Measure, estimate and plan projects: square footage, stairs, concrete, lumber, tire sizes and VIN checks.
Decode a 17-character VIN: maker, country, model year and check digit.
Add up rooms of any shape in feet or meters and price your flooring.
Diameter, sidewall and revolutions for any tire, plus a two-size comparison.
Risers, treads, stringer length and angle, checked against building code limits.
Board feet and lumber cost for a whole cut list, in imperial or metric.
Cubic yards and meters for concrete, gravel, mulch or soil, plus bag counts.
Estimate materials for floors, stairs, decks and concrete, compare tire sizes, and decode a vehicle identification number. Each calculator shows its formula and the building code or industry rule it follows, so you can check it against your local requirements.