Construction & estimating · Site operations
Plant fuel and CO₂ calculator
Diesel use, cost and CO₂ for a plant fleet from rated power, load factor and specific fuel consumption.
Standard: Rated kW × load factor × SFC
Open the live calculator → All construction & estimating calculators
Inputs in the worked example
The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.
| Input | Value | Unit |
|---|---|---|
| Rated power | 120 | kW |
| Load factor | 0.55 | |
| Specific fuel consumption | 0.26 | L/kWh |
| Hours per machine | 320 | h |
| Machines | 3 | |
| Diesel price | 1.95 | $/L |
Worked example — results
| Result | Value | Unit |
|---|---|---|
| Litres per hour | 17.16 | L/h |
| Total fuel | 16,474 | L |
| Fuel cost | $32,124 | |
| CO₂ (2.68 kg/L) | 44.15 | t |
Method, formulas and assumptions
- L/h = kW × load factor × SFC
- Diesel emission factor 2.68 kg CO₂/L (combustion only)
- Rates and productivities are example inputs. Replace them with supplier, plant-hire and crew figures for your site.
Related construction & estimating calculators
- Concrete pour planner — Number of agitator trucks, trucks needed in rotation, pour duration, finish time and cost for a concrete pour.
- Rebar cutting length and laps — Cutting length for straight, L, U or closed-link bars with bend deductions and hooks, the laps needed for…
- Aggregate and base-course tonnage — Tonnes of road base, crushed rock or sand for an area and compacted thickness, with loose volume, truck…
- Compaction production and lifts — Number of lifts, roller output and days to place and compact a fill platform.
- Excavation dewatering estimate — Inflow to a dewatered excavation treated as an equivalent large-diameter well in an unconfined aquifer, with…
- Trench shoring take-off — Panels, strut rows and struts for a strutted trench, with excavation volume and hire cost.
- Truck and loader fleet balance — Truck cycle time, trucks needed to keep the loader busy, fleet production and hours to move a volume.
- Scaffold take-off (modular) — Component count for a single-run modular scaffold, with tie count and hire cost.
- Concrete maturity (strength in place) — Temperature–time factor and equivalent age from logged temperatures, and estimated in-place strength from a…
- Concrete mix design (ACI 211.1) — Batch quantities per m³ (water, cement, coarse and fine aggregate) by the ACI absolute-volume method.
For preliminary design and education. Check every result against the current standard and your own engineering judgement before use.