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Feet & inches calculator that speaks tape-measure

HammerCalc is the feet and inches calculator built for the trades — enter 12 ft 6-3/8 in the way you measure it, tap fractions off a ruler, and round to 1/16″, 1/32″ or 1/64″.

Try free for 7 days See all features

What this feet-inches calculator does

Skip decimal conversions. HammerCalc’s keypad handles feet, inches and fractions natively, and the Tape Measure widget lets you punch fractions straight off a ruler — the fastest path from measurement to answer on a construction calculator.

  • Native feet, inches and fraction arithmetic
  • Tape Measure widget for tapping fractions instead of typing them
  • Custom rounding to 1/16″, 1/32″, 1/64″ or decimal
  • One-tap convert when you also need millimeters or meters

Built as a real construction calculator — not a phone calculator skin

If you’ve ever fought the iPhone calculator with mixed feet and inches, HammerCalc is the upgrade. It’s a dedicated carpentry calculator and contractor calculator app for everyday dimensional math.

FAQ

Is HammerCalc a feet and inches calculator?

Yes. Feet, inches and fractions are native — including a Tape Measure widget for fast fraction entry.

Can it round to construction fractions?

Yes. Round results to 1/16″, 1/32″ or 1/64″ to match how you mark and cut.

Get this tool on your iPhone, iPad & Mac

Stairs, square footage, feet & inches, metric & imperial — all in HammerCalc.

Download on the App Store ← Back to home