Access comprehensive drill bit size charts with ease. Quickly find conversions between US Number/Letter, Fractional-Inch, and Metric sizes. A handy reference for professionals and students alike.
Drill Bit Converter by Dohmann Engineering Services






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| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | $0.99 | — | No | No | Jul 2026 | ||
| 2 | $0.99 | 4.5★ (22) | No | No | Aug 2026 | ||
| 3 | $2.99 | 4.1★ (19) | No | No | Aug 2026 | ||
| 4 | Free | 5.0★ (1) | No | No | Oct 2026 | ||
| 5 | Free | 5.0★ (2) | No | No | May 2026 | ||
| 6 | Free | 5.0★ (2) | No | No | May 2026 | ||
| 7 | Free | 4.9★ (897) | No | No | Oct 2026 | ||
| 8 | Free | 4.8★ (27K) | No | Yes | Oct 2026 |










Access comprehensive drill bit size charts with ease. Quickly find conversions between US Number/Letter, Fractional-Inch, and Metric sizes. A handy reference for professionals and students alike.






This utility app helps you determine the correct drill bit size for threaded holes. It supports both inch and metric threads, calculates close and tight fit hole sizes, and provides tables for standard drill bit sizes and pipe information.