Specific Activity Converter

Convert between all specific activity units instantly. Select your units from the dropdowns below and enter a value to see the conversion in real-time.

SI unit: becquerel per kilogram (Bq/kg)

Conversion Formula

About Specific Activity Units

Common Specific Activity Conversions

• 1 Ci/g = 3.7 × 10¹³ Bq/kg (exact) = 1 kCi/kg
• 1 Bq/kg = 1 mBq/g = 10^-3 Bq/g
• 1 kBq/kg = 1 Bq/g  |  1 MBq/kg = 1 kBq/g
• 1 nCi/kg = 37 Bq/kg ≈ 1 pCi/g (= pCi per gram)
• 1 dpm/g = 1000/60 Bq/kg ≈ 16.67 Bq/kg
• Specific activity of ²²⁶Ra (pure): ≈ 37 GBq/g = 37 TBq/kg = 1 Ci/g
• Natural potassium (⁴⁰K, 0.0117 %): ≈ 31.3 Bq/g = 31.3 kBq/kg
• EU food safety limit for ¹³⁷Cs: 600 Bq/kg (general foods)

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