Logistics calculators

Unit converter

Convert length, weight, volume and area directly with fixed factors.

Your result

Enter values and calculate, or load an example.

Fixed conversion factors

Conversion uses metres, kilograms, square metres or cubic metres: Value × source factor ÷ destination factor.

1 in = 2.54 cm · 1 yd = 0.9144 m · 1 mi = 1,609.344 m · 1 lb = 0.45359237 kg · 1 US liquid gallon = 3.785411784 l · 1 ft² = 0.09290304 m².

Pounds and ounces use the international avoirdupois system. US liquid gallons differ from Imperial gallons. Decimal comma and decimal point are accepted; do not use thousands separators.

How to use this calculator

Choose length, area, weight or volume and select source and destination units. After the first calculation, the result and unit overview update live. Gallons explicitly mean US liquid gallons; pounds and ounces use the international avoirdupois system.

Formula and calculation

1 inch = 25.4 mm · 1 m³ = 1,000 litres · 1 lb = 0.45359237 kg

Worked example

24 inches equal 609.6 mm or 60.96 cm. 10 lb equal 4.5359237 kg. 0.12 m³ equals 120 litres.

Frequently asked questions

Is one inch exactly 2.54 cm?

Yes. An international inch is exactly 25.4 mm or 2.54 cm. This conversion requires no estimate.

How do I convert cubic centimetres to cubic metres?

Divide cm³ by 1,000,000. When calculating volume from three lengths, first express all dimensions in the same unit: 100 × 100 × 100 cm gives 1 m³.

Which pound does lb represent?

Here, lb is the international avoirdupois pound, exactly 0.45359237 kg. The colloquial German pound of 500 g is a different quantity.

Length, weight, volume & area

Your result

Fixed conversion factors