Technology calculators

Choose a tool, enter your numbers and see both the result and the method behind it.

Aspect Ratio Calculator

Scale image or video dimensions while preserving a selected width-to-height ratio.

Calculate pixel density, pixel pitch and physical screen dimensions.

Estimate media file size from bitrate and duration or the bitrate available for a size limit.

Estimate usable energy and runtime from battery voltage, capacity, load and efficiency.

Estimate array size, panel count and annual production from energy use and solar-resource assumptions.

Estimate energy from the wall, charging time and cost for a battery state-of-charge change.

Model monthly cloud-storage cost from capacity, retrieval, egress and request assumptions.