This calculator converts milliamp-hours (mAh) to watt-hours (Wh) using voltage, which is the same battery-capacity relationship used for Ah and Wh. The page includes the formula, direct input fields, and the reverse conversion link. It is free to use without a required paid plan.

6 options🧮 Miscellaneous Calculators

Text to Binary3 options

Converting plain text into binary code is essential for understanding how computers process and store information at the most fundamental level. This converter translates letters, numbers, and symbols into their binary equivalents using standard character encodings. By providing a clean interface for rapid translation, it eliminates the need for manual calculations or memorizing complex bit patterns for every character. Students, developers, and hobbyists frequently use this utility to debug data streams, study computer science fundamentals, or create encoded messages for specific digital applications. It serves as a practical educational resource for visualizing how human-readable language transforms into machine-readable data. The process handles various character sets and ensures that the output is accurately formatted for further use in programming or technical documentation. Whether analyzing network packets or exploring the digital representation of language, users can rely on these results for consistency and precision.

3 options🔢 Number Theory & Sequences

Vigenère Cipher2 options

The Vigenère Cipher provides an interactive platform for encrypting and decrypting text using one of the most famous polyalphabetic substitution methods. By applying a keyword to shift characters across multiple alphabets, it adds a layer of complexity beyond simple substitution ciphers. Users can explore the mechanics of the algorithm through a Tabula Recta visualization, which clearly maps how plaintext and keys interact to produce ciphertext. Security enthusiasts and students of cryptography can perform deep analysis on encrypted messages using integrated tools like Kasiski examination and Index of Coincidence. These features help identify repeating patterns and key lengths, facilitating automated key recovery for educational or testing purposes. Whether for learning the history of codes or analyzing ciphertext, this resource offers a comprehensive set of tools for classical cryptanalysis.

2 options🛡️ Security

Pi Attenuator Calculator2 options

Our pi attenuator calculator is perfect if you want to build an attenuator and don't know how many ohms to use in your resistors.

2 options🧮 Miscellaneous Calculators

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Find out how to write a message in Morse code and how to translate back to plain text with our handy Morse code translator.

2 options🧮 Miscellaneous Calculators

Battery Size Calculator4 options

SparkyCalc’s battery energy and runtime calculator computes battery bank capacity, stored energy, and theoretical runtime for single batteries or series/parallel banks. It includes discharge-current-based runtime estimates and supporting formulas. The calculator is openly available online for free.

4 options🧮 Miscellaneous Calculators

RF Unit Converter

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