Convert lengths between modern and historical units, including ancient civilizations. Offers smart formatting, custom precision, and a favorites list for frequently used conversions. Supports iPhone, iPad, and Mac.






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Whether you want more options like Cubic Meter Calculator Pro or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.






Convert lengths between modern and historical units, including ancient civilizations. Offers smart formatting, custom precision, and a favorites list for frequently used conversions. Supports iPhone, iPad, and Mac.





Quickly estimate concrete needs for various projects like slabs, footings, and walls. Calculate volume, material cost, and bag quantities for ready-mix or premixed options. Supports metric and imperial units, works offline, and saves estimates.



Easily calculate the volume of various shapes in cubic yards for landscaping materials, construction, or waste disposal. Get an estimated cost for your materials based on price per unit.