Token Calculator
Estimate token usage across popular and latest AI models.
Calculate
Tip: V3 can suggest a shorter prompt and show estimated token savings for this model.
Result
Estimated TokensiApproximate input tokens for selected model.Copy
0
Estimated RangeiLikely lower/upper bound around the estimate.Copy
0 - 0
ConfidenceiHeuristic confidence level of this estimate.Copy
%94
CharactersCopy
0
WordsCopy
0
LinesCopy
0
ProviderCopy
OpenAI
TokenizeriTokenizer family used for heuristic estimation.Copy
o200k_base
Raw JSON (technical)
{
"model": "gpt-5-mini",
"provider": "OpenAI",
"tokenizerFamily": "o200k_base",
"chars": 0,
"words": 0,
"lines": 0,
"estimatedInputTokens": 0,
"estimatedRange": {
"low": 0,
"high": 0,
"confidencePct": 94
},
"meta": {
"estimator": "model-aware-heuristic-v3",
"normalization": "trim+collapse+markdown-clean",
"segmentation": "goal|constraints|context|examples|output"
}
}Estimates only. Verify pricing on official provider pages.
How to use this tool?
Step 1
Fill in required fields and define your scenario clearly.
Step 2
Review result cards and compare key metrics.
Step 3
Copy relevant output and continue with the next tool if needed.
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