Dimension Converter
Length and volume across metric and imperial units
Conversions use exact international factors (1 in = 25.4 mm; 1 US gal = 3.785411784 L).
Converted values
Copied to clipboardClick any row to copy its value.
About Dimension Converter
The dimension converter handles length and volume conversions across metric and imperial units in one place. Pick the Length tab for millimeters through miles, or the Volume tab for milliliters through cubic yards and both US and imperial gallons; enter a value and its unit, and a full table of equivalents appears.
All conversions use the exact international factors — 1 inch is defined as exactly 25.4 mm, and 1 US gallon as exactly 3.785411784 liters — so the results are as precise as the definitions themselves. Every row in the results table is click-to-copy, which makes moving values into a spreadsheet, CAD file, or email painless.
It is the everyday tool for construction and engineering work that straddles unit systems: checking an imperial drawing against metric stock, converting cubic meters of concrete to cubic yards for a US supplier, or translating gallons to liters. Free, instant, and entirely in your browser.
How to use Dimension Converter
- Choose the Length or Volume tab.
- Enter your value and select its unit.
- Read the full table of converted values in every other unit.
- Click any row to copy that value to the clipboard.