4 calculators in this category
- Amdahl's Law Speedup CalculatorAmdahl (1967) and Gustafson (1988)Enter the fraction of your program that can run in parallel and the number of processors you plan to throw at it, and this…
- Big-O Operations & Runtime Estimator CalculatorAsymptotic (Bachmann–Landau) notationBig-O tells you how work grows with input size; it does not tell you how long anything takes. This calculator closes that gap…
- Cache Hit Ratio & Average Memory Access Time CalculatorAMAT model, Hennessy & PattersonA cache is worth exactly what it saves on the accesses that miss it, weighted by how often that happens. Average memory access…
- Base64 Encoded Size CalculatorRFC 4648, RFC 2045Base64 turns three bytes into four printable characters, so it costs exactly one third more than the binary it encodes — plus…
Which one do you need?
- Amdahl's Law Speedup Calculator
- Calculate parallel speedup, efficiency and the hard ceiling from Amdahl's law, plus Gustafson scaled speedup and the core count a target speedup needs.
- Big-O Operations & Runtime Estimator Calculator
- Estimate the operation count and wall-clock runtime for a complexity class at a given input size, the largest n that fits a time limit, and the cost of doubling n.
- Cache Hit Ratio & Average Memory Access Time Calculator
- Compute hit and miss ratios, average memory access time for one or two cache levels, the load offloaded from the backing store, and the speedup a cache delivers.
- Base64 Encoded Size Calculator
- Compute exact base64, base64url, base32 and hex encoded lengths, the padding characters added, the percentage overhead, MIME line breaks and data URI length.