Convert Tun to Cubic Foot
Convert tuns to cubic feet instantly. 1 tun = 33.6875 cubic foot — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Foot to Tun converter for the reverse conversion.
Units explained
Tun
A tun is 252 US gallons (953.92 L), the largest traditional liquid cask.
From Old English/French for a large barrel; the basis of 'tonnage'.
Historical for wine and the origin of ship tonnage.
Medieval cask system.
Cubic Foot
A cubic foot is the volume of a cube one foot on a side (28.3168 L).
Derived by cubing the international foot (0.3048 m).
Used for natural gas, refrigerators, shipping and HVAC.
1959 yard agreement.
Tun to Cubic Foot conversion formula
The relationship between tuns and cubic feet:
To convert tuns to cubic feet, multiply the value in tuns by 33.6875. To reverse, multiply cubic feet by 0.0296846011.
How to use this converter
Type a value into the calculator. The result in cubic feet updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Foot to Tun converter for the reverse direction.
Step-by-step: convert tuns to cubic feet
- Write down the value in tuns (tun).
- Multiply that value by the factor 33.6875.
- The product is the equivalent value in cubic feet (ft³).
- To reverse, multiply the cubic foot value by 0.0296846011.
Worked examples
Example 1 — Convert 1 tun to ft³:
1 × 33.6875 = 33.6875 ft³
Example 2 — Convert 100 tun to ft³:
100 × 33.6875 = 3368.75 ft³
Real-world example — Fabric and tailoring
One tun of fabric converts to a value in cubic feet commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 tun × 33.6875 = 33.6875 ft³
Real-world example — Body height conversion (reverse direction)
You measure 1.75 tuns tall and need to fill in a gym membership form or medical record that asks for height in cubic feet. This is the most-used everyday length conversion in metric-using countries.
1.75 tun × 33.6875 = 58.953125 ft³
Real-world example — Pet and accessory dimensions
A 3-tun dog leash equals a tidy round value in cubic feet. Pet-supply shopping frequently mixes the two units across product specifications.
3 tun × 33.6875 = 101.0625 ft³
Tun to Cubic Foot conversion table
Standard reference values for converting tuns to cubic feet:
| Tun [tun] | Cubic Foot [ft³] |
|---|---|
| 0.01 | 0.336875 |
| 0.1 | 3.36875 |
| 1 | 33.6875 |
| 2 | 67.375 |
| 3 | 101.0625 |
| 4 | 134.75 |
| 5 | 168.4375 |
| 10 | 336.875 |
| 20 | 673.75 |
| 30 | 1010.625 |
| 40 | 1347.5 |
| 50 | 1684.375 |
| 100 | 3368.75 |
| 500 | 16843.75 |
| 1000 | 33687.5 |
Frequently asked questions
How many cubic feet is 1 tun?
How do I convert tuns to cubic feet?
How do I convert cubic feet back to tuns?
How many cubic feet is 100 tuns?
Popular volume unit conversions
Convert Tun to other volume units
Show all Tun conversions
Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 tun = 33.6875 ft³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.