Processing boundary
Input is processed only in the active browser tab's memory and is not sent to a ByteQuant server.
48
AI tools
Token / Context Budget Planner
Calculates an approximate sectioned token budget for a chosen context limit and surfaces overflow risk. Model tokenizers, hidden system additions, and provider reserves can change actual usage; values are planning estimates.
✓ Free✓ No account✓ In-browser
Result
CONTEXT BUDGET Limit: 128,000 System: 3,000 History: 24,000 Sources: 50,000 User input: 4,000 Output allocation: 8,000 Safety reserve: 12,800 (10%) Status: Within budget Remaining: 26,200 The actual tokenizer, provider system additions, and tool calls can consume more tokens.
Operation completed
Within budget
Persistent storage
Input and output are not stored. The optional usage counter keeps only tool identity and count, never content.
Verification
Output comes from disclosed rules or browser APIs and needs independent review before high-impact use.
A result in three steps
- 01
Enter the model context limit and expected output allocation.
- 02
Add estimates for system, history, sources, and user input.
- 03
Review remaining reserve and verify with the actual tokenizer.
When is this tool useful?
- ✓ RAG context allocation
- ✓ Long-conversation budgeting
- ✓ Output share and safety reserve
Important limitation
Automated output is a preliminary assessment. Do not use it alone for legal, financial, medical, or security-critical decisions.
LEARN THE WORKFLOW
Guides for this tool
Token and Context Budgets: A Practical System-Prompt Checklist
Turn system instructions, history, sources, user input, output, and safety margin into a measurable context plan.
Read guide →ABOUT THIS TOOL
Frequently asked questions
Does this tool send input to a server?+
No. Processing runs in this browser tab. Data leaves the page only when you choose to copy or download the result.
Is the result definitive?+
The tool produces consistent output from disclosed rules and browser APIs, but context, data quality, and method limitations can affect it. Verify high-impact decisions.
Is input saved?+
No. Tool input is not persisted. With consent, only tool identity and usage count may be kept on this device for personal shortcuts.