Activity Concentration Converter
Convert between all activity concentration units instantly. Select your units from the dropdowns below and enter a value to see the conversion in real-time.
SI unit: becquerel per cubic metre (Bq/m³)
Conversion Formula
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About Activity Concentration Units
Select units above to see detailed information about them.
Common Activity Concentration Conversions
- 1 nCi/m³ = 37 Bq/m³ = 1 pCi/L (exact; US radon unit equivalence)
- WHO indoor radon reference level: 100 Bq/m³ ≈ 2.70 pCi/L
- US EPA indoor radon action level: 4 pCi/L = 148 Bq/m³
- EU residential radon reference level: 300 Bq/m³ (Directive 2013/59/Euratom)
- 1 kBq/m³ = 1 Bq/L | 1 MBq/m³ = 1 kBq/L
- 1 dpm/L = 1000/60 Bq/m³ ≈ 16.67 Bq/m³
- Outdoor background 222Rn: 5-15 Bq/m³ globally
- 1 Ci/m³ = 3.7 × 1010 Bq/m³ (exact)