Thread Calculator app icon

Apps Like Thread Calculator for iPhone and iPad

Calculate type and tap hole diameter

Calculate measurements for various types including M, MF, UNC, and NPT. Determine tap hole sizes and bolt specifications by selecting type, nominal size, and pitch. Perform cold forming and repair calculations.

by GSR Gustav Stursberg GmbH★ 4.414 ratingsProductivityFreeData updated 2026-09-06

Thread Calculator screenshots

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How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.