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Luminous Intensity converter

gigacandela to teracandela

Convert gigacandela (Gcd) to teracandela (Tcd). Use an editable luminous intensity converter, conversion formula, and reference table.

0.001

1 Gcd = 0.001 Tcd

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Conversion formula

Tcd = Gcd × 0.001

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

Worked example

To convert 5 gigacandela:
5 × 0.001 = 0.005 Tcd

Conversion table

gigacandela (Gcd)teracandela (Tcd)
0.010.00001
0.10.0001
10.001
20.002
50.005
100.01
250.025
500.05
1000.1
10001

About these measurements

Luminous intensity is visible-light output per unit solid angle in a direction.

The base reference used here is the candela. One gigacandela is 1,000,000,000 base units; one teracandela is 1e+12 base units.

Important distinctions

Candela is a directional quantity and cannot be converted directly to lumens without geometry.

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 Gcd to Tcd?

Multiply the quantity in Gcd 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 teracandela to gigacandela 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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