QUICK FIELD TOOLS

A useful answer. Clear assumptions.

Eight free calculators and a spring road restriction lookup for the arithmetic that comes up on a dirt job. No sign-up or job setup. Calculate locally, download a PDF or choose what to share. Prepare them online before using them without signal.

Check an international survey file

Find numeric or duplicate-point issues in CSV/TXT files without uploading them. Up to 10 MB and 50,000 points. Choose decimal and thousands separators, metres or feet, and record the source reference. This checks file notation; it does not transform coordinates or certify survey accuracy.

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Read the file, units and early access guide

Grade check calculatorBenchmark, backsight and foresight to a point elevation, then cut or fill against a target and your tolerance. Trench volume calculatorVertical, sloped or benched trenches; pipe displacement, bedding, backfill and excavated spoil hauling. Stockpile volume calculatorPile shapes, loose cubic yards, estimated tons and truck loads, with a separate allowance and optional rate. Truck load calculatorHow many loads a haul really takes once the payload limit is checked alongside the box volume. Slope and grade calculatorRise and run into percent, a run-to-rise ratio and degrees, so the plans and the spec sheet agree. Pad volume calculatorAverage-depth cut or fill with a separate planning allowance.US survey foot converterLegacy survey feet, international feet and metres, with the reference-system distinction explained.Pipe invert station tableStart invert, grade and length into station-by-station target inverts, with an optional structure drop.Spring road restriction lookupWisconsin and Minnesota: state highway restriction status for a county, and who posts the county roads.

Working with a GNSS rover?

WISCORS & MnCORS guides bring together official setup resources, field checks and coordinate-reference notes for the trip back to the office.

Why the assumptions are on the page

Most quantity calculators bury their factors. You enter dimensions, a number appears, and there is no way to tell which swell factor or truck size produced it — which makes the answer impossible to check and awkward to defend.

These show every factor as an editable field and repeat it with the result. Where a figure is an illustrative starting value rather than a measurement of your material, the page says so. Where a calculation does not model your situation — a trench that changes depth, a haul under seasonal load restrictions — the page says that too.

When a calculator is not enough

A single answer is fine for a question you are about to act on and forget. It is not enough when someone asks three weeks later how a quantity was arrived at, or when a set of grade checks needs to go to the office as a record.

That is what Driftless Field does: the same arithmetic, but recorded against a named job with the benchmark, the readings, the tolerance and the assumptions kept together, and printed as a report you can hand over.

Open the field workspace