fishing line test strength, lure weights, rod action ratings.

Food Industry: Portion control, ingredient measurements, packaging specifications.

Small Springs: Tension spring ratings, retractable mechanisms, small mechanical devices.

Precision Scales: Laboratory balances, jewelry scales, pharmacy measurements.

When to Use UK tons-force

Historical British Engineering: Pre-1970s structural calculations and specifications.

Shipping Industry: Older ship displacement measurements, cargo capacity.

Legacy Equipment: Crane ratings, press capacity from British manufacturers.

Commonwealth Countries: Historical engineering documents in former British territories.

Archival Research: Understanding older technical drawings and specifications.

Additional Unit Information

About Ounce-force (ozf)

How do I convert ounce-force to newtons?

Formula: N = ozf Ɨ 0.278014

Examples:

  • 1 ozf = 0.278 N
  • 4 ozf = 1.11 N
  • 16 ozf = 4.45 N
  • 32 ozf = 8.90 N

Quick approximation: Multiply by 0.28 for rough conversion.

Ounce-force to Newtons converter ā†’

How many ounce-force equal one pound-force?

1 pound-force = 16 ounce-force

Quick conversions:

  • 0.25 lbf = 4 ozf
  • 0.5 lbf = 8 ozf
  • 1 lbf = 16 ozf
  • 2 lbf = 32 ozf

Reverse: 1 ozf = 0.0625 lbf (1/16 of a pound-force)

Pounds-force to Ounce-force converter ā†’

What is the difference between ounce and ounce-force?

Ounce (oz): Unit of MASS - measures amount of matter.

Ounce-force (ozf): Unit of FORCE - measures weight or push/pull.

Relationship: On Earth at standard gravity, 1 ounce of mass exerts 1 ounce-force.

Important distinction: In space (zero gravity), a 1-ounce mass still has 1 ounce of mass but exerts 0 ounce-force. On the Moon, it would exert ~0.17 ozf due to lower gravity.

Note: In everyday US usage, "ounce" typically refers to weight (force), but in physics and engineering, the distinction matters.

What is a troy ounce-force?

Troy ounce-force is based on the troy ounce (31.1 grams), used for precious metals:

  • 1 troy ozf = 0.305 N
  • 1 troy ozf = 1.097 avoirdupois ozf
  • 1 troy ozf = 31.1 gf

Avoirdupois ounce-force (standard ozf) is based on the avoirdupois ounce (28.35 grams), used for general goods.

Most force applications use avoirdupois ounce-force unless specifically dealing with precious metals or pharmacy.

Convert ounce-force to other force units ā†’

About UK Ton-force (LTf)

How do I convert UK ton-force to kilonewtons?

Formula: kN = LTf Ɨ 9.96402 (approximately LTf Ɨ 10)

Examples:

  • 1 LTf = 9.96 kN
  • 5 LTf = 49.8 kN
  • 10 LTf = 99.6 kN
  • 100 LTf = 996 kN

Quick approximation: Multiply by 10 for rough conversion.

UK Ton-force to Kilonewtons converter ā†’

What is the difference between UK and US ton-force?

UK ton-force (long ton-force):

  • Based on 2,240 pounds
  • 1 LTf = 9.964 kN = 1.016 metric tf
  • Used in British Commonwealth

US ton-force (short ton-force):

  • Based on 2,000 pounds
  • 1 US tonf = 8.896 kN = 0.907 metric tf
  • Used in United States

Conversion: 1 UK ton-force = 1.12 US ton-force

The 12% difference causes confusion in international specifications. Always clarify "long ton" or "short ton" to avoid errors.

US Ton-force to UK Ton-force converter ā†’

How do UK ton-force and metric ton-force compare?

1 UK ton-force = 1.01605 metric ton-force

They are very close (only ~1.6% difference):

  • 1 long ton = 2,240 lb = 1,016 kg
  • 1 metric ton = 1,000 kg = 2,205 lb

Quick conversions:

  • 1 LTf ā‰ˆ 1.016 tf (metric)
  • 10 LTf ā‰ˆ 10.16 tf
  • 100 LTf ā‰ˆ 101.6 tf

Practical note: For rough estimates, UK and metric ton-force are nearly equal, but always use precise conversions for engineering calculations.

Metric Ton-force to UK Ton-force converter ā†’

Why did the UK stop using long ton-force?

Metrication: UK adopted SI units starting in 1965, gradually phasing out imperial units.

International trade: Metric system became global standard for commerce and engineering.

Confusion reduction: Multiple ton definitions (long, short, metric) created errors.

EU alignment: European Union used metric system exclusively.

Modern practice: Engineering now uses kilonewtons (kN) and metric tonnes.

Legacy persistence: Still appears in old ships, historical documents, and traditional industries.

Today, use kilonewtons for force or metric tonnes for mass in UK engineering.

Convert UK ton-force to other force units ā†’

Conversion Table: Ounce-force to UK Ton-force

Ounce-force (ozf)UK Ton-force (LTf)
0.50
10
1.50
20
50
100
250.001
500.001
1000.003
2500.007
5000.014
1,0000.028

People Also Ask

How do I convert Ounce-force to UK Ton-force?

To convert Ounce-force to UK Ton-force, enter the value in Ounce-force in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our force converter page to convert between other units in this category.

Learn more ā†’

What is the conversion factor from Ounce-force to UK Ton-force?

The conversion factor depends on the specific relationship between Ounce-force and UK Ton-force. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.

Can I convert UK Ton-force back to Ounce-force?

Yes! You can easily convert UK Ton-force back to Ounce-force by using the swap button (ā‡Œ) in the calculator above, or by visiting our UK Ton-force to Ounce-force converter page. You can also explore other force conversions on our category page.

Learn more ā†’

What are common uses for Ounce-force and UK Ton-force?

Ounce-force and UK Ton-force are both standard units used in force measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our force converter for more conversion options.

For more force conversion questions, visit our FAQ page or explore our conversion guides.

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šŸ“š How to Convert Units

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šŸ”¢ Conversion Formulas

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āš–ļø Metric vs Imperial

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āš ļø Common Mistakes

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Other Force Units and Conversions

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Verified Against Authority Standards

All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.

NIST Reference on Constants, Units and Uncertainty

National Institute of Standards and Technology ā€” Fundamental physical constants and unit conversions

BIPM SI Units

Bureau International des Poids et Mesures ā€” International System of Units (SI) definitions and standards

ISO 80000

International Organization for Standardization ā€” Quantities and units international standards series

Last verified: December 3, 2025