About KilnSchedule
KilnSchedule is a free tool for building pottery kiln firing schedules. Tell it your cone, whether you are firing bisque or glaze, and how fast you want to go, and it gives you an exact ramp and hold schedule plus a print-ready PDF.
Where the numbers come from
Accuracy is the whole point of this site, so nothing here is invented. The peak temperatures are the Orton self-supporting cone temperature equivalents, transcribed from the official Edward Orton Jr. Ceramic Foundation chart. The ramp and hold steps follow the standard cone-fire programs that ship in Bartlett, Skutt, and L&L kiln controllers, the same programs most studio potters already fire by.
Because a cone measures heat-work and not a single temperature, the builder reads each peak from the Orton column nearest your final ramp rate. That keeps the firing honest: a slower final ramp reaches the same cone at a lower temperature.
Every temperature in the cone chart and every default ramp rate traces to a published source. The sources are listed on each guide page.
What it is, and what it is not
This is a starting point and a reference, not a guarantee. Kilns age, thermocouples drift, clays and glazes differ, and load size changes how heat moves. Treat the schedule as solid guidance, then fire a witness cone and adjust. Always follow your kiln and clay or glaze maker instructions.
Free, private, no signup
The builder runs entirely in your browser. There is no account, nothing to install, and the inputs you type never leave your device. Build as many schedules as you like.