# Bed Size Calculator

URL: https://speedycalculator.com/calculators/everyday-life/bed-size/
Last updated: 2026-10-25

> The bed size calculator recommends the minimum and comfortable bed length for your height and suggests standard North American or European bed sizes for one or two sleepers.

## Inputs

- Region
- Height of the tallest sleeper (in, cm, ft)
- Sleepers

## Results

- Minimum bed length
- Comfortable bed length
- North American size
- European size

## Formula

```
Minimum length = height + 10 cm (4 in)
Comfortable length = height + 20 cm (8 in)
Standard lengths: Twin/Full 75 in, Queen/King/Twin XL 80 in, California King 84 in; Europe 190, 200, 210, 220 cm
```

## Explanation

A bed should be at least 10–15 cm longer than you are tall so your feet don't hang over and you can stretch out; sleep experts often recommend about 20 cm. Width matters too: each sleeper needs at least about 70–80 cm (27–31 in).

### How to use the Bed Size Calculator

- **Region**
- **Height of the tallest sleeper**
- **Sleepers**

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

### How it works

Choose your region, enter the height of the tallest sleeper and the number of sleepers.

### Tips

- Use the figures from your own bills and product labels – prices and appliance ratings vary widely.
- Look at yearly totals: small daily costs add up and make it easier to compare options.
- Round quantities up to whole packs, rolls or bulbs when you shop.
- Re-check the numbers when prices change; most results scale directly with the unit price.

### Common mistakes to avoid

- Confusing watts (power) with watt-hours or kilowatt-hours (energy).
- Comparing prices without bringing them to the same unit first.
- Ignoring one-off costs such as installation, delivery or replacement parts.

### Inputs explained

FieldWhat to enterRegionChoose one: North America, EuropeHeight of the tallest sleeperUnits: in, cm, ftSleepersChoose one: One, Two

### What each result means

- **Minimum bed length** = [Height of the tallest sleeper] + 0.1
- **Comfortable bed length** = [Height of the tallest sleeper] + 0.2

### Example values

How the main result changes when **Height of the tallest sleeper** changes and everything else stays at the example values above:

Height of the tallest sleeper (in)Comfortable bed length (in)354352.560707887.595105113140148

## Worked example

Inputs — Region: North America; Height of the tallest sleeper: 70 in; Sleepers: Two.

Results — Minimum bed length = 74 in; **Comfortable bed length = 78 in**; North American size = Queen (60 × 80 in); European size = 160 × 200 cm.

## FAQ

**What bed size do I need if I am 6 ft tall?**
At least 76–80 in long – a Queen, King or Twin XL (80 in); a Full (75 in) will feel short.

**What is the difference between King and California King?**
A King is wider (76 × 80 in); a California King is narrower but longer (72 × 84 in).

**How wide should a bed for two be?**
At least a Queen (60 in / 160 cm); a King (76 in / 180 cm) gives each person as much room as a single bed.

**What formula does the Bed Size Calculator use?**
Minimum length = height + 10 cm (4 in).