# Gas Bill Calculator

> An independent, free UK household gas bill calculator and guide to meter readings, gas usage, tariffs and bill charges. Calculate an estimate from metric or imperial meter readings without creating an account.

The canonical website is https://www.gasbillcalculator.com. The links below point to public HTML pages.

The calculator converts meter volume to kilowatt hours (kWh), then separates usage cost, standing charge and VAT. Enter your own tariff rates before VAT; the calculator adds 5% VAT. Default rates are illustrative, not a live tariff feed. Calculations run in the browser, and results are stored for the browser session. The public results page initially displays an example bill; a visitor's saved calculation replaces it in their browser.

For price-cap news, support schemes and average-bill examples, check the linked page's dates, geographic scope, assumptions and cited sources. Annual illustrations based on one price-cap period are not full-year forecasts. Annual calculator projections extrapolate the entered period's usage and costs.

## Calculator and core guides

- [Gas bill calculator](https://www.gasbillcalculator.com/): Estimate usage, standing charge, VAT and projected costs from readings, tariff rates and billing days.
- [How to calculate a gas bill](https://www.gasbillcalculator.com/how-to-calculate-gas-bill): Step-by-step metric and imperial calculations, worked examples and rounding assumptions.
- [How to read a gas meter](https://www.gasbillcalculator.com/gas-meters): Identify metric, imperial, smart and dial meter readings.
- [Gas units to kWh conversion](https://www.gasbillcalculator.com/news/gas-meter-units-to-kwh-conversion): Conversion formulas, calorific value, volume correction and worked examples.
- [Example gas bill breakdown](https://www.gasbillcalculator.com/yourbill): Public demonstration of the calculator's result, replaced by saved session results for visitors who have calculated a bill.
- [What makes up your gas bill](https://www.gasbillcalculator.com/what-makes-up-your-gas-bill): Unit rates, standing charges, VAT and the costs behind energy bills.
- [Average gas bill](https://www.gasbillcalculator.com/average-gas-bill): Dated household consumption data and illustrative costs with sources and limitations.
- [Calculator help](https://www.gasbillcalculator.com/help): Choosing meter types, finding rates and resolving input errors.
- [Gas bill terminology](https://www.gasbillcalculator.com/terminology): Plain-English explanations of common billing terms.

## News and household guides

- [News and guide index](https://www.gasbillcalculator.com/news): Browse gas-price updates, household guides and billing explainers.
- [Why is my gas bill so high?](https://www.gasbillcalculator.com/news/why-is-my-gas-bill-so-high): Checks for unexpectedly high usage or charges.
- [Smart gas meter not sending readings](https://www.gasbillcalculator.com/news/smart-gas-meter-not-sending-readings): Meter-reading and communication troubleshooting.
- [Fixed vs variable gas tariffs](https://www.gasbillcalculator.com/news/fixed-vs-variable-gas-tariff): Understand tariff options and comparison factors.
- [Help paying a gas bill](https://www.gasbillcalculator.com/news/help-paying-gas-bill): Information about payment difficulties and available support.
- [Gas bill complaints](https://www.gasbillcalculator.com/news/gas-bill-complaint-energy-ombudsman): Supplier complaints and escalation guidance.

## Optional

- [About Gas Bill Calculator](https://www.gasbillcalculator.com/about-us): Site background and how the independent calculator works.
- [Privacy policy](https://www.gasbillcalculator.com/privacy): Calculator inputs, analytics, advertising cookies and contact data.
- [Contact](https://www.gasbillcalculator.com/contact-us): Report problems, suggest improvements or request corrections.
- [Sitemap](https://www.gasbillcalculator.com/sitemap.xml): Complete index of public pages.