⚖️ Atomic Mass Units to Grams Converter

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1 atomic mass unit =
1.66054 × 10⁻²⁴ grams
1 gram =
6.02214 × 10²³ atomic mass units
Formula
g = u (Da) × 1.66054 × 10⁻²⁴
Handy values
100 u (Da) = 1.66054 × 10⁻²² g · 1,000 u (Da) = 1.66054 × 10⁻²¹ g · 10,000 u (Da) = 1.66054 × 10⁻²⁰ g

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⚡ Atomic Mass Units to Grams: the quick answer

1 u (Da) = 1.66054 × 10⁻²⁴ g 1 atomic mass unit equals 1.66054 × 10⁻²⁴ grams

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

↔ Convert grams to atomic mass units instead

🧮 Formula

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

Where

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

📊 Atomic Mass Units to Grams conversion table

Atomic Mass Units (u (Da))Grams (g)
1 u (Da)1.66054 × 10⁻²⁴ g
5 u (Da)8.3027 × 10⁻²⁴ g
10 u (Da)1.66054 × 10⁻²³ g
25 u (Da)4.15135 × 10⁻²³ g
50 u (Da)8.3027 × 10⁻²³ g
100 u (Da)1.66054 × 10⁻²² g
250 u (Da)4.15135 × 10⁻²² g
500 u (Da)8.3027 × 10⁻²² g
1,000 u (Da)1.66054 × 10⁻²¹ g
2,500 u (Da)4.15135 × 10⁻²¹ g
5,000 u (Da)8.3027 × 10⁻²¹ g
10,000 u (Da)1.66054 × 10⁻²⁰ g
100,000 u (Da)1.66054 × 10⁻¹⁹ g
1,000,000 u (Da)1.66054 × 10⁻¹⁸ g

✏️ Worked examples

Convert 25 atomic mass units to grams

25 u (Da) × 1.66054 × 10⁻²⁴ = 4.15135 × 10⁻²³ g

Try this example →

Convert 250 atomic mass units to grams

250 u (Da) × 1.66054 × 10⁻²⁴ = 4.15135 × 10⁻²² g

Try this example →

📘 About these units

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

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

❓ Frequently asked questions

How many grams are in one atomic mass unit?

There are 1.66054 × 10⁻²⁴ grams in one atomic mass unit.

How do I convert atomic mass units to grams?

Multiply the number of atomic mass units by 1.66054 × 10⁻²⁴. For example, 10 atomic mass units equal 1.66054 × 10⁻²³ grams.

How many atomic mass units are in one gram?

One gram equals 6.02214 × 10²³ atomic mass units.

How many grams is 1,000 atomic mass units?

1.66054 × 10⁻²¹ grams. Other common values: 100 atomic mass units = 1.66054 × 10⁻²² grams and 10,000 atomic mass units = 1.66054 × 10⁻²⁰ grams.

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