Tech Calculators
Digital-age math
Free tech calculators that run entirely in your browser. Pick a tool below — every formula is shown.
Aspect Ratio Calculator
Simplify any resolution to its ratio.
Bandwidth Calculator
The internet speed your devices actually need.
Battery Life Calculator
How long will that battery really last?
Download Time Calculator
Exact download times from file size and speed.
File Size Calculator
Predict file size before you render.
Screen Size Calculator
Real TV and monitor dimensions, instantly.