Onsite Calculator

OnSite Calculator is the essential construction calculator designed for builders, contractors, carpenters, and DIY enthusiasts who work with imperial measurements.
IMPERIAL MATH MADE EASY
• Calculate with feet, inches, and fractions (1/2, 1/4, 1/8, 1/16)
• Add, subtract, multiply, and divide measurements instantly
• See results in both feet-inches and total inches
UNIT CONVERTER
• Convert between millimeters, inches, centimeters, feet, and meters
• Quick-access fraction buttons for common measurements
TRIANGLE CALCULATOR
• Calculate squareness for framing and layout using right triangle ratios


• Speak your measurements instead of typing
• Works in English and Portuguese
• Perfect for hands-free calculations on the job site
• Requires internet connection
BUILT FOR THE JOB SITE
• Clean, easy-to-read display
• Large buttons for gloved hands
• Fast and reliable
Part of the OnSite Club ecosystem for construction professionals.
Free to use.