# Weird Units Converter

URL: https://speedycalculator.com/calculators/conversion/weird-units-converter/
Last updated: 2026-10-25

> The weird units converter expresses lengths, weights and times in fun, real-world comparisons: bananas, football fields, Eiffel Towers, elephants, blue whales, smoots and microcenturies. The comparison sizes are typical values, so treat results as approximate.

## Inputs

- Length (m, km, cm, mm, in, ft, yd)
- Weight (kg, t, lb, US ton)
- Time (h, s, min, day, year)

## Results

- Bananas laid end to end (18 cm each)
- American football fields (100 yd)
- Eiffel Towers (330 m)
- Smoots (1.7018 m)
- London double-decker buses (11.2 m)
- African elephants (6 t)
- Average cars (1.5 t)
- Blue whales (150 t)
- Smartphones (180 g)
- Microcenturies (52.6 min)
- Fortnights
- Medieval moments (90 s)

## Formula

```
number of things = your quantity ÷ size of one thing
```

## Explanation

Comparing a big or small number with something familiar makes it easier to picture. The smoot (1.7018 m) is a real unit, invented in 1958 when MIT students measured the Harvard Bridge with their classmate Oliver Smoot. A microcentury (about 52.6 minutes) is a classic lecture length.

### How to use the Weird Units Converter

- **Length**
- **Weight**
- **Time**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Your value is converted to SI units and divided by the size of each object.

### Inputs explained

FieldWhat to enterLengthUnits: m, km, cm, mm, in, ft …WeightUnits: kg, t, lb, US tonTimeUnits: h, s, min, day, year

### What each result means

- **Bananas laid end to end (18 cm each)** = [Length] ÷ 0.18
- **American football fields (100 yd)** = [Length] ÷ 91.44
- **Eiffel Towers (330 m)** = [Length] ÷ 330
- **Smoots (1.7018 m)** = [Length] ÷ 1.7018
- **London double-decker buses (11.2 m)** = [Length] ÷ 11.2
- **African elephants (6 t)** = [Weight] ÷ 6000
- **Average cars (1.5 t)** = [Weight] ÷ 1500
- **Blue whales (150 t)** = [Weight] ÷ 150000
- **Smartphones (180 g)** = [Weight] ÷ 0.18
- **Microcenturies (52.6 min)** = [Time] ÷ 3155.6952
- **Fortnights** = [Time] ÷ 1209600
- **Medieval moments (90 s)** = [Time] ÷ 90

### Example values

How the main result changes when **Length** changes and everything else stays at the example values above:

Length (m)Bananas laid end to end (18 cm each)50277.875416.7100555.6125694.4150833.32001,111.1

## Worked example

Inputs — Length: 100 m; Weight: 1,000 kg; Time: 1 h.

Results — **Bananas laid end to end (18 cm each) = 555.6**; American football fields (100 yd) = 1.094; Eiffel Towers (330 m) = 0.303; Smoots (1.7018 m) = 58.76; London double-decker buses (11.2 m) = 8.93; African elephants (6 t) = 0.167; Average cars (1.5 t) = 0.667; Blue whales (150 t) = 0.00667; Smartphones (180 g) = 5,556; Microcenturies (52.6 min) = 1.141; Fortnights = 0.002976; Medieval moments (90 s) = 40.

## FAQ

**What is a smoot?**
5 ft 7 in (1.7018 m), the height of Oliver Smoot, used to measure the Harvard Bridge (364.4 smoots plus one ear).

**How long is a microcentury?**
About 52 minutes 36 seconds.

**What formula does the Weird Units Converter use?**
number of things = your quantity ÷ size of one thing.