Tools that show their working
Five calculators and interactive labs, one for each kind of quantization. They run entirely in your browser, store nothing on a server, and print the formula behind every result so you can check it.
LLM VRAM calculator
Weights, KV cache and overhead for any model, quant and context length — with a fit check across 20 GPUs and Macs.
Quantization playground
Quantize a signal or a weight distribution to 1–16 bits and watch the error, histogram and SQNR change live.
ADC and bit-depth calculator
LSB size, ideal SNR, ENOB from measured SINAD, oversampling gain and audio file size in one panel.
MIDI quantize and swing lab
Play a loose drum loop, then quantize it with strength and swing and hear the difference in the browser.
Energy levels calculator
Hydrogen transitions with photon wavelength and colour, plus particle-in-a-box energies.
Which tool do I need?
- Downloading a local model and wondering if it will run? Start with the VRAM calculator, then compare candidates in the formats atlas.
- Learning how quantization works or teaching it? The playground shows scale, zero-point, clipping and error on real data.
- Choosing an ADC or audio format? The ADC calculator covers LSB, SQNR, ENOB, oversampling and file sizes.
- Producing music? Hear strength and swing in the quantize lab.
- Studying physics or chemistry? Work transitions in the energy levels calculator.
Suggest the next tool
Tell us the calculation you keep doing by hand. The most-requested ideas get built first.