Heat Fuel Calculator

Peak Logs – Simple Log Usage Calculator

Estimate how many bulk bags you’ll need this season, plus an optional mix with 20 kg Smokeless Cobbles for steady heat.

Average stove output (kW)

Typical real-world running level, not the max on the badge.

Months of use

How many nights per week do you have a fire?

Average hours per night

Stove efficiency (%)

Most modern stoves: 70–82%.

Fuel type

% of time using Smokeless Cobbles (20 kg bags)

Optional shoulder-season blend for long, steady heat.

Total hours per week (auto)

Automatically calculated from nights × hours.

Advanced assumptions (optional)

kWh per bulk bag – Softwood

kWh per bulk bag – Hardwood

kWh per 20 kg Smokeless Cobbles bag

Weeks per month

Estimated total heat needed

– kWh

Recommended order

–

Free local delivery within 18 miles of Buxton on orders over £65. All logs are sustainably sourced and kiln-dried to under 18% moisture.

Usage varies with home size, insulation, and weather. This tool uses your actual burn habits to estimate realistically.
Softwood burns hot and fast — ideal for everyday use. Hardwood gives longer embers for slow, steady heat.
Bulk bags are approximate volume/mass products (never “ton bags”). All logs are kiln-dried and sustainably sourced from local woodland.