Convert British Thermal Units to Ton of Oil Equivalent
Convert British Thermal Units (BTU) to Ton of Oil Equivalent (toe) instantly and accurately.
Conversion Formula
toe = BTU × 2.519957611e-8
About British Thermal Units
A British Thermal Unit (BTU) - the heat to raise 1 lb of water by 1°F - equals exactly 1,055.05585262 J. It dominates US HVAC: room air conditioners are rated in BTU/h (5,000-24,000 BTU/h = 1.5-7.0 kW); one ton of refrigeration is exactly 12,000 BTU/h. Natural gas is billed in therms (100,000 BTU) in the US. Higher heating values: natural gas ~1,020-1,050 BTU/ft³; No. 2 fuel oil ~138,700 BTU/US gal; propane ~91,500 BTU/US gal. 1 BTU = 1,055.06 J = 252.164 cal = 0.29307 Wh.
About Ton of Oil Equivalent
A ton of oil equivalent (toe) is the IEA standard for comparing primary energy sources - defined as exactly 41.868 GJ (= 10⁷ International Table kcal). IEA World Energy Balances report in Mtoe: global primary energy supply is ~580 EJ ≈ 13,860 Mtoe/year. One tonne of coal equivalent (tce) = 29.307 GJ = 0.7 toe. Natural gas: ~0.9 toe per 1,000 m³; one barrel of crude oil ≈ 0.136 toe. Average EU citizen uses ~3.0-3.5 toe/year for all energy needs. 1 toe = 41.868 GJ = 11.63 MWh = 39.683 MBTU.
Quick Reference Table
| British Thermal Units (BTU) | Ton of Oil Equivalent (toe) |
|---|---|
| 1 BTU | 2.52 × 10-8 toe |
| 2 BTU | 5.04 × 10-8 toe |
| 5 BTU | 1.26 × 10-7 toe |
| 10 BTU | 2.52 × 10-7 toe |
| 25 BTU | 6.3 × 10-7 toe |
| 50 BTU | 1.26 × 10-6 toe |
| 100 BTU | 2.52 × 10-6 toe |