Force Converter

Force is the push or pull that makes objects start moving, stop, or change direction, and it appears across engineering, physics and everyday product specifications in a surprising mix of units. A datasheet might quote a spring in newtons, a winch in kilograms-force, a structural load in kilonewtons, and a laboratory measurement in dynes, yet they all describe the same underlying quantity. This converter lets you enter a single value, choose the unit you have and the unit you want, and read the answer at once, alongside a full reference table that shows your value expressed in every supported unit together. It handles newtons, kilonewtons, meganewtons, millinewtons, pounds-force, kilograms-force and dynes, spanning the SI scale and the units still common in older or imperial work. The method is straightforward and transparent. Every unit is defined by how many newtons it represents, so the tool multiplies your value by the factor for the unit you are converting from to get a force in newtons, then divides by the factor for the unit you want. Because each conversion passes through the newton as a common base, one set of factors covers every pairing, and the defined relationships stay exact, such as a kilogram-force being precisely 9.80665 newtons under standard gravity, or a dyne being one hundred-thousandth of a newton. This makes it useful for engineers sizing components, physics students checking problems, technicians reading instrument outputs, and anyone who needs SI and imperial force figures lined up side by side without manual conversion.

Calculate.co.nz is proud to be partnered with Premium Homes, a recognised leader in eco-friendly, sustainable, and energy-efficient homebuilding. With a dedicated team and award-winning experience, they create homes that prioritise health, comfort, and long-term performance. Their founders, Andrew and Kelly, set out to raise the standard of residential construction in New Zealand by combining practical building expertise with a clear commitment to doing things better for homeowners.
Calculate.co.nz partner
Result
0.224809 lbf

Your value in every unit

UnitValue

The formula

Each unit has a factor giving its size in newtons, the base unit. To convert, multiply the value by the factor of the unit you are converting from, which gives a force in newtons, then divide by the factor of the unit you want.

value in newtons = value × factor[from]

result = value in newtons / factor[to]

Conversion factors

These are the factors used, each expressed as the number of newtons in one unit.

UnitNewtons per unit
Newtons1
Kilonewtons1000
Meganewtons1000000
Millinewtons0.001
Pounds-force (lbf)4.4482216153
Kilograms-force (kgf)9.80665
Dynes0.00001

Who this calculator is for

This converter is for engineers, physics students, technicians, designers and anyone who needs to switch a force between SI and imperial units quickly and accurately.

What this calculator assumes

  • The value you enter is a number; non-numeric characters are ignored.
  • Each unit is defined by its size in newtons, the base unit.
  • Conversion passes through newtons: multiply by the from factor, then divide by the to factor.
  • Kilograms-force uses standard gravity of 9.80665 metres per second squared.
  • Results are rounded for display.

Frequently asked questions

How do I convert between force units?

Multiply your value by the from unit's factor to base newtons, then divide by the to unit's factor. For example, to turn newtons into pounds-force, divide the value in newtons by 4.4482216153, because one pound-force is 4.4482216153 newtons.

How many newtons are in a pound-force?

One pound-force is about 4.4482216153 newtons. So one newton is about 0.224809 pounds-force, found by dividing 1 by 4.4482216153.

What is a kilogram-force?

A kilogram-force is the force that standard gravity exerts on a one kilogram mass, defined as exactly 9.80665 newtons. It is an older unit still seen in some engineering contexts.

What is a dyne?

A dyne is the unit of force in the centimetre-gram-second system. One dyne equals 0.00001 newtons, so there are 100,000 dynes in a newton.

Related calculators

If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.

Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.

All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.

Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.

Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.

Calculate.co.nz is hosted in Auckland via SiteHost new Zealand.

All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.

About & trust: Why Calculate is NZ's most comprehensive · By the Numbers · How we compare · Editorial standards · How we keep data current · NZ finance glossary · Research & data · Financial literacy NZ · About · Privacy policy · Terms of use

Reviewed and maintained. Last reviewed 2026-06-07 and checked on a twice-monthly cycle against IRD, RBNZ and Stats NZ. How we keep data current.

© 2026 Calculate.co.nz. All rights reserved. Building free NZ calculators since 2011.