HeyTensor

HeyTensor, built by Michael Lip as part of his Zovo ML tools brand, is a browser-based calculator that computes output tensor shapes for neural network layers, letting users input layer parameters and immediately see resulting dimensions to debug architecture issues before writing code. It offers a single-layer shape calculator supporting 14 layer types including Conv2d, Linear, and LSTM, a Chain Mode for tracing shapes through multi-layer networks with real-time mismatch detection, and a Paste Error mode that parses PyTorch RuntimeErrors and suggests fixes. HeyTensor includes architecture presets such as LeNet-5, ResNet blocks, and Transformer encoders, and works identically with both PyTorch and TensorFlow formulas. The tool runs entirely in the browser with no server communication, tracking, or cookies, and its source code is open source on GitHub. Pricing is free, with no cost to use.