To convert ounces-force to grams-force, multiply by 28.34952312. That factor is the whole relationship: both units measure force, so the conversion is a proportion with no offset and no substance-specific constant.
Used for small springs, switches and haptic actuators. The weight of one gram at standard gravity, used for keyboard switches, sutures and fibre testing.
Mass is not force. A kilogram is a mass; a kilogram-force is the weight of that mass at standard gravity, 9.80665 N. Bathroom scales blur the distinction because they are calibrated for Earth; engineering calculations cannot. Below the calculator there is a step table for the values people look up most, and a second table putting real force figures into grams-force so the number you get has something to be compared against.
The formula
ounces-force- The amount you are converting, in ounces-force
28.349523125- The exact number of grams-force in one ounce-force
grams-force- The converted result
How it works, step by step
- Enter the value in ounces-force.
- It is multiplied by 28.349523125, the exact factor between the two units.
- The answer is shown in grams-force, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A sheet of paper’s weight: 0.176 ozf in grams-force
Take a sheet of paper’s weight, roughly 0.176 ozf. The conversion is a single multiplication — 0.176 × 28.3495 — giving 4.98952 gf. Because the relationship is proportional, doubling the input doubles the answer to 9.97903 gf.
A firm handshake: 1080 ozf in grams-force
Take a firm handshake, roughly 1080 ozf. The conversion is a single multiplication — 1080 × 28.3495 — giving 30,617.5 gf. Because the relationship is proportional, doubling the input doubles the answer to 61,235 gf.
How to read your score
Frequently asked questions
How many grams-force are in one ounce-force?
Exactly 28.349523125. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert ounces-force to grams-force?
grams-force = ounces-force × 28.349523125. Reversed, ounces-force = grams-force ÷ 28.349523125, which is the same as multiplying by 0.0352739619496.
Which is the bigger unit, the ounce-force or the gram-force?
The ounce-force. One ounce-force equals 28.3495 grams-force.
What does this quantity actually measure?
Both units measure force. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a ounce-force?
Used for small springs, switches and haptic actuators.
What is a gram-force?
The weight of one gram at standard gravity, used for keyboard switches, sutures and fibre testing.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do ozf to gf in my head?
Plenty of people do this in their head: multiply by 28 instead of using the exact factor 28.34952312. At 100 that shortcut gives 2800 grams-force, off by 34.95 grams-force or about 1.23%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Ounces-Force to grams-force reference tables
| Ounces-Force | Grams-Force |
|---|---|
| 0.5 ozf | 14.1748 gf |
| 1 ozf | 28.3495 gf |
| 2 ozf | 56.699 gf |
| 3 ozf | 85.0486 gf |
| 5 ozf | 141.748 gf |
| 10 ozf | 283.495 gf |
| 20 ozf | 566.99 gf |
| 25 ozf | 708.738 gf |
| 50 ozf | 1417.48 gf |
| 75 ozf | 2126.21 gf |
| 100 ozf | 2834.95 gf |
| 250 ozf | 7087.38 gf |
| 500 ozf | 14,174.8 gf |
| 1000 ozf | 28,349.5 gf |
| 5000 ozf | 141,748 gf |
Exact factor: 1 ounce-force = 28.349523125 grams-force.
| Quantity | ozf | gf |
|---|---|---|
| A sheet of paper’s weight | 0.1763 ozf | 4.997 gf |
| Lifting a bag of sugar | 35.29 ozf | 1000 gf |
| A firm handshake | 1079 ozf | 3.059e+04 gf |
| An adult’s body weight | 2806 ozf | 7.954e+04 gf |
| A climbing rope’s rated load | 7.913e+04 ozf | 2.243e+06 gf |
| A car’s braking force | 2.878e+04 ozf | 8.158e+05 gf |
Published reference values, converted with the same factor this page uses.