Updated · Methodology: named formula library
LLM Token Counter
Estimate the number of tokens in a text for LLM API usage and cost planning.
At 100 requests/day, your estimated LLM API cost is $31/month.
Why This Calculation Matters
The LLM Token Counter makes AI spend predictable. Usage-based pricing can scale fast, model the math upfront so you're budgeting with reality, not surprise bills.
How to Use This Calculator
- Enter your values in the input fields, each one has a label and help text explaining what to type.
- Results appear instantly as you type; there's no "calculate" button to press.
- Change any input to compare scenarios side by side.
All math happens in your browser. Nothing you type is sent to a server, saved, or shared.
Cost Optimization Tips
- Use cheaper models for simple or bulk tasks, and premium models only when quality matters.
- Implement prompt caching where supported to cut repeat-prefix costs.
- Batch requests when your use case allows.
- Shorten prompts, tokens you don't send are tokens you don't pay for.
Token Counting
Tokens are the units that language models process. English text averages about 1 token per 4 characters or 1.3 tokens per word.
Quick Estimates
- 100 words ≈ 130 tokens
- 1 page of text ≈ 400-500 tokens
- 1 A4 page ≈ 500-700 tokens
- Average email ≈ 100-200 tokens
- Short blog post ≈ 500-1,000 tokens
Worked Example
1M Claude Sonnet input tokens
- tokens
- 1000000
- rate
- 3
- Result
- $3.00
1M × $3/MTok = $3.00.
When to Use This Calculator
- Budget LLM spend before shipping a feature or deploying at scale.
- Compare providers on a cost-per-request basis instead of sticker price.
- Estimate inference cost for capacity planning and pricing.
Limitations & Common Mistakes
- Provider pricing changes frequently, check the provider's official pricing page for current rates.
- Token counts are estimated from text length; exact counts require the provider's tokenizer.
- Usage-based costs compound with retries, context caching, and multi-turn conversations.
Frequently Asked Questions
How does the LLM Token Counter work?
Enter your input tokens (default: 1000) and any other inputs; the calculator instantly applies its llm token counter formula and shows the result with details. All math runs in your browser; nothing is sent to a server.
Is the LLM Token Counter accurate for ai tools decisions?
It uses standard, documented formulas that match published references. For high-stakes ai tools decisions, verify the result against an authoritative source (industry calculator, professional advisor, or government data). The calculator is a planning estimate, not a substitute for professional judgment.
What inputs does the LLM Token Counter require?
5 inputs: Input Tokens, Output Tokens, Requests Per Day, Input $ / 1M tokens, Output $ / 1M tokens. Each has a sensible default; replace with your own values to get a result tailored to your situation.
Can I bookmark or share the LLM Token Counter?
Yes — the URL is stable: https://www.calcintel.com/calculator/llm-token-counter. Inputs reset to defaults on each visit (no input is stored), so screenshot or copy the result if you want to preserve a specific scenario.
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Source: BLS Consumer Price Index, 2026.