Project Calculators

Estimate cubic yards for slabs, footings and columns. Punch in your dimensions and get an order-ready number in seconds.

Estimate roof area from pitch and base footprint, then preview typical material quantities and budget impact.

Estimate gravel volume, tons, bag count, and budget for driveways, trenches, and landscape base layers.

Measure rooms, decks or yards in square feet. Perfect for flooring, paint, sod and material estimates.

Count tiles needed for any floor or wall with a 10 % waste margin so you never run short on grout day.

Translate numbers to Roman numerals and back. Handy for signs, monograms, anniversaries and craft projects.

Convert between metric and imperial units — length, weight, volume and temperature — without leaving the build.

Calculate dew point, relative humidity, or air temperature from any two known values for weather and comfort checks.

Estimate apparent cold temperature from wind speed and air temperature for safer outdoor planning.

Estimate feels-like heat from temperature and humidity to gauge summer heat stress risk.

Estimate appliance electricity usage and cost from wattage, load, runtime, and utility price.

Estimate AC or heating BTU needs for rooms and home areas using size, insulation, and temperature difference.

Switch between US, UK, EU and Asia sizing in one tap. Useful for handmade footwear, gifts and pattern fitting.

Find the right band and cup based on simple measurements. A starting point for sewing, lingerie DIY and altering thrifted pieces.

Encode or decode Base64 for text and files directly in your browser with local processing.

Estimate voltage drop with NEC-style data, estimated wire resistance, or custom impedance values.

Enter any two of V, I, R, and P to solve the remaining electrical values instantly.