Utilities
Small checks that save a search: whether a phone number is valid, what a user agent says, where an IP address is and how fast the connection to this site is.
Choose a tool 09
Percentage Increase Calculator
Calculate percentage increase or decrease between two values. Apply a percentage, find the original value, and see the formula, multiplier and worked steps.
Open tool ↗Roof Pitch Calculator
Convert roof pitch to degrees, percentage and x/12. Calculate slope from rise and run, find sloped length with overhang and check a roof pitch chart.
Open tool ↗Board Feet Calculator
Calculate board feet from thickness, width, length and piece count. Combine lumber sizes, convert to m³, add extra and estimate cost per BF or MBF.
Open tool ↗Asphalt Calculator
Calculate asphalt tonnage from area, compacted thickness and mix density. Combine multiple areas, compare metric and US tons, and estimate material cost.
Open tool ↗Cubic Yard Calculator
Calculate cubic yards for soil, mulch, gravel or concrete. Combine rectangles, circles, triangles and rings, convert to m³ and estimate material cost.
Open tool ↗Gravel Calculator
Calculate how much gravel you need in cubic yards, cubic meters and tons. Combine multiple areas, adjust density and estimate material cost for free.
Open tool ↗User Agent Parser
Decode a user-agent string to see the browser, rendering engine, operating system and device type it claims, including bots.
Open tool ↗Phone Number Validator
Check whether a phone number is valid for its country, see whether it is mobile or landline, and get it in international, national and E.164 formats.
Open tool ↗Internet Speed Test
Measure the latency and download speed between your browser and this website with a short test that uses about 3 MB of data.
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