---
title: "Measured in double-decker buses — how many things weigh"
description: "A double-decker bus weighs 12.65 t. How many double-decker buses everything else adds up to, computed from sourced figures."
url: https://atoneplace.net/measured-in/double-decker-bus/
site: "At One Place"
---

# Things measured in double-decker buses

**One double-decker bus: 12.65 t**

Used here as a unit of mass

A double-decker bus weighs about 12.65 t, which makes it a usable informal unit — "three elephants" lands where a raw figure in kg does not. Every comparison below is computed from a sourced figure rather than an invented average.

## Things measured in double-decker buses

*One double-decker bus = 12.65 t. Figures carry their own ranges on their own pages.*

| Thing | Mass | In double-decker buses |
| --- | --- | --- |
| excavator | 1,000–90,000 kg | 1.58 double-decker bus |
| fire truck | 14,000–36,000 kg | 1.50 double-decker bus |
| whale shark | 9,000–21,000 kg | 1.19 double-decker bus |
| semi truck | 12,000–36,290 kg | 1.19 double-decker bus |
| garbage truck | 12,000–20,000 kg | 1.19 double-decker bus |
| concrete mixer truck | 11,000–16,000 kg | 1.11 double-decker bus |
| Big Ben | 13.76 t | 1.09 double-decker bus |
| city bus | 11,000–20,000 kg | 1.07 double-decker bus |
| Hubble Space Telescope | 11.11 t | 1.14 of these per double-decker bus |
| school bus | 6,500–12,000 kg | 1.33 of these per double-decker bus |
| African elephant | 2,200–10,400 kg | 2.11 of these per double-decker bus |
| helicopter | 1.2–9.979 t | 2.42 of these per double-decker bus |
| ambulance | 3,200–6,800 kg | 2.53 of these per double-decker bus |
| MRI machine | 3,000–11,000 kg | 2.53 of these per double-decker bus |
| orca | 1,300–10,000 kg | 3.16 of these per double-decker bus |
| tractor | 1,000–15,000 kg | 3.16 of these per double-decker bus |

## Why informal units work

Absolute figures fail because most people have no calibrated sense of a kilogram above about the weight of a shopping bag, or of a metre above their own height. A familiar object supplies that calibration by borrowing it from something already known — which is the same reason a scale bar on a map beats a stated ratio, and why "the size of Wales" persists in journalism despite being useless to anyone who has not been there.

> The figure for one double-decker bus is itself a range rather than a constant — see its own page for the spread. These comparisons are for intuition, not measurement.

## Common questions

### How much does a double-decker bus weigh?

12.65 t

### Why compare things to double-decker buses?

Because most people have no calibrated sense of large absolute figures. A familiar object borrows intuition from something already known.

## Related pages

- [How much does a double-decker bus weigh?](https://atoneplace.net/weight/double-decker-bus/)
- [Measured in school buses](https://atoneplace.net/measured-in/school-bus/)
- [Measured in city buses](https://atoneplace.net/measured-in/city-bus/)
- [Measured in African elephants](https://atoneplace.net/measured-in/african-elephant/)
- [Measured in Asian elephants](https://atoneplace.net/measured-in/asian-elephant/)
- [Measured in blue whales](https://atoneplace.net/measured-in/blue-whale/)
- [Measured in giraffes](https://atoneplace.net/measured-in/giraffe/)
- [Measured in cars](https://atoneplace.net/measured-in/car/)
- [Measured in pianos](https://atoneplace.net/measured-in/piano/)
- [Measured in refrigerators](https://atoneplace.net/measured-in/refrigerator/)
- [Measured in washing machines](https://atoneplace.net/measured-in/washing-machine/)

## Sources

- Typical range compiled from manufacturer specifications — At One Place (/about/)