Volume Converter
Convert between liters, gallons (US & UK), cubic meters, cubic feet, milliliters and cubic inches. Type in any field to update all the others.
Gallon standard
Switching this will recalculate gallons from current volume.
Quick presets:
Common volume conversions
| From | To | Multiply by |
|---|---|---|
| liter (L) | m³ | 0.001 |
| m³ | liter | 1000 |
| US gallon | liter | 3.785411784 |
| UK gallon | liter | 4.54609 |
| ft³ | liter | 28.3168466 |
| in³ | liter | 0.016387064 |
How this volume converter works
We use cubic meters (m³) as the internal base unit. Each time you type a value, it is converted to m³ and then to all other units using precise SI factors.
Key relations
- 1 L = 0.001 m³
- 1 mL = 0.000001 m³
- 1 ft³ = 0.028316846592 m³
- 1 in³ = 0.000016387064 m³
- 1 US gal = 0.003785411784 m³
- 1 UK gal = 0.00454609 m³
FAQ
- Why do I see many decimals? For industrial and engineering contexts, exact factors are useful. Round to 2–3 decimals for daily work.
- US vs UK gallons? Pick the right radio button above to switch.
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
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Formula (extracted text)
Key relations 1 L = 0.001 m³ 1 mL = 0.000001 m³ 1 ft³ = 0.028316846592 m³ 1 in³ = 0.000016387064 m³ 1 US gal = 0.003785411784 m³ 1 UK gal = 0.00454609 m³
Variables and units
- No variables provided in audit spec.
Sources (authoritative):
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.