Free tools
Converters and calculators for land, location, and outdoor projects. Free, no account, and they work on your phone.
Private by design. Every tool here runs entirely in your browser. What you enter stays on your device. It is not uploaded to us or stored.
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Converters and measurement
Units, areas of any shape, and map scales, including acres, hectares, and old survey units.
Unit converter
Convert feet, meters, acres, square feet, hectares, cubic yards, and more, including chains and rods from old deeds.
Area calculator
Square feet and acres for rectangles, triangles, circles, four-sided lots, or a list of coordinates.
Map scale calculator
Convert map scales like 1:24,000 to 1 inch = 2,000 feet, and turn distances on a map into distances on the ground.
Common conversions: Acres to square feet · Square feet to acres · Square meters to square feet · Acres to hectares · Square meters to acres · Feet to meters · Inches to feet · Centimeters to inches · Yards to feet · Miles to kilometers
GPS, coordinates, and places
Find your coordinates, change formats, and convert between coordinate systems.
GPS coordinates
See your current latitude and longitude and US county, convert between decimal degrees, degrees-minutes-seconds, and UTM, and measure between two points.
Coordinate system converter
Convert coordinates between more than 6,700 coordinate systems worldwide by EPSG code: UTM, national grids, US State Plane, Web Mercator, and more.
Landscape and construction
Slopes, and how much concrete, gravel, mulch, or topsoil to order for an area.
Concrete calculator
Cubic yards and bags of concrete for slabs, footings, and post holes.
Gravel calculator
Cubic yards and tons of gravel or crushed stone for driveways, paths, and bases.
Mulch calculator
Cubic yards and bags of mulch for garden beds and around trees.
Topsoil calculator
Cubic yards, tons, and bags of topsoil for lawns, beds, and grading.
Cubic yard calculator
Volume in cubic yards, cubic feet, and cubic meters from length, width, and depth.
Slope calculator
Convert between percent grade, degrees, ratio, inches per foot, and roof pitch, and find the drop over a distance.
RTK
Plan RTK work with a base station or a correction network.
Need area first? Walk the boundary or trace it on the map with Dipper Area Measure, a free app by InsightSpatial. Looking for explanations rather than calculators? See our guides.