Have you ever wondered how to change measurements from one system to another? For example, if you’re working on your garden and you come across a measurement of 90 millimeters (mm), you might want to know how that looks in inches. It’s important because different tools and materials can use different units of measurement.
To convert millimeters to inches, you can use a special formula. One inch is equal to 25.4 millimeters. So, to convert 90 mm to inches, you can use this equation:
$$
\text{inches} = \frac{\text{millimeters}}{25.4}
$$
If we put in our number, it looks like this:
$$
\text{inches} = \frac{90}{25.4} \approx 3.54
$$
So, 90 mm is roughly 3.54 inches!
Knowing how to convert measurements can help you when you’re planting seeds, building garden boxes, or when you’re buying the right size mulch to spread over your garden bed.
Here are 7 objects that are exactly equal to 90 mm:
- A small tomato (like a cherry tomato)
- The diameter of a typical lemon
- A golf ball
- A standard-sized pine cone
- A short pencil
- A medium-sized mushroom
- The height of a soda can lid
Now you can picture what 90 mm looks like while getting ready for your gardening projects!
