One kip is exactly 4,448,221.615 millinewtons, so converting kips to millinewtons is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
One thousandth of a newton — the range of surface tension and small actuators. One thousand pounds-force, the working unit of American structural engineering.
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 millinewtons so the number you get has something to be compared against.
The formula
kips- The amount you are converting, in kips
4,448,221.61526- The exact number of millinewtons in one kip
millinewtons- The converted result
How it works, step by step
- Enter the value in kips.
- It is multiplied by 4,448,221.61526, the exact factor between the two units.
- The answer is shown in millinewtons, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A car’s braking force: 1.8 kip in millinewtons
At 1.8 kip (a car’s braking force), the same quantity in millinewtons is 1.8 × 4.44822e+06 = 8.0068e+06 mN. One kip is 4.44822e+06 millinewtons, so the numbers grow as expected.
A climbing rope’s rated load: 4.95 kip in millinewtons
At 4.95 kip (a climbing rope’s rated load), the same quantity in millinewtons is 4.95 × 4.44822e+06 = 2.20187e+07 mN. One kip is 4.44822e+06 millinewtons, so the numbers grow as expected.
How to read your score
Frequently asked questions
How many millinewtons are in one kip?
Exactly 4,448,221.61526. 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 kips to millinewtons?
millinewtons = kips × 4,448,221.61526. Reversed, kips = millinewtons ÷ 4,448,221.61526, which is the same as multiplying by 2.248089431e-07.
Which is the bigger unit, the kip or the millinewton?
The kip. One kip equals 4.44822e+06 millinewtons.
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 kip?
One thousand pounds-force, the working unit of American structural engineering.
What is a millinewton?
One thousandth of a newton — the range of surface tension and small actuators.
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 kip to mN in my head?
Plenty of people do this in their head: multiply by 4400000.000000 instead of using the exact factor 4,448,221.615. At 100 that shortcut gives 440000000.000000 millinewtons, off by 4822161.526050 millinewtons or about 1.08%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Kips to millinewtons reference tables
| Kips | Millinewtons |
|---|---|
| 0.5 kip | 2.22411e+06 mN |
| 1 kip | 4.44822e+06 mN |
| 2 kip | 8.89644e+06 mN |
| 3 kip | 1.33447e+07 mN |
| 5 kip | 2.22411e+07 mN |
| 10 kip | 4.44822e+07 mN |
| 20 kip | 8.89644e+07 mN |
| 25 kip | 1.11206e+08 mN |
| 50 kip | 2.22411e+08 mN |
| 75 kip | 3.33617e+08 mN |
| 100 kip | 4.44822e+08 mN |
| 250 kip | 1.11206e+09 mN |
| 500 kip | 2.22411e+09 mN |
| 1000 kip | 4.44822e+09 mN |
| 5000 kip | 2.22411e+10 mN |
Exact factor: 1 kip = 4,448,221.61526 millinewtons.
| Quantity | kip | mN |
|---|---|---|
| A sheet of paper’s weight | 1.102e-05 kip | 49 mN |
| Lifting a bag of sugar | 0.002205 kip | 9810 mN |
| A firm handshake | 0.06744 kip | 3e+05 mN |
| An adult’s body weight | 0.1754 kip | 7.8e+05 mN |
| A climbing rope’s rated load | 4.946 kip | 2.2e+07 mN |
| A car’s braking force | 1.798 kip | 8e+06 mN |
Published reference values, converted with the same factor this page uses.