This converter turns ounces-force into newtons instantly, using the exact factor 1 ounce-force = 0.278013851 newtons. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
Used for small springs, switches and haptic actuators. The SI unit: the force that accelerates one kilogram at one metre per second squared.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
ounces-force- The amount you are converting, measured in ounces-force
0.278013851- The exact number of newtons in one ounce-force
newtons- The converted result
How it works, step by step
- Enter the number of ounces-force you want to convert.
- The value is multiplied by 0.278013851, the exact conversion factor.
- The result is displayed in newtons, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 ounces-force
Multiply 5 by 0.27801385. That gives 1.3901 newtons. A quick sanity check: one ounce-force is smaller than one newton, so the number should get smaller — and it does.
Converting 72 ounces-force
72 × 0.27801385 = 20.017 newtons. Working backwards, 20.017 ÷ 0.27801385 returns 72 ounces-force, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many newtons are in one ounce-force?
Exactly 0.278013851. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert ounces-force to newtons?
Newtons = ounces-force × 0.278013851. To reverse it, divide instead: ounces-force = newtons ÷ 0.278013851, which is the same as multiplying by 3.59694309.
Is the ounce-force bigger than the newton?
No. One ounce-force is only 0.278014 of a newton, so the newton is the larger unit.
Why does my answer differ slightly from other ounce-force to newtons converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a ounce-force?
Used for small springs, switches and haptic actuators.
What is a newton?
The SI unit: the force that accelerates one kilogram at one metre per second squared.
Ounces-Force to newtons reference table
| Ounces-Force | Newtons |
|---|---|
| 0.5 ozf | 0.139007 N |
| 1 ozf | 0.278014 N |
| 2 ozf | 0.556028 N |
| 3 ozf | 0.834042 N |
| 5 ozf | 1.3901 N |
| 10 ozf | 2.7801 N |
| 15 ozf | 4.1702 N |
| 20 ozf | 5.5603 N |
| 25 ozf | 6.9503 N |
| 50 ozf | 13.9007 N |
| 75 ozf | 20.851 N |
| 100 ozf | 27.8014 N |
| 250 ozf | 69.5035 N |
| 500 ozf | 139.0069 N |
| 1000 ozf | 278.0139 N |
Exact factor: 1 ounce-force = 0.278013851 newtons. Values rounded for display.