Understand your tech.
Calculate. Compare. Save.
Practical calculators for 3D printing, electricity and electronics. No account, no guesswork, and no paywall for basic calculations.
Three specialties. One place.
Pick a topic and get straight to your calculation. More tools are planned for the same categories.
3D printing
Material cost, machine expenses and print jobs.
Power & energy
Electricity, batteries and charging.
Computers & electronics
Power draw and device specifications.
Tools you can use right now
All calculations run directly in your browser. Enter your own numbers and instantly see the results.
3D print cost calculator
Filament, electricity, machine costs, markup and failed-print risk.
ElectricityElectricity cost calculator
Estimate device electricity costs, including standby consumption.
BatteriesBattery runtime calculator
Convert mAh or Wh into approximate time powering a device.
3D printing3D Filament Length & Weight Calculator
Convert filament weight to length for PLA, PETG or ABS. Check whether your spool contains enough material for the next print and estimate its value.
3D printing3D Printing Volumetric Flow Calculator
Convert hotend volumetric flow into a conservative print speed. Calculate required mm³/s for your chosen layer height, width and speed.
ElectronicsLED Series Resistor Calculator
Calculate the resistor, current and resistor power for LEDs in series. Select the next higher E12 standard resistor value.
PC hardware · ElectricityGaming PC Electricity Cost Calculator
Compare gaming, working and idle power use and estimate monthly electricity costs for a PC setup.
Energy · ChargingBattery & Power Bank Charging Time Calculator
Estimate power bank and battery charging time using capacity, charging watts and conversion efficiency.
Electronics · USB-CUSB-C Power Delivery Charging Power Calculator
Find the theoretical USB-C charging limit set by your charger, cable or device.
PC components · Power supplyPC Power Supply Wattage Calculator
Estimate PSU wattage from component loads, possible power spikes and extra headroom.
Basic calculations stay free
This is the initial release. Project saving, multiple-device comparisons and reports may arrive later, but nothing is being sold today.