Precision Gas Rate Verification & Thermodynamic Correction
Raw meter readings are inaccurate on their own. Gas compresses under pressure and expands with heat, meaning a basic m³/h clocking can be dangerously misleading. GasCalc automates the complex thermodynamic corrections required to convert raw volumetric flow into a true energy input (MJ/h). Verify an appliance's actual gas rate against its badged data plate instantly, preventing dangerous over-firing, inefficient under-firing, and strict regulatory compliance failures.
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Core Capabilities & Audit-Ready Reporting
Stop risking compliance failures on manual math and generic approximations. GasCalc transforms complex AS 3814 regulatory requirements into a rapid, error-free digital workflow.
Automated Thermodynamic Correction
Automatically applies Charles's and Boyle's Laws, correcting raw meter flow for measured gas pressure, local atmospheric pressure, and gas temperature to determine true gas density.
Instant m³/h to MJ/h Conversion
Select your local network's precise Heating Value or input a custom parameter to instantly convert standardized volumetric flow into exact energy consumption.
Appliance Capacity Verification
Input the appliance's nominal data plate rating. GasCalc instantly calculates the deviation percentage, flagging any results outside the standard ±5% tolerance that require immediate adjustment.
Data-Driven Compliance
Generates a complete, JSON-driven mathematical audit trail showing the uncorrected flow, pressure factor, temperature factor, and final corrected gas rate.
Field-Optimized Interface
Designed for gloved hands. Use the integrated smart stopwatch to time meter revolutions directly within the app, complete with automatic rollover detection.
Inspector-Ready Output
Outputs crisp, vector-based PDF reports directly from the field, providing Technical Regulators with the exact mathematical proof required to certify safe burner adjustment.
How the Calculator Works
GasCalc replaces error-prone manual math with a structured, field-ready interface, ensuring your commissioning data is robust and accurate.
Record Meter Readings
Use the integrated stopwatch to time the gas meter and input the initial and final meter readings.
Apply Network Data
Select your local network's heating value and input the actual ambient temperature and measured gas pressure.
Generate Audit Trail
GasCalc mathematically corrects the raw flow to Standard Reference Conditions, providing the true Gas Rate (MJ/h) and a complete step-by-step audit trail.
Legislative Framework
State & Territory Regulations
State legislation strictly dictates that gas fitting work must result in safe operation and explicitly mandates adherence to AS 3814 for Type B appliance installations. Failing to accurately verify appliance capacity risks severe compliance breaches under State Regulations.
AS 3814:2018 (Clause 3.6.1)
Mandates that "All burners shall maintain satisfactory combustion under all operating conditions"—a condition that cannot be guaranteed if the appliance is significantly over-firing or under-firing.
AS 3814:2018 (Appendix I4)
Specifically requires commissioning personnel to "Check the gas flow rate with the appliance specification" applying correct temperature and pressure corrections.
GasCalc generates a transparent, step-by-step breakdown of your gas rate calculation, ready for regulatory submission.
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