Convert cm to lbs from cubic centimeters using water or your own density, or from length in cm and weight per length. Also converts lbs back to cm.

Use cubic centimeters (volume). Linear centimeters alone cannot determine mass.

Water (1 g/cmยณ) is a common estimate for liquids and soft tissue. Choose Enter density for other materials.

Optional settings

cm to lbs Conversion Formula

Linear centimeters alone do not determine pounds. Use length with linear mass density, or cubic centimeters with volume density:

mass (lb) = length (cm) ร— linear density (g / cm) / 453.59237 mass (lb) = volume (cmยณ) ร— density (g / cmยณ) / 453.59237

Formula source:  National Institute of Standards and Technology (NIST) Special Publication 811, Appendix B โ€“ Conversion Factors (2008)

Variables:

  • mass (lb) is the avoirdupois mass in pounds
  • length is measured in cm; volume is measured in cmยณ, which is a different quantity

Multiply length by the objectโ€™s linear mass density, or volume by the materialโ€™s volume density, then convert grams to pounds. A density or linear density is required; there is no universal cm-to-lb conversion factor.

Cubic Centimeters to Pounds Conversion Table (Water, ฯ = 1.00 g/mL)
Cubic Centimeters (cmยณ) Pounds (lb)
10.002
50.011
100.022
250.055
500.110
750.165
1000.220
1250.276
1500.331
2000.441
2500.551
3000.661
3500.772
4000.882
4500.992
5001.102
7501.653
10002.205
15003.307
20004.409
* Rounded to 3 decimals. Assumes water (ฯ = 1.00 g/mL). 1 cmยณ water โ‰ˆ 1 g; 1 cmยณ โ‰ˆ 0.002205 lb (1 lb = 453.59237 g).

What is the cm to lbs Conversion?

Length in cm needs a known linear mass density to determine mass in pounds. Volume in cmยณ needs a known volume density. The water table uses the approximate density 1 g/cmยณ, so 1 cmยณ corresponds to approximately 0.00220462 lb in that model. Actual water density depends on temperature. The calculator defaults to water and lets you enter another density.

How to Convert cm to lbs?

The following steps calculate mass from length and linear mass density:

  1. First, measure the length in centimeters (cm) and determine the objectโ€™s linear mass density.
  2. Next, multiply length (cm) by linear density (g/cm), then divide by 453.59237 to obtain pounds.
  3. Finally, calculate the mass in pounds (lb). For volume, select Mass from volume and enter cmยณ with volume density instead.
  4. Check the chosen solve mode and units against your measurements, then compare your answer with the calculator above.

Example Problem:

Use the following variable as an example problem to test your knowledge.

Length = 50 cm; linear mass density = 0.02 kg/cm. Mass = 50 ร— 0.02 = 1 kg = approximately 2.20462262 lb.