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Length converter

gigameter to terameter

Convert gigameter (Gm) to terameter (Tm). Use an editable length converter, conversion formula, and reference table.

0.001

1 Gm = 0.001 Tm

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Conversion formula

Tm = Gm × 0.001

One gigameter equals 0.001 terameter. Multiply your value in gigameter by this factor to get terameter. For the reverse conversion, divide by the same factor.

Worked example

To convert 5 gigameter:
5 × 0.001 = 0.005 Tm

Conversion table

gigameter (Gm)terameter (Tm)
0.010.00001
0.10.0001
10.001
20.002
50.005
100.01
250.025
500.05
1000.1
10001

About these measurements

Length measures the distance between two points.

The base reference used here is the meter. One gigameter is 1,000,000,000 base units; one terameter is 1e+12 base units.

Important distinctions

International feet and inches are used. Survey feet are not included.

Precision

The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.

Common questions

How do I convert Gm to Tm?

Multiply the quantity in Gm by 0.001. You can also type the value into the converter above.

Can I reverse the conversion?

Yes. Use the swap button or open the terameter to gigameter converter.

Reference

NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.

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