⚖️ Grams to Atomic Mass Units Converter

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1 gram =
6.02214 × 10²³ atomic mass units
1 atomic mass unit =
1.66054 × 10⁻²⁴ grams
Formula
u (Da) = g × 6.02214 × 10²³
Handy values
5 g = 3.01107 × 10²⁴ u (Da) · 10 g = 6.02214 × 10²⁴ u (Da) · 100 g = 6.02214 × 10²⁵ u (Da)

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⚡ Grams to Atomic Mass Units: the quick answer

1 g = 6.02214 × 10²³ u (Da) 1 gram equals 6.02214 × 10²³ atomic mass units

To convert grams to atomic mass units, multiply the value by 6.02214 × 10²³. To go the other way, multiply atomic mass units by 1.66054 × 10⁻²⁴ to get grams.

↔ Convert atomic mass units to grams instead

🧮 Formula

Grams to Atomic Mass Units
u (Da) = g × 6.02214 × 10²³
Atomic Mass Units to Grams
g = u (Da) × 1.66054 × 10⁻²⁴

Where

  • g = the weight in grams
  • u (Da) = the weight in atomic mass units
Every unit here is defined by its weight in kilograms, so the conversion factor is (kilograms per gram) ÷ (kilograms per atomic mass unit).

📊 Grams to Atomic Mass Units conversion table

Grams (g)Atomic Mass Units (u (Da))
1 g6.02214 × 10²³ u (Da)
2 g1.20443 × 10²⁴ u (Da)
3 g1.80664 × 10²⁴ u (Da)
4 g2.40886 × 10²⁴ u (Da)
5 g3.01107 × 10²⁴ u (Da)
6 g3.61328 × 10²⁴ u (Da)
7 g4.2155 × 10²⁴ u (Da)
8 g4.81771 × 10²⁴ u (Da)
9 g5.41993 × 10²⁴ u (Da)
10 g6.02214 × 10²⁴ u (Da)
12 g7.22657 × 10²⁴ u (Da)
14 g8.431 × 10²⁴ u (Da)
15 g9.03321 × 10²⁴ u (Da)
20 g1.20443 × 10²⁵ u (Da)
21 g1.26465 × 10²⁵ u (Da)
24 g1.44531 × 10²⁵ u (Da)
25 g1.50554 × 10²⁵ u (Da)
30 g1.80664 × 10²⁵ u (Da)
40 g2.40886 × 10²⁵ u (Da)
50 g3.01107 × 10²⁵ u (Da)
60 g3.61328 × 10²⁵ u (Da)
75 g4.51661 × 10²⁵ u (Da)
80 g4.81771 × 10²⁵ u (Da)
100 g6.02214 × 10²⁵ u (Da)
200 g1.20443 × 10²⁶ u (Da)
250 g1.50554 × 10²⁶ u (Da)
300 g1.80664 × 10²⁶ u (Da)
400 g2.40886 × 10²⁶ u (Da)
500 g3.01107 × 10²⁶ u (Da)
750 g4.51661 × 10²⁶ u (Da)
1,000 g6.02214 × 10²⁶ u (Da)

✏️ Worked examples

Convert 25 grams to atomic mass units

25 g × 6.02214 × 10²³ = 1.50554 × 10²⁵ u (Da)

Try this example →

Convert 250 grams to atomic mass units

250 g × 6.02214 × 10²³ = 1.50554 × 10²⁶ u (Da)

Try this example →

📘 About these units

Gram (g). The gram is one thousandth of a kilogram, the everyday unit for food, gold and small items.

Atomic mass unit (u (Da)). The atomic mass unit (dalton) is 1/12 of the mass of a carbon-12 atom.

❓ Frequently asked questions

How many atomic mass units are in one gram?

There are 6.02214 × 10²³ atomic mass units in one gram.

How do I convert grams to atomic mass units?

Multiply the number of grams by 6.02214 × 10²³. For example, 10 grams equal 6.02214 × 10²⁴ atomic mass units.

How many grams are in one atomic mass unit?

One atomic mass unit equals 1.66054 × 10⁻²⁴ grams.

How many atomic mass units is 12 grams?

7.22657 × 10²⁴ atomic mass units. Other common values: 5 grams = 3.01107 × 10²⁴ atomic mass units and 100 grams = 6.02214 × 10²⁵ atomic mass units.

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